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

Maksym Veremeyenko verem
Wed Sep 22 13:43:00 CEST 2010


Niobos ???????(??):
[...]
> Input #0, avi, from 'ThroughFirstBoca.avi':
>   Duration: 00:01:11.77, start: 0.000000, bitrate: 30202 kb/s
>     Stream #0.0: Video: dvvideo, yuv411p, 720x480, 29.97 tbr, 29.97 tbn,
> 29.97 tbc
>     Stream #0.1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
> 
> According to the ffmpeg output, it's 4:1:1, and has the NTSC linecount
> and NTSC framerate.
> Also decoding this stream assuming these are correct yields a
> normal-looking output.
> 
> Are you sure it's 4:2:0 PAL content?

i mean FOURCC you mentioned early (*dvsd*):

 >>>> 
http://www.archive.org/download/ThroughtTheFirstBoca/ThroughFirstBoca.avi
 >>>> ('dvsd', DVCPRO)

is for PAL 4:2:0 content

-- 
________________________________________
Maksym Veremeyenko



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