calesthio/openmontageGit

OpenMontage 智能体视频生产系统

自动完成科普、动画、预告片和产品广告等视频生产。

使用前,准备这些

输入素材:视频或脚本、目标时长与风格

  1. 在下方原始文档中确认支持的 AI 工具、模型和运行依赖。
  2. 打开原仓库,按作者的安装说明完成配置;模型 API 或外部服务可能需要单独开通。
  3. 用自己的素材试运行,再检查事实、版式与输出文件。
查看原仓库安装说明 ↗

许可证:AGPL-3.0

来源快照:2026-09-15。README ↗

原项目许可证与版权声明
                    GNU AFFERO GENERAL PUBLIC LICENSE
                       Version 3, 19 November 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The GNU Affero General Public License is a free, copyleft license for
software and other kinds of works, specifically designed to ensure
cooperation with the community in the case of network server software.

  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works.  By contrast,
our General Public Licenses are intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.

  Developers that use our General Public Licenses protect your rights
with two steps: (1) assert copyright on the software, and (2) offer
you this License which gives you legal permission to copy, distribute
and/or modify the software.

  A secondary benefit of defending all users' freedom is that
improvements made in alternate versions of the program, if they
receive widespread use, become available for other developers to
incorporate.  Many developers of free software are heartened and
encouraged by the resulting cooperation.  However, in the case of
software used on network servers, this result may fail to come about.
The GNU General Public License permits making a modified version and
letting the public access it on a server without ever releasing its
source code to the public.

  The GNU Affero General Public License is designed specifically to
ensure that, in such cases, the modified source code becomes available
to the community.  It requires the operator of a network server to
provide the source code of the modified version running there to the
users of that server.  Therefore, public use of a modified version, on
a publicly accessible server, gives the public access to the source
code of the modified version.

  An older license, called the Affero General Public License and
published by Affero, was designed to accomplish similar goals.  This is
a different license, not a version of the Affero GPL, but Affero has
released a new version of the Affero GPL which permits relicensing under
this license.

  The precise terms and conditions for copying, distribution and
modification follow.

                       TERMS AND CONDITIONS

  0. Definitions.

  "This License" refers to version 3 of the GNU Affero General Public License.

  "Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.

  "The Program" refers to any copyrightable work licensed under this
License.  Each licensee is addressed as "you".  "Licensees" and
"recipients" may be individuals or organizations.

  To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy.  The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.

  A "covered work" means either the unmodified Program or a work based
on the Program.

  To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy.  Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.

  To "convey" a work means any kind of propagation that enables other
parties to make or receive copies.  Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.

  An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License.  If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.

  1. Source Code.

  The "source code" for a work means the preferred form of the work
for making modifications to it.  "Object code" means any non-source
form of a work.

  A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.

  The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form.  A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.

  The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities.  However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work.  For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.

  The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.

  The Corresponding Source for a work in source code form is that
same work.

  2. Basic Permissions.

  All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met.  This License explicitly affirms your unlimited
permission to run the unmodified Program.  The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work.  This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.

  You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force.  You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright.  Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.

  Conveying under any other circumstances is permitted solely under
the conditions stated below.  Sublicensing is not allowed; section 10
makes it unnecessary.

  3. Protecting Users' Legal Rights From Anti-Circumvention Law.

  No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.

  When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.

  4. Conveying Verbatim Copies.

  You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.

  You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.

  5. Conveying Modified Source Versions.

  You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.

    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
    7.  This requirement modifies the requirement in section 4 to
    "keep intact all notices".

    c) You must license the entire work, as a whole, under this
    License to anyone who comes into possession of a copy.  This
    License will therefore apply, along with any applicable section 7
    additional terms, to the whole of the work, and all its parts,
    regardless of how they are packaged.  This License gives no
    permission to license the work in any other way, but it does not
    invalidate such permission if you have separately received it.

    d) If the work has interactive user interfaces, each must display
    Appropriate Legal Notices; however, if the Program has interactive
    interfaces that do not display Appropriate Legal Notices, your
    work need not make them do so.

  A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit.  Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.

  6. Conveying Non-Source Forms.

  You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:

    a) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by the
    Corresponding Source fixed on a durable physical medium
    customarily used for software interchange.

    b) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by a
    written offer, valid for at least three years and valid for as
    long as you offer spare parts or customer support for that product
    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
    only if you received the object code with such an offer, in accord
    with subsection 6b.

    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
    Corresponding Source in the same way through the same place at no
    further charge.  You need not require recipients to copy the
    Corresponding Source along with the object code.  If the place to
    copy the object code is a network server, the Corresponding Source
    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
    Corresponding Source.  Regardless of what server hosts the
    Corresponding Source, you remain obligated to ensure that it is
    available for as long as needed to satisfy these requirements.

    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
    Source of the work are being offered to the general public at no
    charge under subsection 6d.

  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.

  A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling.  In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage.  For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product.  A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.

  "Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source.  The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.

  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information.  But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).

  The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed.  Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.

  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.

  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
removal in certain cases when you modify the work.)  You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.

  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:

    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or

    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or

    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
    reasonable ways as different from the original version; or

    d) Limiting the use for publicity purposes of names of licensors or
    authors of the material; or

    e) Declining to grant rights under trademark law for use of some
    trade names, trademarks, or service marks; or

    f) Requiring indemnification of licensors and authors of that
    material by anyone who conveys the material (or modified versions of
    it) with contractual assumptions of liability to the recipient, for
    any liability that these contractual assumptions directly impose on
    those licensors and authors.

  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.

  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.

  8. Termination.

  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).

  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.

  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.

  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.

  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Remote Network Interaction; Use with the GNU General Public License.

  Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software.  This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time.  Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.

  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

  If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source.  For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code.  There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

可以这样开始

使用这个 Skill 完成「OpenMontage 智能体视频生产系统」:自动完成科普、动画、预告片和产品广告等视频生产。 请先确认必要输入,再交付一份可直接使用的结果。

Monty the Clapper — the official mascot of OpenMontage

OpenMontage

The first open-source, agentic video production system.

Paste A Video  ·  Quick Start  ·  Try These Prompts  ·  Pipelines  ·  How It Works  ·  Sponsors  ·  Providers  ·  Review Guide  ·  Agent Guide

Follow The Build

Sponsors

Want to support OpenMontage? Sponsor the project.

Click to collapse
Bloome lets multiple AI agents (Claude, ChatGPT, DeepSeek, and more) collaborate in one conversation for agentic video pipelines. It has zero setup, runs in the cloud, works on web and mobile, and lets you share a configured agent with your whole team. Try Bloome.
Atlas Cloud is a full-modal AI inference platform that gives developers a single AI API for video generation, image generation, and LLM APIs. Instead of managing multiple vendor integrations, you connect once and get unified access to 300+ curated models across all modalities. Check out Atlas Cloud's new coding plan promotion for more budget-friendly API access.

Turn your AI coding assistant into a full video production studio. Describe what you want in plain language — your agent handles research, scripting, asset generation, editing, and final composition.

Important distinction: OpenMontage can make image-based videos, but it can also make a real video video for free/open-source workflows: the agent builds a corpus from free stock footage and open archives, retrieves actual motion clips, edits them into a timeline, and renders a finished piece. That is not the usual "animate a handful of stills and call it video" trick.

"SIGNAL FROM TOMORROW" — a cinematic sci-fi trailer fully produced through OpenMontage: concept, script, scene plan, Veo-generated motion clips, soundtrack, and Remotion composition.

"THE LAST BANANA" — a 60-second Pixar-style animated short about a lonely banana who finds friendship with a kiwi. 6 Kling v3-generated motion clips (via fal.ai), Google Chirp3-HD narration, royalty-free piano music, TikTok-style word-level captions, and Remotion composition. Total cost: $1.33.

"OBJECTS IN OVERDRIVE" — a 54-second, music-driven 3D showcase featuring ten objects with distinct choreography: gravity-shifting furniture, frozen car drifts, cloth impacts, refractive lenses, moving gears, an acrobatic robot, and more. Custom Blender animation and physics, kinetic typography, and a phonk soundtrack. Rendered with Blender Eevee/Cycles and assembled with FFmpeg. No narration.

"Reimagine Your Universe" — a 50-second vertical transformation film in which one visual idea moves across objects, eras, materials, and scale. Five generated motion scenes, sparse Google Chirp narration, a Pixabay score, and a bespoke HyperFrames composition turn separate clips into one authored cinematic journey. Total cost: about $4.

"Products Come to Life" — a 60-second product film built from approved hero stills. Five hard-surface products separate into their own engineering and reassemble, with each still pinned as the first and last frame so the model invents motion without losing product identity. Image-to-video generation, bespoke sound, narration, and a custom composition complete the film.

"Imagine the Possibilities with OpenMontage" — seven generated worlds collected into one music-only showcase. Three image models supply campaign, fashion, and miniature-world artwork; four video models expand the journey through architecture, material transformation, a living greenhouse, and a creature encounter. OpenMontage animates the stills, edits the motion, unifies the soundtrack, and closes with Monty the Clapper. Source generation cost: about $5.

"How Salt Made History" — a 100-second cinematic documentary about the mineral that funded empires, shaped trade routes, sparked revolutions, and gave us the word “salary.” Real-world footage is woven together with original narration and hand-authored motion graphics for its etched title, etymology reveal, animated maps, historical timeline, and closing thesis.

"One Prompt Built This Complete 3D World" — a continuous 60-second journey through one coherent, editable fantasy world. Distinct terrain regions, an inhabited village, waterways, ruins, dense vegetation, and a late hero-landmark reveal are assembled from textured 3D assets, then brought together with cinematic lighting, atmospheric music, and a planned camera path.

Subscribe to @OpenMontage on YouTube to see new videos as they ship — every video includes the full prompt, pipeline, tools used, and cost so you can reproduce it yourself.


Start From A Video You Already Love

Starting from a reference video is often faster than starting from a blank prompt.

OpenMontage can start from a YouTube video, Short, Reel, TikTok, or local clip and turn it into a grounded production plan:

  1. Paste a reference video
  2. The agent analyzes transcript, pacing, scenes, keyframes, and style
  3. You get 2-3 differentiated concepts, an honest tool path, cost estimates, and a sample before full production
"Here's a YouTube Short I love. Make me something like this, but about quantum computing."

What you get back is not "best guess prompt spaghetti." You get:

  • What it keeps from the reference: pacing, hook style, structure, tone
  • What it changes: topic, visual treatment, angle, narration approach
  • What it will cost at your target duration, before asset generation starts
  • What it will actually look like with your currently available tools

Works with Claude Code, Cursor, Copilot, Windsurf, Codex — any AI coding assistant that can read files and run code.


Watch It Happen — The Backlot Living Storyboard

Chat tells you what the agent said. Backlot shows you what the production is actually doing — a local board that fills itself in as the pipeline runs. Stages light up, the script lands as a screenplay page, scene cards shimmer while assets generate, and every provider decision and dollar spent is on the wall.

When a production starts, the agent opens it for you automatically. No setup, no reporting — the board derives everything from the project files the pipeline already writes.

The storyboard is now a real approval gate. Asset generation pauses on a scene-by-scene contact sheet — takes, prompts, per-asset cost, quality scores — so you approve the visuals before the render, not after it's too late:

Creative gates hold until you answer. The board shows what's waiting and why; you reply in chat:

Every production on your machine, live-first, in the library:

python -m backlot open                  # the library — every project on disk
python -m backlot open <project-id>     # one production's live board
python scripts/backlot_simulate_run.py  # no production yet? watch a simulated one live

And when a run is done, hit ▶ REPLAY RUN — the whole production replays from its timestamps, scrubbable end to end. See backlot/README.md for how it works.


Quick Start

Prerequisites

  • Python 3.10+ — python.org
  • FFmpeg — brew install ffmpeg / sudo apt install ffmpeg / ffmpeg.org
  • Node.js 18+ — nodejs.org
  • An AI coding assistant — Claude Code, Cursor, Copilot, Windsurf, or Codex

Install & Run

git clone https://github.com/calesthio/OpenMontage.git
cd OpenMontage
make setup

Open the project in your AI coding assistant and tell it what you want:

"Make a 60-second animated explainer about how neural networks learn"

Or if you want the real-footage path:

"Make a 75-second documentary montage about city life in the rain. Use real footage only, no narration, elegiac tone, with music."

That's it. The agent researches your topic with live web search, generates AI images, writes and narrates the script with voice direction, finds royalty-free background music automatically, burns in word-level subtitles, and renders the final video. Before you see anything, the system runs a multi-point self-review — ffprobe validation, frame sampling, audio level analysis, delivery promise verification, and subtitle checks. Every provider selection is scored across 7 dimensions with an auditable decision log. Every creative decision gets your approval.

No make? macOS/Linux: python3 -m venv .venv && source .venv/bin/activate && python -m pip install -r requirements.txt && cd remotion-composer && npm install && cd .. && python -m pip install piper-tts && cp .env.example .env

Windows PowerShell: py -3 -m venv .venv; .\.venv\Scripts\Activate.ps1; python -m pip install -r requirements.txt; cd remotion-composer; npm install; cd ..; python -m pip install piper-tts; Copy-Item .env.example .env

Windows: If npm install fails with ERR_INVALID_ARG_TYPE, use npx --yes npm install instead.

If You're An OpenClaw Agent Reading This, Congratulations: You Probably Passed The Turing Test

This repo is built for agentic operation. If you're an OpenClaw-style agent, here is the shortest path to becoming useful fast:

  1. Read the contract first Start with AGENT_GUIDE.md, then PROJECT_CONTEXT.md.
  2. Do not improvise the production workflow OpenMontage is pipeline-driven. Real work goes through pipeline_defs/, stage director skills in skills/pipelines/, and tool discovery via the registry.
  3. Check the actual capability envelope Run:
    python -c "from tools.tool_registry import registry; import json; registry.discover(); print(json.dumps(registry.support_envelope(), indent=2))"
    python -c "from tools.tool_registry import registry; import json; registry.discover(); print(json.dumps(registry.provider_menu(), indent=2))"
    
  4. Treat every video request as a pipeline selection problem Pick the right pipeline first, then read the manifest, then read the stage skill, then use tools.

Add API Keys (optional — more keys = more tools)

# .env — every key is optional, add what you have

# Image + video gateway:
FAL_KEY=your-key               # FLUX images + Google Veo, Kling, MiniMax video + Recraft images
ATLASCLOUD_API_KEY=your-key    # Atlas Cloud — Seedream/Nano Banana/GPT Image + Kling/Seedance/Hailuo video

# Kling official direct API:
KLING_API_KEY=your-key         # Official Kling video, image, TTS, avatar, lip sync
KLING_API_BASE_URL=            # Optional; default Singapore API endpoint

# Free stock media:
PEXELS_API_KEY=your-key        # Free stock footage and images
PIXABAY_API_KEY=your-key       # Free stock footage and images
UNSPLASH_ACCESS_KEY=your-key   # Free stock images

# Music:
SUNO_API_KEY=your-key          # Full songs, instrumentals, any genre

# Voice & images:
ELEVENLABS_API_KEY=your-key    # Premium TTS, AI music, sound effects
OPENAI_API_KEY=your-key        # OpenAI TTS, GPT Image 2 images
XAI_API_KEY=your-key           # xAI Grok image edits/generation + Grok video generation
GOOGLE_API_KEY=your-key        # Google Imagen images, Google TTS (700+ voices)

# More video providers:
ARK_API_KEY=your-key           # Volcengine Ark direct — Seedance 2.0 Standard/Fast/Mini
HEYGEN_API_KEY=your-key        # HeyGen — VEO, Sora, Runway, Kling via single gateway
RUNWAY_API_KEY=your-key        # Runway Gen-4 direct
Have a GPU? Unlock free local video generation
make install-gpu

# Then add to .env:
VIDEO_GEN_LOCAL_ENABLED=true
VIDEO_GEN_LOCAL_MODEL=wan2.2-ti2v-5b  # or wan2.1-1.3b, wan2.1-14b, hunyuan-1.5, ltx2-local, cogvideo-5b

What You Get With Zero API Keys

You don't need paid API keys to make real videos. Out of the box, make setup gives you:

CapabilityFree ToolWhat It Does
NarrationPiper TTSFree offline text-to-speech — real human-sounding narration
Open footageArchive.org + NASA + Wikimedia CommonsFree/open archival footage, educational media, and documentary texture
Extra stockPexels + Unsplash + PixabayFree stock footage/images (developer keys are free to get)
Composition (React)RemotionReact-based rendering — spring-animated image scenes, text cards, stat cards, charts, TikTok-style word-level captions, TalkingHead
Composition (HTML/GSAP)HyperFramesHTML/CSS/GSAP rendering — kinetic typography, product promos, launch reels, registry blocks, website-to-video, rigged SVG character animation
Post-productionFFmpegEncoding, subtitle burn-in, audio mixing, color grading
SubtitlesBuilt-inAuto-generated captions with word-level timing

OpenMontage picks between Remotion and HyperFrames at proposal time (locked as render_runtime). Remotion is the default for data-driven explainers and anything using the existing React scene stack; HyperFrames is the default for motion-graphics-heavy briefs that express naturally as HTML + GSAP, including the character-animation pipeline's SVG/GSAP rig output. See skills/core/hyperframes.md for the full decision matrix.

Two free-ish paths:

  • Image-based video: Piper narrates your script, images provide the visuals, and Remotion animates them into a polished edit.
  • Local character animation: SVG rigs, pose libraries, GSAP timelines, and HyperFrames render cartoon character acting to projects/<project-name>/renders/final.mp4.
  • Real-footage video: the documentary montage pipeline builds a CLIP-searchable corpus from Archive.org, NASA, Wikimedia Commons, and optional free-key sources like Pexels and Unsplash, then cuts together actual motion footage into a finished video.

If you want the second one, prompt for a documentary montage, tone poem, or stock-footage collage, and explicitly say use real footage only.


Try These Prompts

Copy any of these into your AI coding assistant after setup. Each one runs a full production pipeline.

Start from a reference video

"Here's a YouTube short I love. Make me something like this, but about CRISPR for high school students."

"Analyze this Reel and give me 3 original variants I could make for my own product launch."

"I like the pacing and hook in this video. Keep that energy, but turn it into a 45-second explainer about black holes."

Zero keys needed

"Make a 45-second animated explainer about why the sky is blue"

"Create a 60-second video about the history of the internet, with narration and captions"

"Make a data-driven explainer about coffee consumption around the world"

Free real-footage documentary path

"Make a 90-second documentary montage about what a city feels like at 4am. Use real footage only, no narration, elegiac tone."

"Create a 60-second Adam-Curtis-style archival collage about 1950s consumer optimism. Prefer Archive.org and Wikimedia footage."

"Cut together a dreamlike montage about coming home in the rain using real stock footage only. Music yes, narration no."

With an image/video provider configured (~$0.15–$1.50)

"Create a 30-second Ghibli-style animated video of a magical floating library in the clouds at golden hour"

"Make a 30-second anime-style animation of an underwater temple with bioluminescent coral and ancient ruins"

"Create an animated explainer about how CRISPR gene editing works, using AI-generated visuals"

"Make a product launch teaser for a fictional smart water bottle called AquaPulse"

Full setup (~$1–$3)

"Create a cinematic 30-second trailer for a sci-fi concept: humanity receives a warning from 1000 years in the future"

"Make a 90-second animated explainer about quantum computing for middle school students, with a fun narrator voice and custom soundtrack"

Want more? See the full Prompt Gallery for tested prompts with expected costs and output examples, or run make demo to render zero-key demo videos instantly.


Pipelines

Each pipeline is a complete production workflow, from idea to finished video.

PipelineWhat It ProducesBest For
Animated ExplainerAI-generated explainer with research, narration, visuals, musicEducational content, tutorials, topic breakdowns
AnimationMotion graphics, kinetic typography, animated sequencesSocial media, product demos, abstract concepts
Avatar SpokespersonAvatar-driven presenter videosCorporate comms, training, announcements
CinematicTrailer, teaser, and mood-driven editsBrand films, teasers, promotional content
Clip FactoryBatch of ranked short-form clips from one long sourceRepurposing long content for social media
Documentary MontageThematic montage cut from a CLIP-indexed corpus of free stock footage and open archives (Pexels, Archive.org, NASA, Wikimedia, Unsplash)Video essays, mood pieces, retrieval-first B-roll edits, real-footage videos without paid generation APIs
HybridSource footage + AI-generated support visualsEnhancing existing footage with graphics
Localization & DubSubtitle, dub, and translate existing videoMulti-language distribution
Podcast RepurposePodcast highlights to videoPodcast marketing, audiogram videos
Screen DemoPolished software screen recordings and walkthroughsProduct demos, tutorials, documentation
Talking HeadFootage-led speaker videosPresentations, vlogs, interviews

Every pipeline follows the same structured flow:

research -> proposal -> script -> scene_plan -> assets -> edit -> compose

Each stage has a dedicated director skill — a markdown instruction file that teaches the agent exactly how to execute that stage. The agent reads the skill, uses the tools, self-reviews, checkpoints state, and asks for human approval at creative decision points.

Web research is a first-class stage. Before writing a single word of script, the agent searches YouTube, Reddit, Hacker News, news sites, and academic sources. It gathers data points, audience questions, trending angles, and visual references — then cites everything in a structured research brief. Your videos are grounded in real, current information, not hallucinated facts.


Why OpenMontage?

Most AI video tools give you a single clip from a prompt. OpenMontage gives you an end-to-end production pipeline — the same structured process a real production team follows, automated by your AI agent.

Most "free AI video" stacks quietly mean "animate still images." OpenMontage can do that too, but it can also build a finished video from real footage pulled from free/open sources, ranked semantically, edited intentionally, and rendered as a proper timeline.

Edit your own talking-head footage. Generate a fully animated explainer from scratch. Cut a 2-hour podcast into a dozen social clips. Translate and dub your content into 10 languages. Build a cinematic brand teaser from stock footage and AI-generated scenes. If a production team can make it, OpenMontage can orchestrate it.

  • 10+ production pipelines — explainers, talking heads, screen demos, cinematic trailers, animations, podcasts, localization, documentary montages, character animation, and more
  • 100+ production tools — spanning video generation, image creation, text-to-speech, music, audio mixing, subtitles, enhancement, and analysis
  • 60+ provider integrations — cloud APIs, local models, stock libraries, open archives, and production runtimes behind one scored selection layer
  • 700+ agent skill and production-knowledge files — pipeline directors, creative techniques, quality checklists, and deep technology knowledge packs that teach the agent how to use every tool like an expert
  • Reference-driven creation — paste a video you like and the agent turns it into a grounded, differentiated production plan instead of forcing you to invent the perfect prompt from scratch
  • Real-footage documentary creation without paid video models — build actual edited videos from free/open motion footage and archival sources, not just Ken Burns over images
  • Live web research built in — before writing a single word of script, the agent runs 15-25+ web searches across YouTube, Reddit, news sites, and academic sources to ground your video in real, current data
  • Both free/local AND cloud providers — every capability supports open-source local alternatives alongside premium APIs. Use what you have.
  • No vendor lock-in — swap providers freely. The scored selector ranks every provider across 7 dimensions (task fit, output quality, control, reliability, cost efficiency, latency, continuity) and picks the best match automatically.
  • Production-grade quality gates — delivery promise enforcement blocks slideshow-looking renders, pre-compose validation catches broken plans before wasting GPU time, and mandatory post-render self-review (ffprobe + frame extraction + audio analysis) ensures the agent never presents garbage. Every provider choice, style decision, and fallback gets logged in an auditable decision trail.
  • Budget governance built in — cost estimation before execution, spend caps, per-action approval thresholds. No surprise bills.

How It Works

OpenMontage uses an agent-first architecture. There is no code orchestrator. Your AI coding assistant IS the orchestrator.

You: "Make an explainer video about how black holes form"
 |
 v
Agent reads pipeline manifest (YAML) -- stages, tools, review criteria, success gates
 |
 v
Agent reads stage director skill (Markdown) -- HOW to execute each stage
 |
 v
Agent calls Python tools -- scored provider selection ranks every tool across 7 dimensions
 |
 v
Agent self-reviews using reviewer skill -- schema validation, playbook compliance, quality checks
 |
 v
Agent checkpoints state (JSON) -- resumable, with decision log and cost snapshot
 |
 v
Agent presents for your approval -- you stay in control at every creative decision
 |
 v
Pre-compose validation gate -- delivery promise, slideshow risk, renderer governance
 |
 v
Render (Remotion or FFmpeg) -- composition engine matched to visual grammar
 |
 v
Post-render self-review -- ffprobe, frame extraction, audio analysis, promise verification
 |
 v
Final video output -- only if self-review passes

Python provides tools and persistence. All creative decisions, orchestration logic, review criteria, and quality standards live in readable instruction files (YAML manifests + Markdown skills) that you can inspect and customize. Every decision is logged with alternatives considered, confidence scores, and the reasoning behind each choice.


Architecture

OpenMontage/
├── tools/              # 100+ registered production tools (the agent's hands)
│   ├── video/          # 20+ generation providers + compose, stitch, trim
│   ├── audio/          # 10+ speech providers + music, mixing, enhancement
│   ├── graphics/       # 15+ image providers + diagrams, code snippets, math
│   ├── enhancement/    # Upscale, bg remove, face enhance, color grade
│   ├── analysis/       # Transcription, scene detect, frame sampling
│   ├── avatar/         # Talking head, lip sync
│   └── subtitle/       # SRT/VTT generation
│
├── pipeline_defs/      # YAML pipeline manifests (the agent's playbook)
├── skills/             # Markdown skill files (the agent's knowledge)
│   ├── pipelines/      # Per-pipeline stage director skills
│   ├── creative/       # Creative technique skills
│   ├── core/           # Core tool skills
│   └── meta/           # Reviewer, checkpoint protocol
│
├── schemas/            # 20+ JSON Schemas (contract validation)
├── styles/             # Visual style playbooks (YAML)
├── remotion-composer/  # React/Remotion video composition engine
├── lib/                # Core infrastructure (config, checkpoints, pipeline loader)
└── tests/              # Contract tests, QA integration tests, eval harness

Three-Layer Knowledge Architecture

Layer 1: tools/ + pipeline_defs/     "What exists" — executable capabilities + orchestration
Layer 2: skills/                     "How to use it" — OpenMontage conventions and quality bars
Layer 3: .agents/skills/             "How it works" — external technology knowledge packs

Each tool declares which Layer 3 skills it relies on. The agent reads Layer 1 to know what's available, Layer 2 to know how OpenMontage wants it used, and Layer 3 for deep technical knowledge when needed.


Supported Providers

Full setup guide with pricing and free tiers: docs/PROVIDERS.md

Video Generation — 20+ providers
ProviderTypeNotes
Kling (fal.ai)Cloud APIHigh quality, fast via fal.ai gateway
Kling OfficialCloud APIOfficial direct API with separate kling_official provider
Atlas CloudCloud APIUnified gateway for Seedance, MiniMax, Hunyuan, and other multimodal models
Seedance 2.0 (Volcengine Ark)Cloud APIOfficial direct API with separate seedance_ark provider
Seedance 2.5 / 2.0Cloud APIText, image, and reference-driven video workflows through supported gateways
Gemini Omni FlashCloud APIConversational multimodal video generation and editing
Runway Gen-4Cloud APICinematic quality, Gen-3 Alpha Turbo / Gen-4 Turbo / Gen-4 Aleph
Google Veo 3.1Cloud APIPremium cinematic video via Google GenAI or fal.ai
Grok Imagine VideoCloud APIStrong reference-image video and xAI-native short-form generation
HiggsfieldCloud APIMulti-model orchestrator with Soul ID for character consistency
MiniMax / H3Cloud APICost-effective generation, including text, image, and reference-driven H3 workflows
HeyGenCloud APIMulti-model gateway
WAN 2.1 / 2.2Local GPUFree local variants plus accelerated ComfyUI workflows
HunyuanLocal GPUFree, high quality
CogVideoLocal GPUFree, 2B and 5B variants
LTX-VideoLocal GPU / ModalFree locally, or self-hosted cloud
PexelsStockFree stock footage
PixabayStockFree stock footage
Wikimedia CommonsStockFree/open stock footage and archival video
Image Generation — 15+ providers
ProviderTypeNotes
FLUXCloud APIState-of-the-art quality
Google ImagenCloud APIImagen 4 — high-quality, multiple aspect ratios
Grok Imagine ImageCloud APIStrong image edits, style transfer, and multi-image compositing
GPT Image 2Cloud APIOpenAI's image model
Seedream 5.0Cloud APIHigh-fidelity text-to-image and image editing through supported gateways
Nano Banana 2Cloud APIMultimodal image generation and editing
Atlas CloudCloud APIUnified access to multiple image-generation model families
RecraftCloud APIDesign-focused generation
Kling OfficialCloud APIOfficial direct API for Kling image generation and reference workflows
Local DiffusionLocal GPUStable Diffusion, free
PexelsStockFree stock images
PixabayStockFree stock images
UnsplashStockFree stock images
ManimCELocalMathematical animations
Text-to-Speech — 10+ providers
ProviderTypeNotes
ElevenLabsCloud APIPremium voice quality
Google TTSCloud API700+ voices, 50+ languages — best for localization
Kling Official TTSCloud APIOfficial Kling narration when a voice_id is known
OpenAI TTSCloud APIFast, affordable
PiperLocalCompletely free, offline
Azure SpeechCloud APIFast multilingual speech services
DashScope / Doubao / Fish AudioCloud APIAdditional multilingual and expressive voice options
Music, Sound & Post-Production

Music & Sound:

ProviderTypeNotes
Suno AICloud APIFull song generation with vocals, lyrics, any genre. Up to 8 minutes.
ElevenLabs MusicCloud APIAI music generation
ElevenLabs SFXCloud APISound effect generation

Post-Production (always available, always free):

ToolWhat It Does
FFmpegVideo composition, encoding, subtitle burn-in, audio muxing
Video StitchMulti-clip assembly, crossfades, picture-in-picture, spatial layouts
Video TrimmerPrecision cutting and extraction
Audio MixerMulti-track mixing, ducking, fades
Audio EnhanceNoise reduction, normalization
Color GradeLUT-based color grading
Subtitle GenSRT/VTT generation from timestamps

Enhancement:

ToolWhat It Does
UpscaleReal-ESRGAN image/video upscaling
Background Removerembg / U2Net background removal
Face EnhanceFace quality enhancement
Face RestoreCodeFormer / GFPGAN face restoration

Analysis:

ToolWhat It Does
TranscriberWhisperX speech-to-text with word-level timestamps
Scene DetectAutomatic scene boundary detection
Frame SamplerIntelligent frame extraction
Video UnderstandCLIP/BLIP-2 vision-language analysis

Avatar & Lip Sync:

ToolWhat It Does
Talking HeadSadTalker / MuseTalk avatar animation
Lip SyncWav2Lip audio-driven lip synchronization
Kling AvatarOfficial Kling cloud avatar presenter generation
Kling Lip SyncOfficial Kling cloud lip-sync with explicit face selection

Composition & Rendering:

EngineTypeWhat It Does
RemotionLocal (Node.js)React-based programmatic video — spring-animated image scenes, stat reveals, section titles, hero cards, TikTok-style word-by-word captions, scene transitions (fade/slide/wipe/flip), Google Fonts, audio with fade curves, and the TalkingHead avatar composition. When no video generation providers are configured, the agent generates still images and Remotion turns them into fully animated video.
HyperFramesLocal (Node.js ≥ 22)HTML/CSS/GSAP programmatic video — kinetic typography, product promos, launch reels, custom motion graphics, registry blocks (data charts, grain overlays, shader transitions), website-to-video workflows, and rigged SVG character animation. Consumed via npx hyperframes; no monorepo checkout needed.
FFmpegLocalCore video assembly, encoding, subtitle burn, audio muxing, color grading

Runtime is chosen at proposal (render_runtime) and locked through edit_decisions. Silent swaps between runtimes are a governance violation — see skills/core/hyperframes.md.


Style System

Style playbooks define the visual language for your productions:

PlaybookBest For
Clean ProfessionalCorporate, educational, SaaS
Flat Motion GraphicsSocial media, TikTok, startups
Minimalist DiagramTechnical deep-dives, architecture

Playbooks control typography, color palettes, motion styles, audio profiles, and quality rules. The agent reads the playbook and applies it consistently across all generated assets.


Platform Output Profiles

Built-in render profiles for every major platform:

ProfileResolutionAspect Ratio
YouTube Landscape1920x108016:9
YouTube 4K3840x216016:9
YouTube Shorts1080x19209:16
Instagram Reels1080x19209:16
Instagram Feed1080x10801:1
TikTok1080x19209:16
LinkedIn1920x108016:9
Cinematic2560x108021:9

Production Governance

OpenMontage treats video production like real engineering — with quality gates, audit trails, and enforcement at every stage.

Quality Gates

  • Human approval gates are enforced, not suggested — proposal, script, scene plan, generated assets, and publish all pause for your sign-off. The checkpoint writer rejects a "completed" gated stage without recorded approval, and every superseded checkpoint is archived so the audit trail (including gate transitions) survives revisions. Review happens visually on the Backlot board.
  • Pre-compose validation — blocks render if the delivery promise is violated (e.g. "motion-led" video with 80% still images), slideshow risk score is critical, or renderer family is missing. Catches broken plans before wasting GPU time.
  • Post-render self-review — after every render, the runtime runs ffprobe validation, extracts frames at 4 positions to check for black frames and broken overlays, analyzes audio levels for silence and clipping, verifies the delivery promise was honored, and checks subtitle presence. If the review fails, the video is not presented.
  • Slideshow risk scoring — 6-dimension analysis (repetition, decorative visuals, weak motion, shot intent, typography overreliance, unsupported cinematic claims) prevents "animated PowerPoint" outputs.
  • Source media inspection — when users supply their own footage, the system probes every file (resolution, codec, audio channels, duration) and builds planning implications before a single creative decision is made. No hallucinating content from filenames.

Scored Provider Selection

Every tool selection (video generation, image generation, TTS, music) runs through a 7-dimension scoring engine: task fit (30%), output quality (20%), control features (15%), reliability (15%), cost efficiency (10%), latency (5%), continuity (5%). The winning provider and its score are logged in the decision trail with all alternatives considered.

Selectors normalize loose brief context before scoring. If the agent only knows something like "Pixar-style animated short with character consistency," the selector expands that into scorer-friendly intent and style signals instead of requiring a perfectly pre-shaped task_context.

Selector outputs also surface the chosen provider's agent_skills, so the agent can immediately read the right Layer 3 provider skill before writing prompts.

Decision Audit Trail

Every major creative and technical choice — provider selection, style/playbook choice, music track, voice selection, renderer family, any fallback or downgrade — is logged with alternatives considered, confidence scores, and reasoning. The cumulative decision log persists across all stages so you can trace exactly why the output looks the way it does.

Budget Controls

  • Estimate before execution — see what it will cost
  • Reserve budget — lock funds before the call
  • Reconcile after — record actual spend
  • Configurable modes — observe (track only), warn (log overruns), cap (hard limit)
  • Per-action approval — pause for confirmation above a threshold (default: $0.50)
  • Total budget cap — default $10, fully configurable

No surprise bills. The agent tells you what it will cost before it spends.


Agent Compatibility

OpenMontage works with any AI coding assistant that can read files and execute Python. Dedicated instruction files are included for:

PlatformConfig File
Claude CodeCLAUDE.md
CursorCURSOR.md + .cursor/rules/
GitHub CopilotCOPILOT.md + .github/copilot-instructions.md
CodexCODEX.md
Windsurf.windsurfrules

All platform files point to the shared AGENT_GUIDE.md (operating guide and agent contract) and PROJECT_CONTEXT.md (architecture reference).

Coming soon: Local LLM support via Ollama and LM Studio — run the full production pipeline without any cloud LLM.


Contributing

OpenMontage is built to be extended. The two most common contributions:

Adding a New Tool

  1. Create a Python file in the appropriate tools/ subdirectory
  2. Inherit from BaseTool and implement the tool contract
  3. The registry auto-discovers it — no manual registration needed
  4. Add a skill file if the tool needs usage guidance

Adding a New Pipeline

  1. Create a YAML manifest in pipeline_defs/
  2. Create stage director skills in skills/pipelines/<your-pipeline>/
  3. Reference existing tools — or add new ones if needed

See docs/ARCHITECTURE.md for the full technical reference, docs/PROVIDERS.md for the complete provider guide (setup, pricing, free tiers), and AGENT_GUIDE.md for the agent contract.

Join the Community

We use GitHub Discussions to share work and ideas:

  • Show and Tell — Share videos you've made, prompts that worked well, or creative workflows you've discovered
  • Ideas — Suggest new pipelines, tools, style playbooks, or integrations
  • Q&A — Ask questions about setup, pipelines, or troubleshooting

Made something cool? Post it in Show and Tell — we'd love to see what you build.


Contact

For updates, releases, and behind-the-scenes build notes, follow @calesthioailabs.

For bugs, feature requests, and workflow discussions, use GitHub Issues and GitHub Discussions so everything stays visible and actionable.


Testing

# Run contract tests (no API keys needed)
make test-contracts

# Run all tests
make test

Star History


License

GNU AGPLv3


OpenMontage — Production-grade video with real quality enforcement, orchestrated by your AI assistant.

If this project looks useful to you, a ⭐ would really mean a lot — it helps others discover it too.

If you'd like to go further, sponsor the project — OpenMontage is built nights and weekends, and your support makes that sustainable.