divx 5 and tearing

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  • Karcsi
    Junior Member
    Junior Member
    • Feb 2002
    • 12

    divx 5 and tearing

    I've been capturing from video tape using virtualdub and the divx5 codec. The only thing I have changed from default is the encoding bit rate, which is set to 375.

    Everytime, I get tearing within the picture on playback. What is weird is that it happens only within the left hand portion of the picture, and only around the edges of red or black areas. Any idea why this is, and/or how to fix it?

    TIA
  • Karcsi
    Junior Member
    Junior Member
    • Feb 2002
    • 12

    #2
    scrub that! It only seems to happen when I try and play something I've captured while virtualdub is still open. If I shut it down, and then play the file I have just captured, there are no problems.

    Comment

    • techno
      Digital Video Master
      Digital Video Master
      • Nov 2001
      • 1309

      #3
      But why do u want to capture and compress at the same time?????????????????? Bad quality.

      Try to use these settings:

      NO RECOMPRESSION
      CD QUALITY uncompressed audio
      320*24
      YU12
      25/30fps

      This is the best settings, then convert to DIVX

      Techno

      Comment

      • khp
        The Other
        • Nov 2001
        • 2161

        #4
        Originally posted by techno
        NO RECOMPRESSION
        CD QUALITY uncompressed audio
        320*24
        YU12
        25/30fps
        Now that sure must suck, 320*24 thats just silly (OK maybe it was a typo )

        Here how I do it in vdub

        Video compression: huffyuv lossless compression.
        704*576, yuv2, 25fps
        Audio uncompressed 16bit stereo 44.1khz
        Donate your idle CPU time for something usefull.
        http://folding.stanford.edu/

        Comment

        • techno
          Digital Video Master
          Digital Video Master
          • Nov 2001
          • 1309

          #5
          m8, no it doesn't suck! I tried it works like a charm!

          Then u can resize it if u wish in virtualdub!

          I have captured over 60 videos using the SAME settings and it is NEAR DVD quality!

          Everyone has their own opinions!

          Techno

          Comment

          • techno
            Digital Video Master
            Digital Video Master
            • Nov 2001
            • 1309

            #6
            woops, it was suppose to be 320*240! not 320*24! Sorry!

            Techno

            Comment

            • khp
              The Other
              • Nov 2001
              • 2161

              #7
              I think TV-capture at 320*240 with NEAR DVD quality is a contradiction in terms.
              Donate your idle CPU time for something usefull.
              http://folding.stanford.edu/

              Comment

              • techno
                Digital Video Master
                Digital Video Master
                • Nov 2001
                • 1309

                #8
                I know what u mean m8, this is what to do:

                capture using the settings I gave.

                Use virtual dub to resize to any res u want

                Then use any filters if u wish to

                Then it will give NEAR DVD quality, depending on the source.

                Or

                use TMPGENC to resize to any res (like 720*576) and encode in MPEG2/1

                I have done it just now and it works!

                I know what u r saying but it works for me, try it!

                Techno

                Comment

                • khp
                  The Other
                  • Nov 2001
                  • 2161

                  #9
                  Yikes!!! upsizeing, that definetly a big no no in my book.

                  It will never give you more details, only blur the picture, and because you are encoding at a higher res you will be wasting bits, that would have been much better used at the source resolution.

                  You should never raise the res of any video before encoding, much better to use the bicubic resize DS filter for playback.
                  Donate your idle CPU time for something usefull.
                  http://folding.stanford.edu/

                  Comment

                  • techno
                    Digital Video Master
                    Digital Video Master
                    • Nov 2001
                    • 1309

                    #10
                    Nope, it doesn't! Try it.

                    I have done it again, especially for you, and it does not produce more bad quality, it makes it better!

                    Even though, use NO RECOMPRESSION, it does not lose quality.

                    Techno

                    Comment

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