[FFmpeg-devel] 4:2:0 DV25 file wrongly identified as 4:1:1

Maksym Veremeyenko verem
Wed Sep 22 12:46:45 CEST 2010

Niobos ???????(??):
>> If it helps, here's a some 4:1:1 DV from the Internet Archive:
>> http://www.archive.org/download/TripTheLightPromo2/DanceTest2.mov ('dvc ')
>> http://www.archive.org/download/ThroughtTheFirstBoca/ThroughFirstBoca.avi ('dvsd', DVCPRO)
>> http://www.archive.org/download/Timothy_Leary_Archives_237_.dv/237_.dv (DVCPRO)
> I ran this ffmpeg command on all three:
> ffmpeg -i "$f" -vcodec libx264 -vpre hq -b 1000k -acodec copy "$f.mkv"
> ffmpeg tells me the streams are "yuv411p", and from what I can tell
> visually, they are correctly transcoded (and thus detected). I.e.
> they're not scrambled as would have happened if they would be wrongly
> detected as 4:2:0.

File *ThroughFirstBoca.avi* as you mention has fourcc 'dvsd' that is for 
PAL 4:2:0 dv content...

Maksym Veremeyenko

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