Bug 2508235

Summary: [epel9-next] blender needs patching, or update, for ffmpeg 7 update
Product: [Fedora] Fedora EPEL Reporter: Troy Dawson <tdawson>
Component: blenderAssignee: Luya Tshimbalanga <luya_tfz>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: epel9CC: code, design-devel, epel-packagers-sig, gang65, luya_tfz, negativo17
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Last Closed: 2026-09-09 21:07:00 UTC Type: Bug
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Description Troy Dawson 2026-07-28 21:51:42 UTC
ffmpeg is being updated from version 5 to version 7 in epel9-next.
https://forge.fedoraproject.org/epel/steering/issues/370
It is expected to be updated in epel9 when RHEL 9.9 is released in November.

With ffmpeg enabled, the version of blender in epel9 (3.3.21) does not built.

Please patch and build blender in epel9-next, in the side tag epel9-next-build-side-144255

Comment 1 Luya Tshimbalanga 2026-07-31 15:36:29 UTC
Blender 3.3.21 is very old at this point. EPEL9 is stuck to python 3.9 making difficult to update to LTS release like 4.2 series.
Maybe having something like ffmpeg5 or compat-ffmpeg5 is the logical solution.

Comment 2 Troy Dawson 2026-07-31 18:16:29 UTC
I was hoping this would have been a good excuse to update, but I didn't know about the python 3.9 issue.
I'll look at doing a compat-ffmpeg5 package.

Comment 3 Bartosz 2026-08-01 07:19:01 UTC
What is an error message while building Blender 3.3.21 with ffmpeg 7?
I am wondering if we could try to fix Blender to compile with ffmpeg 7.

Comment 4 Luya Tshimbalanga 2026-08-02 05:28:05 UTC
Here is the scratch build result: https://koji.fedoraproject.org/koji/taskinfo?taskID=148494640

Highlighted lines:

/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp: In member function 'int aud::FFMPEGReader::decode(AVPacket&, aud::Buffer&)':
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:115:81: error: 'struct AVCodecContext' has no member named 'channels'
  115 |                 int data_size = av_samples_get_buffer_size(nullptr, m_codecCtx->channels, m_frame->nb_samples, m_codecCtx->sample_fmt, 1);
      |                                                                                 ^~~~~~~~
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:125:67: error: 'struct AVCodecContext' has no member named 'channels'
  125 |                         int single_size = data_size / m_codecCtx->channels / m_frame->nb_samples;
      |                                                                   ^~~~~~~~
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:126:68: error: 'struct AVCodecContext' has no member named 'channels'
  126 |                         for(int channel = 0; channel < m_codecCtx->channels; channel++)
      |                                                                    ^~~~~~~~
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:130:109: error: 'struct AVCodecContext' has no member named 'channels'
  130 |                                         std::memcpy(((data_t*)buffer.getBuffer()) + buf_pos + ((m_codecCtx->channels * i) + channel) * single_size,
      |                                                                                                             ^~~~~~~~
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp: In member function 'void aud::FFMPEGReader::init(int)':
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:210:51: error: 'struct AVCodecContext' has no member named 'channels'
  210 |         m_specs.channels = (Channels) m_codecCtx->channels;
      |                                                   ^~~~~~~~
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp: In member function 'virtual std::vector<aud::StreamInfo> aud::FFMPEGReader::queryStreams()':
/builddir/build/BUILD/blender-3.3.21/extern/audaspace/plugins/ffmpeg/FFMPEGReader.cpp:348:91: error: 'AVCodecParameters' {aka 'struct AVCodecParameters'} has no member named 'channels'
  348 |                         info.specs.channels = Channels(m_formatCtx->streams[i]->codecpar->channels);

Comment 5 Troy Dawson 2026-09-09 21:07:00 UTC
A ffmpeg5 compat package was released so this patch/update is not needed.
Closing bug.

Comment 6 Luya Tshimbalanga 2026-09-10 15:38:00 UTC
Thank you,