[FFmpeg-trac] #9556(undetermined:new): Demux Error with AVC 422 Intra - Not supported ?
FFmpeg
trac at avcodec.org
Sat Dec 18 14:03:15 EET 2021
#9556: Demux Error with AVC 422 Intra - Not supported ?
-------------------------------------+-------------------------------------
Reporter: Nicolas | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: AVC 422 | Blocked By:
Intra |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Nicolas):
Thanks for the feedback !
> Please note that mxf is using Annex B AVC bitsream, so if you go from
mp4 that technically does not support Annex B you must insert -bsf
h264_mp4toannexb. See this patch by mkver:
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AM7PR03MB66600B2742E305A97C277D898F929@AM7PR03MB6660.eurprd03.prod.outlook.com/
Thanks for the info, however here I'm just going from MXF to MXF !
[[BR]]
> which is colour_range_Original and is the same as Color range: Min: 0,
Max: 1023, Chroma range: 1023 same for Format_Profile_Original which now
says High 4:2:2 Intra at L5.1.
>
> But that is correct: for new file Color range - 1024 (0x400) (8 bytes)
which is correct because you count from 1 there
abd58a4192e4c5ea721b22365c211d8fa874f3d2 (I suppose 0 is reserved for
something?).
I'm not sure to follow, are you saying that going from "High 4:2:2
Intra at L5.1" to "High 4:2:2 @L5.1" + Color_Range change is normal then ?
[[BR]]
> so no Profile Constraint.
Is it another bug ? Or could it be linked to the color shift we can see in
Premiere Pro ?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9556#comment:4>
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