• Compression Techniques

  Compression question

  Posted by Scott Gaskin on July 6, 2014 at 4:58 pm

  Hi,

  I am trying to compress a quicktime video with Quicktime Pro. I need the video to be no larger than 22-23mb but still retain the quality. is this possible? The original file is around 1GB. The video is 3 mins long. I need to embed it into a PDF to email out but the one I have done doesn’t look great. I used the default export for web (iPhone) size via quicktime pro but like I say quality is lacking.

  Any suggestions?

  Thanks in advance

  Scott

  Craig Seeman replied 11 years, 10 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Craig Seeman

  July 6, 2014 at 5:19 pm

  File size is data rate times duration.
  You know the size you want and you know the duration, solve for data rate.
  Quality will also depend on frame size (bit per pixel) and duration.
  H.264 is the codec you’d use. Apple’s though has been one of the least efficient.

  Compressor 4 supports High Profile CABAC which is nearly as good as X264 (which is best).
  You’d have to use HandBrake for that.

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