Movie Size

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  • audi
    Member
    Member
    • Sep 2002
    • 88

    #46
    how do you do that

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    • khp
      The Other
      • Nov 2001
      • 2161

      #47
      By loading the avs file created by GKnot into vitrualdub, and encode using quality based encoding @ 100 %. And check the size of the result. The compressablility numbers stated by GKnot reflect the size of the video at the selected bitrate compared to the maximum quality. Of course the compressability check in GKnot cheats a bit because it only encodes parts of the movie, and estimates how well it will compress at other resolutions than then one used when running the compressability check.
      Donate your idle CPU time for something usefull.
      http://folding.stanford.edu/

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      • audi
        Member
        Member
        • Sep 2002
        • 88

        #48
        ok i ripped vanilla sky again . Please Take a look at these files and maybe you will be able to tell why i got a file size of 1.18 gigs instead of 1400 megs
        Attached Files

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        • khp
          The Other
          • Nov 2001
          • 2161

          #49
          Looks like you are still telling GKnot to reserve 181203 KB for external files. It should set to 0 if you want GKnot to use the full 1400 MB. See attachment.

          Qualitywise I think you are at about 85-90% of the maximum filesize (but it's hard to know exactly). So this time Divx is encoding at the bitrate GKnot told it to use. But if you release the 181203 KB, it might hit maximum quality again, if you use the same resolution.
          Attached Files
          Last edited by khp; 12 Nov 2002, 04:02 PM.
          Donate your idle CPU time for something usefull.
          http://folding.stanford.edu/

          Comment

          • audi
            Member
            Member
            • Sep 2002
            • 88

            #50
            what do i look at in those files i sent you to see if im at maximum quality ?

            Comment

            • khp
              The Other
              • Nov 2001
              • 2161

              #51
              The average quantizer is the key.

              Maximum quality equals a quantizer of 2.

              Higher quantizers equal lower quality.

              With your latest encoding you had an average quantizer of 2.33.

              As a reference point, I think an average quantizer of 4, would mean that you are at about 50% of the maximum filesize.
              Donate your idle CPU time for something usefull.
              http://folding.stanford.edu/

              Comment

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