[x264-devel] About --sar option

Davide Bergamini davide.bergamini3 at studio.unibo.it
Mon Mar 7 13:22:47 CET 2011


Thanks you for the explanation! I think the wikipedia article about pixel
aspect raio should be updated, I suggested in its discussion page. Bye!

2011/3/7 BugMaster <BugMaster at narod.ru>

>  On Sun, 6 Mar 2011 15:39:33 +0100, Davide Bergamini wrote:
> > Hi, thanks for your work!
> > I have a couple of question/suggestion about the --sar option.
> > I think the real meaning of this option is not sar (storage aspect
> > ratio), but its par (pixel aspect ratio)
> > and it should be renamed "--input-par". (like --input-res)
> > Example: a pal dvd mpeg2 widescreen
> > sar = 5:4 (its the pixel resolution ratio 720/576)
> > dar = 16:9 (its the output ratio)
> > par = 64:45 (its the single pixel width/height ratio)
> >
> >
>
> Hi. SAR acronym is not for storage aspect ratio, but for sample aspect
> ratio. And yes sample aspect ratio has almost the same meaning as
> pixel aspect ratio, but we use sample aspect ratio because this is the
> name used in official H.264 specs.
>
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