Re: MPEG-1 aspect ratio constants fix

Bernhard Praschinger <[email protected]> Fri, 12 Feb 2010 16:39:54 +0100
Newsgroups gmane.comp.video.mjpeg.devel
Message-ID <[email protected]>
Hallo


Linards Ticmanis wrote:
> There seem to be two wrong values in the MPEG-1 aspect ratio constants
> used by mjpeg_play; i'm attaching a diff with these ones changed.
> 
> The majority of sources I found on-line agree on a set of values not
> completely alike to the one used in mjpeg_play. This includes the source
> of mplayer and a lot of web pages (a few have the values currently in
> the source). Unfortunately I don't have access to the original MPEG
> standard documents. If you have, could you check this?
> 
> Mathematically the values given here make more sense than the ones
> currently in the source; with these new values, 352x240 becomes 321x240
> on playback, which is much closer to 4:3 than the 313x240 you get with
> the values currently in the source.
Are you sure that these fields make it into the final mpeg ?
I have searched around and didn't find any hint about the values.

auf hoffentlich bald,

Berni the Chaos of Woodquarter

Email: [email protected]
www: http://www.lysator.liu.se/~gz/bernhard

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