Apple Video Foundation (AVF) and .mpg files

Richmond richmondmathewson at
Tue Mar 26 17:17:18 EDT 2019

I suppose if you open an .mpg file as a TEXT file it should
contain standard markers as to whether it is encoded as MPEG-1 or MPEG-2.

Useful samples here:


On 26.03.19 22:32, Paul Dupuis via use-livecode wrote:
> Livecode 9.x.x uses Apple Video Foundation (AVF) for the LC Player 
> object under OSX.
> AVF supports MPEG-1 video but not MPEG-2 video.
> Both MPEG-1 and MPEG-2 use the .mpg file extenstion.
> Question for any media geniuses on this list: Is there a way in 
> LiveCode to tell a MPEG-1 .mpg file from a MPEG-2.mpg file?
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