#3087: Suspicion that valid random access point is not marked as keyframe in
AVCHD
samples from Panasonic Lumix GH1 (1080i material)
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Reporter: rmk | Owner: (none)
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: h264 bounty | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Balling):
>checked by cutting off the beginning of the file until the packet start
of such a frame and it decodes fine
How can you be sure that it decodes fine? Does it decode BITPERFECT? Then
it is not a recovery point, recovery point does not usually decode
bitperct, just very close.
>I don't know if it has anything to do with it but this material is
progressive segmented frame (i.e. progressively scanned but encoded as
field pictures).
This is just the same as soft telecine, PsF that is. Yet I think only HEVC
has such a concept reintroduced, no? Anyway, we do not support such hevc
files. Full stop. Someone recheck the avc spec.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3087#comment:11>
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