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etcetera25

Q: Pixelation of video after sent to Compressor

I have been noticing an issue with my HD video after it is sent to my Compressor software (Compressor 3.5.3).  I have HD video shot from a Panasonic AG-HMC 150P camera at 1080/60i.  I bring it into Final Cut Pro 7.0 through Log and Transfer at a vid rate of 29.97, 1920 x 1080, Apple ProRes 422, 17.0 MB/sec.  The video is saved to an external hard drive RAID which has plenty of space.  The video looks just great in Final Cut Pro while editing, and in the Finder as well, but then after I send it to Compressor at either the Fastest Encode setting or Best Quality setting (normally this happens to longer videos at the 120 and 150 minute length) I notice that randomly there is a weird pixelating that seems to occur mostly when the camera was moving around or zooming.  At least that's when it's the most noticeable, but I also see it happen when the camera is still on a tripod too.  This pixelated section only last several seconds to a minute and then the video is fine again.  I've tried to export the video out of FCP in sections, tried to export the video as a Quick Time movie, then compress the video again, but no luck. After these attempts, sometimes the same section still is pixelated, other times another section is pixelated and the original spot is fine.   Any suggestions would be very helpful, thanks!  

iMac (21.5-inch, Late 2013), OS X Mavericks (10.9)

Posted on Sep 24, 2014 1:46 PM

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Q: Pixelation of video after sent to Compressor

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  • by Russ H,

    Russ H Russ H Sep 25, 2014 5:30 PM in response to etcetera25
    Level 7 (21,885 points)
    Quicktime
    Sep 25, 2014 5:30 PM in response to etcetera25

    My guess is you're seeing interlacing, which will be most noticeable on a computer screen during sections of the content where there  is motion. Computers cannot display interlaced material well.

     

    If you're outputting for TV playback, play it on your set to see how it looks.


    If you're outputting for computer play *say the Web), you'll need to de-interlace.

     

    Good luck.

     

    Russ