- Qt 6.9
- Qt Multimedia
- FFmpeg, version n7.1
- Qt 6.9.0 Reference Documentation

# FFmpeg, version n7.1

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles, and related metadata.

The FFmpeg media backend uses the FFmpeg framework. FFmpeg is licensed under LGPLv2.1 or later versions of the licenses. Note that, while FFmpeg also features some optional components available under GPL or LGPLv3, the binaries that ship with Qt in the online installer do not contain these components. Build scripts for the prebuilt FFmpeg binaries can be found in the Qt git repository. See the FFmpeg licensing page for further details.

The sources can be found in qtmultimedia/src/3rdparty/ffmpeg.

Project Homepage, upstream version: n7.1

     Copyright (c) 2000-2023 the FFmpeg developers

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     1. Definitions
     --------------

     1.1. "Contributor"
         means each individual or legal entity that creates, contributes to
         the creation of, or owns Covered Software.

     1.2. "Contributor Version"
         means the combination of the Contributions of others (if any) used
         by a Contributor and that particular Contributor's Contribution.

     1.3. "Contribution"
         means Covered Software of a particular Contributor.

     1.4. "Covered Software"
         means Source Code Form to which the initial Contributor has attached
         the notice in Exhibit A, the Executable Form of such Source Code
         Form, and Modifications of such Source Code Form, in each case
         including portions thereof.

     1.5. "Incompatible With Secondary Licenses"
         means

         (a) that the initial Contributor has attached the notice described
             in Exhibit B to the Covered Software; or

         (b) that the Covered Software was made available under the terms of
             version 1.1 or earlier of the License, but not also under the
             terms of a Secondary License.

     1.6. "Executable Form"
         means any form of the work other than Source Code Form.

     1.7. "Larger Work"
         means a work that combines Covered Software with other material, in
         a separate file or files, that is not Covered Software.

     1.8. "License"
         means this document.

     1.9. "Licensable"
         means having the right to grant, to the maximum extent possible,
         whether at the time of the initial grant or subsequently, any and
         all of the rights conveyed by this License.

     1.10. "Modifications"
         means any of the following:

         (a) any file in Source Code Form that results from an addition to,
             deletion from, or modification of the contents of Covered
             Software; or

         (b) any new file in Source Code Form that contains any Covered
             Software.

     1.11. "Patent Claims" of a Contributor
         means any patent claim(s), including without limitation, method,
         process, and apparatus claims, in any patent Licensable by such
         Contributor that would be infringed, but for the grant of the
         License, by the making, using, selling, offering for sale, having
         made, import, or transfer of either its Contributions or its
         Contributor Version.

     1.12. "Secondary License"
         means either the GNU General Public License, Version 2.0, the GNU
         Lesser General Public License, Version 2.1, the GNU Affero General
         Public License, Version 3.0, or any later versions of those
         licenses.

     1.13. "Source Code Form"
         means the form of the work preferred for making modifications.

     1.14. "You" (or "Your")
         means an individual or a legal entity exercising rights under this
         License. For legal entities, "You" includes any entity that
         controls, is controlled by, or is under common control with You. For
         purposes of this definition, "control" means (a) the power, direct
         or indirect, to cause the direction or management of such entity,
         whether by contract or otherwise, or (b) ownership of more than
         fifty percent (50%) of the outstanding shares or beneficial
         ownership of such entity.

     2. License Grants and Conditions
     --------------------------------

     2.1. Grants

     Each Contributor hereby grants You a world-wide, royalty-free,
     non-exclusive license:

     (a) under intellectual property rights (other than patent or trademark)
         Licensable by such Contributor to use, reproduce, make available,
         modify, display, perform, distribute, and otherwise exploit its
         Contributions, either on an unmodified basis, with Modifications, or
         as part of a Larger Work; and

     (b) under Patent Claims of such Contributor to make, use, sell, offer
         for sale, have made, import, and otherwise transfer either its
         Contributions or its Contributor Version.

     2.2. Effective Date

     The licenses granted in Section 2.1 with respect to any Contribution
     become effective for each Contribution on the date the Contributor first
     distributes such Contribution.

     2.3. Limitations on Grant Scope

     The licenses granted in this Section 2 are the only rights granted under
     this License. No additional rights or licenses will be implied from the
     distribution or licensing of Covered Software under this License.
     Notwithstanding Section 2.1(b) above, no patent license is granted by a
     Contributor:

     (a) for any code that a Contributor has removed from Covered Software;
         or

     (b) for infringements caused by: (i) Your and any other third party's
         modifications of Covered Software, or (ii) the combination of its
         Contributions with other software (except as part of its Contributor
         Version); or

     (c) under Patent Claims infringed by Covered Software in the absence of
         its Contributions.

     This License does not grant any rights in the trademarks, service marks,
     or logos of any Contributor (except as may be necessary to comply with
     the notice requirements in Section 3.4).

     2.4. Subsequent Licenses

     No Contributor makes additional grants as a result of Your choice to
     distribute the Covered Software under a subsequent version of this
     License (see Section 10.2) or under the terms of a Secondary License (if
     permitted under the terms of Section 3.3).

     2.5. Representation

     Each Contributor represents that the Contributor believes its
     Contributions are its original creation(s) or it has sufficient rights
     to grant the rights to its Contributions conveyed by this License.

     2.6. Fair Use

     This License is not intended to limit any rights You have under
     applicable copyright doctrines of fair use, fair dealing, or other
     equivalents.

     2.7. Conditions

     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
     in Section 2.1.

     3. Responsibilities
     -------------------

     3.1. Distribution of Source Form

     All distribution of Covered Software in Source Code Form, including any
     Modifications that You create or to which You contribute, must be under
     the terms of this License. You must inform recipients that the Source
     Code Form of the Covered Software is governed by the terms of this
     License, and how they can obtain a copy of this License. You may not
     attempt to alter or restrict the recipients' rights in the Source Code
     Form.

     3.2. Distribution of Executable Form

     If You distribute Covered Software in Executable Form then:

     (a) such Covered Software must also be made available in Source Code
         Form, as described in Section 3.1, and You must inform recipients of
         the Executable Form how they can obtain a copy of such Source Code
         Form by reasonable means in a timely manner, at a charge no more
         than the cost of distribution to the recipient; and

     (b) You may distribute such Executable Form under the terms of this
         License, or sublicense it under different terms, provided that the
         license for the Executable Form does not attempt to limit or alter
         the recipients' rights in the Source Code Form under this License.

     3.3. Distribution of a Larger Work

     You may create and distribute a Larger Work under terms of Your choice,
     provided that You also comply with the requirements of this License for
     the Covered Software. If the Larger Work is a combination of Covered
     Software with a work governed by one or more Secondary Licenses, and the
     Covered Software is not Incompatible With Secondary Licenses, this
     License permits You to additionally distribute such Covered Software
     under the terms of such Secondary License(s), so that the recipient of
     the Larger Work may, at their option, further distribute the Covered
     Software under the terms of either this License or such Secondary
     License(s).

     3.4. Notices

     You may not remove or alter the substance of any license notices
     (including copyright notices, patent notices, disclaimers of warranty,
     or limitations of liability) contained within the Source Code Form of
     the Covered Software, except that You may alter any license notices to
     the extent required to remedy known factual inaccuracies.

     3.5. Application of Additional Terms

     You may choose to offer, and to charge a fee for, warranty, support,
     indemnity or liability obligations to one or more recipients of Covered
     Software. However, You may do so only on Your own behalf, and not on
     behalf of any Contributor. You must make it absolutely clear that any
     such warranty, support, indemnity, or liability obligation is offered by
     You alone, and You hereby agree to indemnify every Contributor for any
     liability incurred by such Contributor as a result of warranty, support,
     indemnity or liability terms You offer. You may include additional
     disclaimers of warranty and limitations of liability specific to any
     jurisdiction.

     4. Inability to Comply Due to Statute or Regulation
     ---------------------------------------------------

     If it is impossible for You to comply with any of the terms of this
     License with respect to some or all of the Covered Software due to
     statute, judicial order, or regulation then You must: (a) comply with
     the terms of this License to the maximum extent possible; and (b)
     describe the limitations and the code they affect. Such description must
     be placed in a text file included with all distributions of the Covered
     Software under this License. Except to the extent prohibited by statute
     or regulation, such description must be sufficiently detailed for a
     recipient of ordinary skill to be able to understand it.

     5. Termination
     --------------

     5.1. The rights granted under this License will terminate automatically
     if You fail to comply with any of its terms. However, if You become
     compliant, then the rights granted under this License from a particular
     Contributor are reinstated (a) provisionally, unless and until such
     Contributor explicitly and finally terminates Your grants, and (b) on an
     ongoing basis, if such Contributor fails to notify You of the
     non-compliance by some reasonable means prior to 60 days after You have
     come back into compliance. Moreover, Your grants from a particular
     Contributor are reinstated on an ongoing basis if such Contributor
     notifies You of the non-compliance by some reasonable means, this is the
     first time You have received notice of non-compliance with this License
     from such Contributor, and You become compliant prior to 30 days after
     Your receipt of the notice.

     5.2. If You initiate litigation against any entity by asserting a patent
     infringement claim (excluding declaratory judgment actions,
     counter-claims, and cross-claims) alleging that a Contributor Version
     directly or indirectly infringes any patent, then the rights granted to
     You by any and all Contributors for the Covered Software under Section
     2.1 of this License shall terminate.

     5.3. In the event of termination under Sections 5.1 or 5.2 above, all
     end user license agreements (excluding distributors and resellers) which
     have been validly granted by You or Your distributors under this License
     prior to termination shall survive termination.

     ************************************************************************
     *                                                                      *
     *  6. Disclaimer of Warranty                                           *
     *  -------------------------                                           *
     *                                                                      *
     *  Covered Software is provided under this License on an "as is"       *
     *  basis, without warranty of any kind, either expressed, implied, or  *
     *  statutory, including, without limitation, warranties that the       *
     *  Covered Software is free of defects, merchantable, fit for a        *
     *  particular purpose or non-infringing. The entire risk as to the     *
     *  quality and performance of the Covered Software is with You.        *
     *  Should any Covered Software prove defective in any respect, You     *
     *  (not any Contributor) assume the cost of any necessary servicing,   *
     *  repair, or correction. This disclaimer of warranty constitutes an   *
     *  essential part of this License. No use of any Covered Software is   *
     *  authorized under this License except under this disclaimer.         *
     *                                                                      *
     ************************************************************************

     ************************************************************************
     *                                                                      *
     *  7. Limitation of Liability                                          *
     *  --------------------------                                          *
     *                                                                      *
     *  Under no circumstances and under no legal theory, whether tort      *
     *  (including negligence), contract, or otherwise, shall any           *
     *  Contributor, or anyone who distributes Covered Software as          *
     *  permitted above, be liable to You for any direct, indirect,         *
     *  special, incidental, or consequential damages of any character      *
     *  including, without limitation, damages for lost profits, loss of    *
     *  goodwill, work stoppage, computer failure or malfunction, or any    *
     *  and all other commercial damages or losses, even if such party      *
     *  shall have been informed of the possibility of such damages. This   *
     *  limitation of liability shall not apply to liability for death or   *
     *  personal injury resulting from such party's negligence to the       *
     *  extent applicable law prohibits such limitation. Some               *
     *  jurisdictions do not allow the exclusion or limitation of           *
     *  incidental or consequential damages, so this exclusion and          *
     *  limitation may not apply to You.                                    *
     *                                                                      *
     ************************************************************************

     8. Litigation
     -------------

     Any litigation relating to this License may be brought only in the
     courts of a jurisdiction where the defendant maintains its principal
     place of business and such litigation shall be governed by laws of that
     jurisdiction, without reference to its conflict-of-law provisions.
     Nothing in this Section shall prevent a party's ability to bring
     cross-claims or counter-claims.

     9. Miscellaneous
     ----------------

     This License represents the complete agreement concerning the subject
     matter hereof. If any provision of this License is held to be
     unenforceable, such provision shall be reformed only to the extent
     necessary to make it enforceable. Any law or regulation which provides
     that the language of a contract shall be construed against the drafter
     shall not be used to construe this License against a Contributor.

     10. Versions of the License
     ---------------------------

     10.1. New Versions

     Mozilla Foundation is the license steward. Except as provided in Section
     10.3, no one other than the license steward has the right to modify or
     publish new versions of this License. Each version will be given a
     distinguishing version number.

     10.2. Effect of New Versions

     You may distribute the Covered Software under the terms of the version
     of the License under which You originally received the Covered Software,
     or under the terms of any subsequent version published by the license
     steward.

     10.3. Modified Versions

     If you create software not governed by this License, and you want to
     create a new license for such software, you may create and use a
     modified version of this License if you rename the license and remove
     any references to the name of the license steward (except to note that
     such modified license differs from this License).

     10.4. Distributing Source Code Form that is Incompatible With Secondary
     Licenses

     If You choose to distribute Source Code Form that is Incompatible With
     Secondary Licenses under the terms of this version of the License, the
     notice described in Exhibit B of this License must be attached.

     Exhibit A - Source Code Form License Notice
     -------------------------------------------

       This Source Code Form is subject to the terms of the Mozilla Public
       License, v. 2.0. If a copy of the MPL was not distributed with this
       file, You can obtain one at https://mozilla.org/MPL/2.0/.

     If it is not possible or desirable to put the notice in a particular
     file, then You may include the notice in a location (such as a LICENSE
     file in a relevant directory) where a recipient would be likely to look
     for such a notice.

     You may add additional accurate notices of copyright ownership.

     Exhibit B - "Incompatible With Secondary Licenses" Notice
     ---------------------------------------------------------

       This Source Code Form is "Incompatible With Secondary Licenses", as
       defined by the Mozilla Public License, v. 2.0.