Apple Video Foundation (AVF) and .mpg files

JB sundown at
Tue Mar 26 23:15:39 EDT 2019

On OS X 10.11 you can use the shell command with afinfo

JB:desktop JB$ afinfo /Users/JB/Desktop/myFile.mp3
File:           /Users/JB/Desktop/myFile.mp3
File type ID:   MPG3
Num Tracks:     1
Data format:     2 ch,  44100 Hz, '.mp3' (0x00000000) 0 bits/channel, 0 bytes/packet, 1152 frames/packet, 0 byte
                no channel layout.
estimated duration: 244.166500 sec
audio bytes: 5859996
audio packets: 9347
bit rate: 192000 bits per second
packet size upper bound: 1052
maximum packet size: 627
audio data file offset: 39692

The above info was returned from a mp3 file using the terminal.


> On Mar 26, 2019, at 1:32 PM, Paul Dupuis via use-livecode <use-livecode at> 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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