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  1. #1


    Member Since
    Jun 16, 2010
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    Downsizing MKV to avi
    Hi, I have a 2.3GB mkv file I would like to downsize to around 700MB avi. I tried 35% quality to avi in MpegStreamclip but the resulting file was 6.5GB! How can I make a smaller size avi?

  2. #2


    Member Since
    Feb 25, 2009
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    2,112
    Specs:
    Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10
    First question I'd have is why are you making an AVI? Aside from it being a very old container, it's not one that would default to being supported on a Mac without additional software (ie: perian). My next question is what video resolution is the mkv? And another; what codec are you trying to use for the AVI (some codecs suck at reducing the size)?
    My Macs: Late 2013 rMBP w/ 750m, 16Gig ram; 2013 Mac Pro 6 core w/ D700, 16Gig Ram; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Linux; Apple TV (1080p version)

  3. #3

    Kevriano's Avatar
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    Not a good idea to do this, seems a little pointless, but ffmpegx will do it to a reasonable quality. It takes AGES!
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  4. #4

    mknabster's Avatar
    Member Since
    May 22, 2007
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    15in MBP 2.5GHz Core2Duo | 1.83Ghz Dual G5 PowerMac | 2.0 GHz Dual G5 PowerMac
    Quote Originally Posted by blue439 View Post
    Hi, I have a 2.3GB mkv file I would like to downsize to around 700MB avi. I tried 35% quality to avi in MpegStreamclip but the resulting file was 6.5GB! How can I make a smaller size avi?
    Try a program called Xilisoft, it's a video conversion program that was now coded for Mac. You can also use VisualHub and choose what size you want it to be. I still use AVI and MPEG because my Mac can play them, it's not a dead format in the Pc world as much.
    -Matt

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