Flip that XviD

Discussion in 'DivX / XviD' started by pntyliner, Jul 31, 2007.

  1. pntyliner

    pntyliner Regular member

    Joined:
    Mar 31, 2006
    Messages:
    121
    Likes Received:
    0
    Trophy Points:
    26
    I downloaded a vid and it's flipped upside down. How and why do people do this? Anyhow, I tried using the rotate filter in vdubmod, but have to be doing something wrong. Can anybody help?

    Thanks
     
    pntyliner, Jul 31, 2007
    #1
  2. attar

    attar Senior member

    Joined:
    Jun 17, 2005
    Messages:
    11,147
    Likes Received:
    41
    Trophy Points:
    128
    attar, Aug 1, 2007
    #2
  3. celtic_d

    celtic_d Regular member

    Joined:
    Jan 23, 2005
    Messages:
    3,352
    Likes Received:
    0
    Trophy Points:
    46
    So it is actually upside down in VDub? Flipping is usually a result of a bad YV12 to RGB colourspace conversion and generally occurs during playback. If the video is actually that way in VDub, then it would have been encoded that way. My advice would be to use AVISynth instead of VDub filters so as to avoid another RGB conversion. Just:
    avisource("whatever.avi")
    flipvertical()

    Only disadvantage is that if you don't process the audio separately you will have to re-encode it. AVISynth3 has DSynth built in though, so it won't be a problem in the future.
     
    celtic_d, Aug 2, 2007
    #3

Share This Page