VideoHelp Forum
+ Reply to Thread
Results 1 to 7 of 7
Thread
  1. I'm getting some heavy aliasing artifacts on a VHS capture and I can't tell if it's part of the source video, or if the artifacts are being introduced by QTGMC. I'm in the process of converting my entire VHS collection, and so far nothing has stood out to me like this, which leads me to believe it's the source.

    Sample videos linked below. I'd appreciate any insight offered.


    Raw capture:
    https://files.videohelp.com/u/239633/unprocessed.avi

    Processed with Avisynth:
    https://files.videohelp.com/u/239633/processed.avi


    Script:

    Code:
    SetMemoryMax(1200)
    
    SetMTMode(3, 6)
    
    FFmpegSource2("R:\vid.avi", atrack=1)
    
    SetMTMode(2)
    
    ConvertToYV12(interlaced=true)
    
    AssumeTFF
    
    QTGMC(Preset="Very Slow", SourceMatch=3, Lossless=2, MatchEnhance=0.75, Sharpness=0.1, EdiThreads=3)
    
    #LanczosResize(640,480)
    Quote Quote  
  2. It's the source.
    Quote Quote  
  3. Originally Posted by manono View Post
    It's the source.
    Thanks for confirming. Should I expect any amount of aliasing using a clean source with that script?
    Quote Quote  
  4. Even with a clean source you will have problems with very thin ~horizontal lines in motion.
    Quote Quote  
  5. Originally Posted by jagabo View Post
    Even with a clean source you will have problems with very thin ~horizontal lines in motion.
    Per my script? Or just an inescapable consequence of deinterlacing?
    Quote Quote  
  6. Originally Posted by Ish Kabibble View Post
    Originally Posted by jagabo View Post
    Even with a clean source you will have problems with very thin ~horizontal lines in motion.
    Per my script? Or just an inescapable consequence of deinterlacing?
    Any deinterlacer.
    Quote Quote  
  7. Understood. Will keep the unprocessed files for archival and future tweaks if necessary.

    Cheers.
    Quote Quote  



Similar Threads

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