How do I programmatically find out the width and height of the video in an mpeg-2 transport program stream file?
Edit: I am using C++, but am happy for examples in any language. Edit: Corrected question - it was probably program streams I was asking about
Check out the source code to libmpeg2, a F/OSS MPEG2 decoder. It appears that the width and height are set in the mpeg2_header_sequence() function in header.c. I'm not sure how control flows to that particular function, though. I'd suggest opening up an MPEG2 file in something using libmpeg2 (such as MPlayer) and attaching a debugger to see more closely exactly what it's doing.