Bitrate Question

Discussion in 'Apple TV and Home Theater' started by KettyKrueger, Feb 19, 2008.

  1. macrumors 6502


    Feb 17, 2007
    Quick question, should I increase bitrate along side with movie length?

    Fr example, 2500kbps seems reasons for a movie of 1.5hrs (agree?). Should I increase the bitrate to say 3000kbps for a 2hr movie?

  2. macrumors regular

    Nov 2, 2006
    The bit RATE is not dependent upon the overall length. The bit rate used to encode is a measure of the amount of data used for each second of video. Therefore a 1.5 hour movie at 2.5mbps will have the same apparent quality as a 2 hour movie at 3 mbps.

    Bumping the bit rate up to 3 mbps will increase the apparent quality of both movies...
  3. macrumors 68000

    Jan 26, 2006
    Whitehouse, OH
    But the perceived quality increase may/may not be worth the extra space used. That's a judgment call.

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