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[HELP] Deinterlacing + Detelecining VFR (Star Trek: Voyager DVD Rips)
Hey everyone. 

Apologies if this topic has already been addressed; I attempted multiple searches of both this forum and the wider Internet without success. 

I’m trying to deinterlace and detelecine my DVD rips of “Star Trek: Voyager”. However, the variable frame rate seems to be confusing Hybrid; I’ve tried using frame duplication in HandBrake to make the frame rate a constant 29.97 fps before processing with Hybrid, but this falsely sets the scan type to progressive (messing up automatic deinterlacing and detelecining in Hybrid) and it also bloats the video size by +25% to the 23.97 fps sections. 

Specifically, when I attempt to feed the raw DVD rips into Hybrid, the output is the wrong length and it has the wrong number of frames. I think the problem is in my TIVTC settings, specifically the TDecimate Mode — the documentation suggests I should use TDecimate Mode 3 for VFR content, but Hybrid only shows TDecimate modes 0, 1, 2, and 7. Also, the Hybrid section within the TDecimate settings says to use option 2 for VFR, but the only options it shows are “no handling”, “blend 30p->24p, keep 24p", and "blend 24p->30p, keep 30p".

A few tips suggested that I split the videos by frame rate so that I have one set of 23.97 fps clips and another set of 29.97 fps clips, but I’ve never heard of a way to do that automatically and it would be unacceptably labor-intensive to do it manually. Plus that just sounds unnecessary. ¯\_(ツ)_/¯ 

Maybe I’m just using the wrong auto deinterlace handler? But my understanding is that TIVTC is the correct choice for content that is both interlaced and telecined. 

Oh, and I need the output to be lossless because this is just a preliminary processing step before I feed the videos into Topaz Video AI’s Artemis LQ 2x upscaling model, after which I then import into Final Cut Pro to add an appropriate amount of simulated film grain using the FilmConvert plugin as well as doing some modest amateur color grading. Then, after all that, I transcode using x265 10-bit RF 18 veryslow. 

Basically, it’s a lot. I’m feeling overwhelmed. I really hope someone here has experience feeding variable frame rate interlaced telecined content into Hybrid, so that they can just tell me what settings to use. But short of that, pointing me in the right direction would also be very helpful. :)

if you don't understand -how to use this

then everything is bad.
a. Some older sci-fi dvd like some Star Trek releases (Voyager, DS9,.. all the same trashy authoring) and Babylon 5 are simply a mess.
As far as I know there is no way to handle these properly in an automated way, which is why Hybrid isn't really suited for these. One would have to write one's own scripts to handle these.

b. Hybrid uses MediaInfo to analyze the input, if the input is detected as progressive, means that it is flagged as progressive. So my guess it whatever you do with Handbrake flags the content as progressive.
c. Content on DVDs is always constant frame rate, otherwise those are not standard conform DVDs. The DVD might contain a mix of interlaced, telecined, progressive content, but the frame rate is cfr.

Since you don't want to handle the content properly, you can quick&dirty, deinterlace the content to 29.976 and live with:
a. duplicates for scenes that were telecined or (soft) telecined.
b. duplicates and aliasing for scenes that were progressive 23.976.
c. aliasing for scenes that are progressive 29.976.

Cu Selur

Ps.: Regarding TDecimates modes (, it is correct that Hybrid does not support the modes which create vfr output.

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