Hi.
  I have several streams that are detected like this:
Video: mpeg2video, yuv420p, 352x576 [PAR 24:11 DAR 4:3], 1225 kb/s,
25 tbr, 90k tbn, 50 tbc

  Where the PAR value is taken from AVStream.sample_aspect_ratio field,
but SAR and PAR, AFAIK is a different things. I want to ask what data
exactly is stored in this field and how should I calculate resulting
resolution to resize to display picture correctly?

Thanks for help.

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