#11556: Encoding video with libx265 to AVI creates a broken file
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Reporter: v0lt | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
When encoding video with libx265 encoder and saving to AVI, the file has
an incorrect header. The biCompression field is zero, which corresponds to
BI_RGB (uncompressed RGB). This AVI file does not play and may cause some
players to crash.
How to reproduce:
{{{
% ffmpeg -f lavfi -i testsrc -t 30 -pix_fmt yuv420p -c:v libx265
output.avi
}}}
ffmpeg version 2025-04-23-git-25b0a8e295-full_build-www.gyan.dev Copyright
(c) 2000-2025 the FFmpeg developers
Yes I understand that saving HEVC video to AVI file is a bad idea. But
FFmpeg does not write any warnings or errors for this case.
The error can be fixed by adding the "-vtag HEVC" parameter, but I think
it should have happened automatically, as it does for the libx264 encoder.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11556>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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