VideoHelp Forum
+ Reply to Thread
Results 1 to 15 of 15
Thread
  1. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    wanted to re-encode this video after removing blends and/or ghosting, but havent had any luck improving those issues. Tried the usual methods (deinterlace, srestore, ivtc, decimate). If it's double-blended, how to fix? Apparently the video was an amateur transfer of film to video- I assume vhs tape- which eventually got onto dvd.
    Image Attached Files
    Last edited by spiritgumm; 6th Mar 2014 at 09:42.
    Quote Quote  
  2. Member
    Join Date
    Jan 2007
    Location
    Republic of Texas
    Search Comp PM
    There's a lot more going on here than just field blending and film pulldown issues. Much of the ghosting/tracer effect may be due to the video being run through a TBC with high digital noise reduction being applied. There is also something in the movement that makes me wonder if there was also some sort of standards conversion (NTSC to PAL or vice versa) applied in the mix. This one is a garbage in / garbage out situation. I'm sure someone can offer an avisynth script to clean it up a bit, but don't expect miracles.

    EDIT: Also, could this have been captured to your computer with the wrong field order? (There's something about the motion that makes me suspect it.) That would complicate things even more.
    Quote Quote  
  3. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    Originally Posted by filmboss80 View Post
    EDIT: Also, could this have been captured to your computer with the wrong field order? (There's something about the motion that makes me suspect it.) That would complicate things even more.
    I did a "quick stream fix" with VideoRedo, then extracted the clip with dgindex (honor pulldown flags)
    Quote Quote  
  4. Yeah, as filmboss says, it's a mess. Heavy use of DNR combined with field-blending or double-blended some other way (field-blending a video source, maybe?). And it's field-blended from an NTSC source:

    Yadif(Mode=1)#or QTGMC
    Srestore(frate=23.976)


    Other than that, I have no idea how to fix this kind of thing.
    Quote Quote  
  5. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    Using Srestore(23.976) looks slightly better than IVTC, but since I wanted to re-encode to dvd (adding pulldown), will I essentially be back where I started?
    Quote Quote  
  6. With severely blended video like this use QTMGC and treat it as 60p.
    Quote Quote  
  7. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    so just QTMGC which would give 59.94 fps? Or with srestore(frate=60)?
    Quote Quote  
  8. To echo filmboss80's suspicions. This looks sped up. Is it captured from a US broadcast?
    Quote Quote  
  9. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    Originally Posted by jagabo View Post
    With severely blended video like this use QTMGC and treat it as 60p.
    so.... just QTMGC which would give 59.94 fps? Or with srestore(frate=60)?
    Reducing to 23.976 fps looks slightly better than 29.97, but that was for a test-xvid (not dvd video).
    Quote Quote  
  10. Originally Posted by spiritgumm View Post
    Originally Posted by jagabo View Post
    With severely blended video like this use QTMGC and treat it as 60p.
    so.... just QTMGC which would give 59.94 fps? Or with srestore(frate=60)?
    Reducing to 23.976 fps looks slightly better than 29.97, but that was for a test-xvid (not dvd video).
    No, I just use QTMGC() and filter/encode at 60 fps. If you need DVD compatible output reinteralace at the end of the script.
    Quote Quote  
  11. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    Originally Posted by jagabo View Post
    Originally Posted by spiritgumm View Post
    Originally Posted by jagabo View Post
    With severely blended video like this use QTMGC and treat it as 60p.
    so.... just QTMGC which would give 59.94 fps? Or with srestore(frate=60)?
    Reducing to 23.976 fps looks slightly better than 29.97, but that was for a test-xvid (not dvd video).
    No, I just use QTMGC() and filter/encode at 60 fps. If you need DVD compatible output reinteralace at the end of the script.
    do you mean adding something like this at the end of the script, with encoder set to "interlace"?
    SelectEvery(4, 0, 3)
    Weave()
    Quote Quote  
  12. Reinterlace 60p to 30i:
    Code:
    AssumeTFF() # or BFF, whichever you want
    SeparateFields()
    SelectEvery(4,0,3)
    Weave()
    Quote Quote  
  13. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    aside from any clean-up, is this going to look much different than the original?
    Quote Quote  
  14. Originally Posted by spiritgumm View Post
    aside from any clean-up, is this going to look much different than the original?
    No. The point is it's too far gone. You can't eliminate the blending so just live with it. Clean up whatever else you can.
    Quote Quote  
  15. Member spiritgumm's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    I only wanted to fix the blends, not "polish a turd."
    Thanks anyways.
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!