[HELP] Any ideas on how to handle a variable FPS source?

[Motorbreath]

Depending on the deinterlacer the resolution and your system deinterlacing can take quite a while.
I think it's bad idea to use scale in combination with bob.
It's still not clear to me what you are aiming for.

What you could do, is:
1. deinterlace using a Bobber, for example using QTGMC in Bob mode.
2. Drop Frames do archive a specific bitrate using sRestore
3. Interpolate Frames using Interframe

Cu Selur

Deinterlacing the whole 2:20:00 source while also resizing it to 1440x1080 using NVEnc only takes me about 20-30m. Building the final mp4 out of it takes about the same afterwards.

Why is it a bad idea to use Scale with bob? Why does Scale increase the length of the video in this case to 4:00:00 if according to the description it clearly shouldn't?

I'm aiming for turning the 720x480 interlaced source into 1440x1080 progressive 60fps. The plan was to first and foremost do deinterlacing and resizing and then 60fps conversion, but I am currently struggling with the variable fps. I am reluctant to use ivtc-filmdint because even though it seems to be the only available deinterlacer capable of dropping double frames, I can clearly see the horizontal stripes on the preview. bob and cubic interpolation seem to handle it better, but in those cases variable fps stays. Kind of a dilemma.

Plus I don't quite get the methods you propose. Maybe a step-by-step instruction would help. For example so far QTGMC doesn't even apper for me under (De-)Interlace/Telecine tab and I can't find anything resembling it under the Avisynth tab. The only mention of it is in the deinterlacer help window.