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[HELP] Any ideas on how to improve the quality of this video? - Printable Version

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Any ideas on how to improve the quality of this video? - matti157 - 22.10.2024

I acquired a PAL VHS from the late 1980s shot with an amateur video camera. Also in the process the tape also broke, I know I don't have a good starting point....

Here is the video acquired before deinterlacing it with Hybrid:
[Image: pre.png]

Here it is after deinterlacing it + applying some filters:
  • Upscale to 1440x1080
  • Vapoursynth QTGMC slow preset + BOB
  • Colormatrix rec601 to rec709
  • Deblock QED default value
  • TemporalDegrain2 default value
  • Denoise QTGMC (final temporal smoothing 1, EZdenoise 6,50)
  • FineDehalo default
  • Frame resizer NNEDI3 48x6, 256 neurons
 
[Image: Post.png]

Any ideas to get sharper faces or am I satisfied that I already got a good result?

Thanks!

RE: Any ideas on how to improve the quality of this video? - lostsnowboardvideos - 23.10.2024

You can denoise using the QTGMC deinterlacer, no need to do it again the denoise tab.

My filters for interlaced content, in this order (you can set the filter order under Vapoursynth -> Misc -> Filter Order/Queue):

QTGMC custom preset: preset very slow, TR2=3, SourceMatch=3, Lossless=2, EZDenoise=0.50, NoisePreset="Slower", Denoiser="KNLMeansCL"
CAS .7 - .9 depending on the source
DPIRDeblock 10.0
MCDegrainSharp - default
DehaloAlpha - default
YAHR - default
Frame (see screenshot)

Also, I wouldn't convert the color scale from 601 to 709. Would leave it as is.

[Image: Capture.png]

RE: Any ideas on how to improve the quality of this video? - Selur - 23.10.2024

Hard to say from a still image, would need a short sample.
I would, try:
a. CAS (sharpening seems to be overexaggerated; FineSharp and 48x6 in NNEDI3 are probably at fault)
b. apply some denoising on the chroma
c. test if it makes sense to use CodeFormer (probably not)
d. SpotLess
e. some machine learning deblockers&Co

Quote:CAS .7 - .9 depending on the source
I usually try to stick below 0.7 Smile

Cu Selur

Ps.: Moved the thread to 'Small Talk' Smile

RE: Any ideas on how to improve the quality of this video? - lostsnowboardvideos - 23.10.2024

(23.10.2024, 05:27)Selur Wrote: I usually try to stick below 0.7 

I'm doing a ton of snowboard videos and I find that the higher CAS gives the snow a little more detail and character  Cool

RE: Any ideas on how to improve the quality of this video? - Selur - 23.10.2024

If, it works for your content, it's fine by me. Smile