[FFmpeg-trac] #9146(undetermined:open): ATC SEI of HLG (18) should overwrite color_trc from VUI in mp4, just like in ts and mkv (was: ffmpeg gives different value of color_trc if video stream contains an atc sei for mp4 and ts file)
FFmpeg
trac at avcodec.org
Wed Jun 2 20:42:57 EEST 2021
#9146: ATC SEI of HLG (18) should overwrite color_trc from VUI in mp4, just like
in ts and mkv
-------------------------------------+-------------------------------------
Reporter: a1q123456 | Owner: (none)
Type: defect | Status: open
Priority: normal | Component:
| undetermined
Version: unspecified | Resolution:
Keywords: hevc | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by Balling):
* summary:
ffmpeg gives different value of color_trc if video stream contains an
atc sei for mp4 and ts file
=>
ATC SEI of HLG (18) should overwrite color_trc from VUI in mp4, just
like in ts and mkv
Comment:
And this was just a bug in Mediainfo!!! HAHA.
SEI_rbsp_stop_one_bit on hevc-hdr.mp4 is only printed on android, WTF.
Also, mp4 has ATC SEI.
mpv nevertheless recognizes both as HLG, so no problem there. Nice.
Also I see a problem in mkv too, but that is a common problem that
transfer_characteristics_Original is uses somehow by ffmpeg, why BTW?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9146#comment:6>
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