[GUIDE] Colour Change with Hybrid & QTGMC Deinterlacing

[Selur]

To figure out whether this is caused by the deinterlacing I did the following:

• open two instances of Hybrid
  
• open the source file in both
  
• in one I overwrote the scanorder to progressive (so that Hybrid would not deinterlace)
  
• enabled histograms
  
• opened the Vapoursynth Preview in both instances
  

This way I get one version where interlacing is applied and one where it isn't.

I also looked at the separate YUV channel.
Org:

Deinterlaced:

yes there are differences in the u&v due to the filtering, but nothing dramatic.

Then I enabled bob and looked at the histograms and you see rather strong changes in the chroma planes.
If you got through the source and look at the bobbed frames you see that the first few fields after the first scene change are broken. (you can also see this when overwriting the scanorder to progressive)

But still I could not reproduce the color change.
I also did a reencode of the file and asside from smoothing through the compression I couldn't reproduce the color changes.



Cu Selur