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  1. Hi All,

    See attachments of two video files I have downloaded.

    Image
    [Attachment 55332 - Click to enlarge]
    Image
    [Attachment 55333 - Click to enlarge]


    Can someone please break it down to me what would be causing the big difference in file size between these 2? As far as I can see they are both 720. However one of them is almost 3 times as big as the other, despite being of shorter duration. Can someone break this down for me very simply please.

    Thanks,
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  2. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Mathematically
    filesize = bitrate x running time

    In practice this means, for typical consumer lossy video,
    the final size can have a big latitude depending on the settings chosen
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  3. Member Cornucopia's Avatar
    Join Date
    Oct 2001
    Location
    Deep in the Heart of Texas
    Search PM
    The 1st file is ~2Mbps, the 2nd file is ~8Mbps.


    Scott
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  4. Member
    Join Date
    Mar 2011
    Location
    Nova Scotia, Canada
    Search Comp PM
    And unless the larger file was messed up by whooever encoded it it should look a LOT better. I don't really think it's possible to get high quality 720p video in a <1Gb file using AVC. HEVC, yes.
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  5. 2Mbps is quite typical for compressed H264 internet video @720p.

    The 2nd video is simply less compressed than the first.
    Quote Quote  



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