[HELP] Repeating Frames

[haxi]

Hello!

First of all, I find this project to be amazing. Searched for a QTGMC deinterlacer GUI for a long time now. Finally found it. Respect!

Version 2021.12.10.1
I am using it for deinterlacing DV video (so bottom field first), with QTGMC with the medium preset (if that is important to know). I am also using the MC temporal denoiser, but I think this is not the problem. I am using ProRes. Audio is on passthrough usually (not always).

I converted a couple of videos now, and of what I have seen, there are some repeated frames every now and then. I had a look at it in TMPGenc, and it looks like this 0-1-2-1-2-3, so the picture jumps back once.

Any ideas how to fix this?

Thanks in advance!

edit: tried it on a different computer, same problem, even same frames concerned.

edit2: happens also with other deinterlacers in hybrid!

Haxi

[Selur]

Any ideas how to fix this?

Sounds like the scan order flag on your source is wrong.
Overwriting it to the correct value (Filtering->(De-)Interlace/Telecine->
Deinterlace/Telecine Settigs->Overwrite input scan type to') should help.

Cu Selur

[haxi]

Any ideas how to fix this?

Sounds like the scan order flag on your source is wrong.
Overwriting it to the correct value (Filtering->(De-)Interlace/Telecine->
Deinterlace/Telecine Settigs->Overwrite input scan type to') should help.

Cu Selur

Thanks for your reply!

I tried all the input scan types, the only one that results differently is "progressive". With progressive input scan that issue does not happen (but of course the picture looks terrible).

I tried it with TMPGenc to deinterlace (double frame rate). It does not happen there. So I guess either there is something wrong with my configuration (did not change much, only necessary things), or there is some bug.

It's just a normal DV codec, directly from the camera, nothing special actually.

Any advice is much appreciated! Thanks!

[Selur]

Got no problem with normal dv here (bob and same rate deinterlacing using QTGMC).
If you upload a small sample (which allows to reproduce the issue) somehwere and share the link I can look at it.

Cu Selur

[haxi]

Got no problem with normal dv here (bob and same rate deinterlacing using QTGMC).
If you upload a small sample (which allows to reproduce the issue) somehwere and share the link  I can look at it.

Cu Selur

I recorded a video for that now, sorry that it is so stupid. AVI is ok. With mov you can see this problem:

00:32:10
00:32:12 (back)
00:32:14 (same as 32:10)

**
**

edit: As I'm doing that professionally, I will send you some money, if we can fix that.

[Selur]

i don't see the problem.
What I did:

• start Hybrid
  
• load the .avi
  
• open Vapoursynth Preview
  
• go to frame 800, step through the next 100 frame and see no repeated frames
  

Cu Selur

Ps.: to be sure we use the same versions I'll compile new dev version and send you a link in ~20min

[Selur]

send you the link to my current dev verison via pm
In case it's a problem with the source filter, you could try whether enabling "Filtering->Vaporusynth->Misc->Source->Prever AviSource for .avi input" does make a difference assuming you got 64bit vfw decoders for dv on your system.

Cu Selur

Ps.: have to go to bed now (have to stand up tomorrow at 4am)

[Selur]

Okay, since it does work with x264&co and only fails when ffmpeg based encoders are used, I would need a debug output to be able to reproduce the issue.
-> okay, I see the issue.
The expected output file isn't properly detected.
-> will look at it after work,.