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Activity Forums Compression Techniques Quick aspect ratio question need advice of what I am doing wrong

  • Quick aspect ratio question need advice of what I am doing wrong

    Posted by Jonathan Young on March 4, 2013 at 1:01 pm

    I have a client who wants 16:9 1290X720 and 16:9 720X480 both videos need to be compressed to mpg4 from a 1920X1080 video. When I compress the 480 video I am using 853X480 with a 16:9 anamorphic NTSC setting (which should make 720X480), however when I do that setting the video is compressed looking more strecthed compared to my 1280X720 mpg4 video.
    Here is how it looks

    I am using Apple Compressor

    Mark Spano replied 13 years, 2 months ago 2 Members · 1 Reply
  • 1 Reply
  • Mark Spano

    March 4, 2013 at 7:36 pm

    You’re doubling up on the stretch. 720×480 with 16×9 PAR = 853×480 in square pixel land. So encode for either 853×480 square pixels, or 720×480 with 16×9 pixel aspect. What you write above is encoding 853×480 with 16×9 pixel aspect – this is doubling the stretch.

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