Ugliness in Avi Divx Playback

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  • Totentanz
    Junior Member
    Junior Member
    • Jun 2002
    • 10

    Ugliness in Avi Divx Playback

    Heya..
    I use Dvd Decrypter 3, Xmpeg 4.5, and Divx 5.02. I also have divx 3.11 installed.
    My first movie's ripping/encoding resulted in perfect quality. However, my next movie resulted in not so much a low-res look, but more of a washed-out look. It looks like your vision when you have a little bit of water in your eyes. The "washed-outness" doesn't mush the whole picture, just in the areas surrounding color changes (like that hazy ring that sometimes appears around the moon ). Also, chunks of pixels are constantly moving on inanimate objects, such as the background or clothing of a character. This affect also appears on black areas, such as during scene changes. None of the effects worsten with fast or slow movement.
    Here are the changes from the first, perfect quality movie to the second:

    - Increased bitrate from 1500 to 2000
    - Interlaced, not progressive (I did not deinterlace; first movie
    was progressive)
    - Res is 632x356
    - In Xmpeg, under "Post Processing," the original ratio was 4:3. I changed this to 16:9 (wasn't sure if this would affect the outcome)
    - Since I'm a newb, I'm not sure if this matters, but I also ripped/encoded the subtitles from the original movie

    No white lines appear during any speed of movement, as I understand the affects of interlacing to be.

    Any suggestions?
  • Enchanter
    Old member
    • Feb 2002
    • 5417

    #2
    Res is 632x356
    Resolutions must be in factors of 16!

    Comment

    • Totentanz
      Junior Member
      Junior Member
      • Jun 2002
      • 10

      #3
      Hmm i thought i remember reading in the guides a mulitple of 4? What does that refer to?

      Comment

      • Enchanter
        Old member
        • Feb 2002
        • 5417

        #4
        Hmm i thought i remember reading in the guides a mulitple of 4?
        I have heard about it too, but I've always stuck to multiples of 16.

        What does that refer to?
        The DivX codec, for simplicity sake, cannot handle resolutions outside the factor of 16.

        Comment

        • Totentanz
          Junior Member
          Junior Member
          • Jun 2002
          • 10

          #5
          Ok, I will try encoding again, at 640x356. Are there any other settings that might have contributed to the original problem that I should edit?

          Comment

          • Totentanz
            Junior Member
            Junior Member
            • Jun 2002
            • 10

            #6
            Also, it's only the width that has to be a multiple of 16, right?
            And since I didn't see any white lines in fast movement scenes, this means I do not have to deinterlace?

            Comment

            • Enchanter
              Old member
              • Feb 2002
              • 5417

              #7
              Width and Height have to be in multiples of 16, not just one of them. If you see no annoying combing artifacts, esp. during movements, then you don't need to deinterlace the video.

              Comment

              • hippocampus
                Junior Member
                Junior Member
                • Jun 2002
                • 13

                #8
                Try to change the color depth of your desktop to 24bit.
                I just read, that DivX 5 does not support 16 bit.
                (The problem sounds like mine. I solved it like this)

                Comment

                • hippocampus
                  Junior Member
                  Junior Member
                  • Jun 2002
                  • 13

                  #9
                  sorry, I meant 32bit!
                  Does 24bit actually exist?
                  I have only 16 and 32bit.

                  Comment

                  • Enchanter
                    Old member
                    • Feb 2002
                    • 5417

                    #10
                    I've seen a few older cards (eg. ATI RagePro) that support it. The newer ones (at least for mine) don't seem to support it.

                    Comment

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