[gst-devel] fractions and aspect ratios

[Thomas Vander Stichele]

On Wed, 2004-07-14 at 16:06, Ronald Bultje wrote:
> Hi,
> 
> On Wed, 14 Jul 2004, Benjamin Otte wrote:
> > Why is the information necessary from where you came?
> > Also, what are other systems/libraries (theora, X, ...) using for pixel
> > aspect ratios?
> 
> mjpegtools uses ratios, ffmpeg uses floats.

I checked to make sure.

8 months ago:

http://www1.mplayerhq.hu/cgi-bin/cvsweb.cgi/ffmpeg/libavcodec/avcodec.h.diff?r1=1.235&r2=1.236&cvsroot=FFMpeg

where AVRational is a struct containing two ints, num and den.

This is already in our gst-ffmpeg as well, btw.

So, that leaves us with zero known codec projects that use floats.  All
of them use a fraction.

Thomas


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