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  1. #1

    Member Since
    Aug 30, 2009
    Question video taking up to much memory
    I have a canon hf10 and has been recording on the highest setting, my camera has 16 GB internal memory and I can record appx 2h with the highest setting.
    I been transferring movies from the camcorder to imovie 09 and everything seems fine. The problem is that when I look in finder to see how much space the movies take up it says 90 GB and I have maybe 1,5 hours of movie. How is this possible??

  2. #2

    Member Since
    Feb 25, 2009
    Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10
    That is normal.

    The camera is recording in AVCHD format, which is a highly compressed format. That format is not editable by iMovie (or FCE or FCP) and needs to be converted into a format that is easier to edit. iMovie (and FCE) convert the video into a format called Apple Intermediate Codec (AIC), which causes a file to be between 60 and 70 gig per hour.

    AIC reduces the workload on a CPU from decompressing the video footage making editing a much more enjoyable job even on lower end machines.
    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)

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