#5514: Interlaced HEVC Steam not Decoded Properly
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Reporter: jlsantiago0 | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: hevc | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Comment (by Balling):
I think that interlaced_source_flag is not intended for check here, better
check field_seq_flag for 1 as per spec ("field_seq_flag equal to 1
indicates that the CVS conveys pictures that represent fields" and
further) and that is how it is done in
https://gitlab.com/mbunkus/mkvtoolnix/-/commit/47058a6da2672944aa4544f8ecb7b9a79ba3f752#0dd3dcd183ebb1497b9a9e3522e4d11a174384a2_282_288
That will not fix #4141 of course, but that file there is not spec
compliant. It can further be fixed by checking for picture_struct and
interlaced_source_flag.
Indeed as I read the spec (and as mkver reads it), the fields (not frames!
) can be progressive in all cases, not only for frame doubling and
trippling.
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Ticket URL: <https://trac.ffmpeg.org/ticket/5514#comment:13>
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