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Re: QT Pro Export Option




On May 30, 2006, at 4:43 AM, Raman Sharma wrote:

I was just wondering why is "Frame Reordering" an option and not
compulsary for everyone trying to export a QuickTime movie file using
H.264 compressor. I understand it provides better compression (or does
it ?)

Frame reordering, or B-frame insertion, is a feature of H.264's Main profile, but not Baseline. So if you have a video decoder that only supports h264 baseline, it would not be able to work with frame- reordered content. Such is the case with the video iPods. So it's important that compressionists have the "Frame Reordering" choice. You're right, frame reordering does result in better quality and smaller files, but it takes longer to encode, and is more decode intensive.


-Brad Ford
QuickTime Engineering



Just trying to understand, under what circumstances would one not want to use it ? Does it have any impact on streaming or playback time/quality ?

-Raman
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References: 
 >QT Pro Export Option (From: "Raman Sharma" <email@hidden>)



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