[FFmpeg-user] Aspect Ratio information
mike.scheutzow at alcatel-lucent.com
Wed Jun 6 15:18:47 CEST 2012
Tarun singhal wrote:
> Hi all,
> [This one is little urgent -
> Can anybody let me know what does aspect_ratio_idc means?
In h.264, it is a value which specifies the aspect ratio for a single pixel.
> I got to know from here-
> that is stands for Aspect ratio information
> but how it is calculated thats my question.?
The value can not be calculated mathematically. You look up the value in
Table E-1 in the H.264 standard.
> Is there any way to set this value from ffmpeg?
Check the x264 docs for setting sample aspect ratio (--sar) and the
ffmpeg docs for -x264opts.
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