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-   -   VirtualDub capture wrong, deinterlacing looks terrible? (https://www.digitalfaq.com/forum/video-capture/14908-virtualdub-capture-wrong.html)

creampuffyness 01-25-2025 08:45 PM

VirtualDub capture wrong, deinterlacing looks terrible?
 
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I am going absolutely insane trying to figure out what I am doing incorrectly. I will try to recap my struggles without too much fluff.

For my "archival" quality VHS (and other) captures I have been using OBS to x264. It's quick and it works reasonably well for my needs. I allow OBS to handle deinterlacing with "Blend" or "Yadif2x". I output to .mp4 1440x1080. I can archive 5-10 tapes per day. I'm not here to debate the use of OBS.

I'm running out of "archival" quality tapes, and I'm getting into the stuff I care about, or others care about. This is when I want to capture properly with VirtualDub at 720x480, perform a deinterlace run, then upscale and re-encode it to something smaller, likely x264 .mpg.

My Setup:
JVC HR-S9911U -> SVideo -> Videonics MX-1 -> Svideo -> I/O GVUSB2

Everything is NTSC.

I just got the MX-1 today and I have tested with and without it. So far I really like it by the way. A pretty damaged copy of Shrek (for testing) played really well while the MX-1 was in the chain, and it was terrible without it.

I have captured with VirtualDub 1.9.11 (obtained from this site), and 1.10.4. I have tried Huffyuv, Lagarith, and UtVideo YUV422. Some trial and error keeps putting me back at Huffyuv.

My files output 720x480 29.97 as expected. I can clearly see the interlace lines in the recorded video and its smooth, it looks great. I load the captured .avi into VirtualDub, add the internal "deinterlace" filter. Everything I seem to capture is Bottom Field First. That seemed strange to me, but ok. I check TFF and BFF and BFF is clearly correct.

I run the "raw" avi through any of these programs and they all produce absolute garbage output.
Hybrid
Staxrip
Handbrake
Virtualdub (deinterlace filter applied).

Its like the file I captured (the raw file) is progressive and not interlaced. Everything is jumpy, nothing is smooth. I have tried TFF and BFF, and again, BFF is clearly the correct choice.

The GVUSB2 is already set to "Weave" in the device properties.

I have spent multiple days of encoding time making garbage output. I have tried retail, home videos (camcorder), and recorded off TV. Everything I deinterlace looks far worse than what I am capturing in OBS.


I've watched 50 youtube videos, read a hundred forum posts (most of which conflict each other). I'm out of "Ah-ha!" moments to try.

Would uploading some samples be helpful? If so, should I attached them directly or upload to youtube? I would appreciate any insight if anyone has any guidance on I still see line jitters, fuzzy video after deinterlacing attempts.

creampuffyness 01-25-2025 10:18 PM

Well I might have solved by own problem. When I was deinterlacing in Virtualdub, I was not setting any compression. After adding the Deinterlacing filter, setting compression to Huffyuv, and saving that .avi, the results are quite decent. I have been using Brovicon which is a very simple GUI for ffmpeg I have been upscaling successfully to 1440x1080.


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