CBR vs. VBR / Interlace vs. De-interlace

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  • cplevel42
    Member
    Member
    • Jun 2002
    • 75

    CBR vs. VBR / Interlace vs. De-interlace

    I am capturing analog to DV using DVD workshop and then burning to DVD-R. I am trying to get the highest quality and still keep 1hr 38 min of video under 4.7 gig. (mpeg-2 720x480)

    Should I be using a CBR or a VBR. I know that VBR will result in a smaller file. Also, I have the option of interlace or De-interlace. Right now I'm getting lines that show up when there is movement in the video. When there is little movement the problem decreases. What combo of CBR or VBR in conjuction with inetrlace and De-interlace should I be using?

    For VBR what should the range be? (low-high)
    For CBR what should the max be? (6000 kbps)

    I had some success with a movie that I converted from analog. The quality was great and I used VBR. It played fine as a .mpg in windows media player, but when I burned it to DVD-R, it had a stuttering problem all the way through. The sound was jerky as well.

    I'm new to this but learning. Does anyone have any advice?

    Thanks!
    cplevel42@attbi.com
  • setarip
    Retired
    • Dec 2001
    • 24955

    #2
    "Also, I have the option of interlace or De-interlace. Right now I'm getting lines that show up when there is movement in the video."

    It would then seem that you will have to apply the Deinterlacing filter to your capture...

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    • cplevel42
      Member
      Member
      • Jun 2002
      • 75

      #3
      Thanks! I have it all worked out. I'm using the de-interlaced option at a 7000 VBR. The quality is great and the file size is low. I had to tweak some other settings as well.

      This DVD Workshop software is great, I just capture (transcode) straight to .mpg 2, Edit, and Burn straight to DVD-R. Really only three steps. I can avoid encoding with TMPGEnc all together saving me valuble time (usually 2 hours)
      cplevel42@attbi.com

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      • setarip
        Retired
        • Dec 2001
        • 24955

        #4
        "Thanks! I have it all worked out. "

        My pleasure - and congratulations on your success ;>}

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        • Nielchiano
          Member
          Member
          • Aug 2002
          • 70

          #5
          Ok, maybe I'm too late, but anyway: I live in europe, so I'll use european framerates and resolutions (and put the americans between (), if I know them)

          Since you've cptured DV (witch is about 25000kbps @ 360*288 @ 25 (30??) fps).
          Just for comparison: a DVD (bought) is 720*576 (720*480) or 704*576 (704*480) coded at about 6Mbps VBR (range from 500kbps to 9Mbps, depends on the DVD)

          So since DV is always lower quality (due to resolution) I don't think it makes much sence to code your movie at the full 7Mbps. I'd rather use 5Mbps or something, but since you don't have to worry about space, that's not a real concern.
          I suggest you ALWAYS use VBR, unless you have a reason not to (too less time/processor power, streaming, ...) VBR does take more time to code, but gives better result, and more accurate file-size (the actual bit rate will be closer to the requested one).

          European DV camera's use progressive images, so no interlacing is done in the camera. It makes no sence to make an interlaced movie of that... It'll only reduce the quality

          Hope this helps,
          Nielchiano
          We were all newbies once... and we all needed some help once, so lets once help the newbies.

          Comment

          • onerose
            Member
            Member
            • Nov 2001
            • 96

            #6
            no your not late! it helped me, i was testing with vbr and you just helped me with my test thanx

            Comment

            • cplevel42
              Member
              Member
              • Jun 2002
              • 75

              #7
              what?

              No Nielchiano your not too late, but I was way off base for posting a reply to a thread that was 1 month newer than this. Is that right onerose?
              cplevel42@attbi.com

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              • onerose
                Member
                Member
                • Nov 2001
                • 96

                #8
                like i said in the other post (there is no such thing as a bad question) this post was 1 month old the other one was 9 months old thats the difference for me!!!

                Comment

                • cplevel42
                  Member
                  Member
                  • Jun 2002
                  • 75

                  #9
                  No harm done dude, I just thought it was kinda weird that you would caution me about posting to an old discussion and then praise this guy for posting to an old topic that was even older.
                  cplevel42@attbi.com

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