[HELP] Issue Deinterlacing Footage

[tom619]

Hi,

I've been having some issues deinterlacing some DVD footage. I am unsure of the original camera used to capture the footage, and only have burnt DVDs with the footage on. All of the resolutions are 720x544 (or 720x540) which is the wrong resolution for either a PAL or NTSC DVD, and because all of the footage is shot in America, I assume it would be NTSC format. I've tried resizing to 720x480 and deinterlacing afterwards but I'm getting thick bands across all of the footage when I do this. Is there any way to help deinterlace this footage, or is it too deeply burned in?

[Selur]

The ProRes file isn't interlaced but progressive. (can't say whether you messed up or your DVD source was messed up this much)
When interlaced content got encoded progressively and at the same time got resized vertically, you end up with those thick 'bands'.
This messed up the source, and you will still end up with ghosting and due to the horizontal scaling you will lose even more details.

Resizing to 720x320 before deinterlacing does seem to help with the deinterlacing. (my guess is the content was once captured at something like 640x320 or similar)
Adding Vinverse (or VInvers2) before the deinterlacing, while splitting the source into separate fields, helps with some of the chroma artifacts caused by progressively resizing interlaced content.
After that, you can apply some DeBlocking- DeGrain- and/or DeNoise-filtering.
I would recommend against using ml based filters other than deblockers, since ml based filtering will probably blur such a source way too much.

used script: https://pastebin.com/4QZuXf4F

Cu Selur

[tom619]

Amazing, thank you so much!