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AVI smooth - Mpeg2 slightly blurred

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by kobus, Apr 25, 2005.

  1. kobus

    kobus Member

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    hi

    I find that my DV footage (AVI) is smooth on the PC. I then convert this clip to mpeg 2, at highest settings for quality and motion only to find that it seems the "frame rate" drops. What I mean by this is fast moving objects (cyclists) are slightly blurry, while they are in smooth motion in the AVI clip.

    Any ideas? I have tried many settings, and cant get rid of this issue.

    regards

    Kobus
     
  2. rebootjim

    rebootjim Active member

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    What are you using to "convert"?
    You say "highest settings"...what are they?
     
  3. kobus

    kobus Member

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    hi

    Sony vegas 5 (mainconcept mpeg2 encoder).

    settings:
    video - best
    VBR 2 pass and 9800 bps average
    I frames - 15
    DC coeficient 10
    B frames 2
    Pal video at 25 fps
    main profile
    interlaced - bottom field first
    I even tried "allow field based motion compensation"

    It is for converting mountain bike video (AVI) from my Sony digital 8.
    As mentioned the AVI is smooth but mpeg2 slightly blurry (like low frame rate?) on fast motion.

    thnx

    Kobus
     
  4. rebootjim

    rebootjim Active member

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    What aspect ratio is the source?
    If you're upsampling to 720x576, things can get blurry, and it's nothing to do with bitrate.
     
  5. kobus

    kobus Member

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    no, I use the same aspect ratio as captured. Pal DV 720 x 576
     
  6. rebootjim

    rebootjim Active member

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    Have you tried bottom field first?
    Have you messed with interlacing?
    Have you viewed it on a TV, not just the PC?
    What are you using to view it?
     

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