How to fix this progressive video with terrible interlacing artifacts?

[elektro]

Using Avisynth. Is there any trick to remove the interlace artifacts even if that means reducing the fps/resolution?

[jagabo]

I had to run this in 32 bit AviSynth since I couldn't find a 64 bit version of DeBicubic():

LWLibavVideoSource("clip.mp4", cache=false, prefer_hw=2) 
AssumeTFF()

p1 = DeBicubic(512, 288).QTGMC(FPSDivisor=2).nnedi3_rpow2(4, cshift="Spline36Resize", fwidth=1280, fheight=720)
p2 = DeBicubic(512, 176).QTGMC(FPSDivisor=2).nnedi3_rpow2(4, cshift="Spline36Resize", fwidth=1280, fheight=720)

Trim(p1, 0, 182)+Trim(p2, 183, 0)

[elektro]

I had to run this in 32 bit AviSynth since I couldn't find a 64 bit version of DeBicubic():

LWLibavVideoSource("clip.mp4", cache=false, prefer_hw=2) 
AssumeTFF()

p1 = DeBicubic(512, 288).QTGMC(FPSDivisor=2).nnedi3_rpow2(4, cshift="Spline36Resize", fwidth=1280, fheight=720)
p2 = DeBicubic(512, 176).QTGMC(FPSDivisor=2).nnedi3_rpow2(4, cshift="Spline36Resize", fwidth=1280, fheight=720)

Trim(p1, 0, 182)+Trim(p2, 183, 0)

Thanks, it worked! I have one more question: what's the reason you used two separate DeBicubics ((512, 288) & ((512, 176))? My original clip is 3 minutes 18 seconds and I must process the entire clip.

[jagabo]

The two sections were zoomed differently. I believe the original video was 720x480 and the different shots were cropped and zoomed differently.

Oh, I forgot there are 64 versions of the De*Resize filters. They are included in the ResampleMT package. So you can use 64 bit DeBicubicResizeMT(512, 288) instead of 32 bit DeBibubic(512, 288), etc.

http://avisynth.nl/index.php/ResampleMT

You can also play around with the horizontal sizes in DeBicubic to get slightly sharper video. And the upscale size to get more perfect aspect ratios. I started with DeBicubic(512, 288) because that gave a 16:9 frame which looked to be close to the correct aspect ratio. But then I saw the second part of the video needed a different vertical size. I adjusted the DeBicibuc height but not the width. It looks OK because both small frames are resized to the same final size.

[elektro]

The two sections were zoomed differently. I believe the original video was 720x480 and the different shots were cropped and zoomed differently.

Oh, I forgot there are 64 versions of the De*Resize filters. They are included in the ResampleMT package. So you can use 64 bit DeBicubicResizeMT(512, 288) instead of 32 bit DeBibubic(512, 288), etc.

http://avisynth.nl/index.php/ResampleMT

You can also play around with the horizontal sizes in DeBicubic to get slightly sharper video. And the upscale size to get more perfect aspect ratios. I started with DeBicubic(512, 288) because that gave a 16:9 frame which looked to be close to the correct aspect ratio. But then I saw the second part of the video needed a different vertical size. I adjusted the DeBicibuc height but not the width. It looks OK because both small frames are resized to the same final size.

Thanks for explanations + help. I managed to get a decent video out of that crummy recording.