Issue Using Hybrid to Deinterlace (QTGMC/Bob)

[low-fat-al]

I am only recently getting back in this space of video restoration and archiving. So go easy on me.

I am working on converting captured footage to a ProRes 422 for next steps in restoration. It has been over twelve years since I originally captured this footage and can't remember all my steps. Some footage came from 8mm tapes captured using a professional Hi8 Deck. For the life of me, I can't remember if it was a digital firewire type of connection to the computer. I am pretty sure I used VirtualDub to capture it.

I also have MiniDV footage that was for sure captured by firewire as well.

The footage I seemed to have the most issue with at the moment, only because I am going in order in the processing of them, is the 8mm footage.


It has been a hit and miss when using Hybrid for deinterlacing. I am trying to use QTGMC and enabling Bob so I can get the full 59.94 fps as the final output. Problem is that randomly it jerks back and forth. Not a specific number of frames. If you go frame by frame you can see it going forward then suddenly going back a frame then jumping ahead a couple of frames. When watching in realtime it looks real bad.

I have tried so many different settings to utilize the QTGMC Bob and it still does it.
It has a tick box to override the input scan type. When left unchecked, the output is 29.976 fps. When checked off and selecting Bottom Field First (which the source is) it shows 59.94 fps as output.

I also have used other applications like Shutter Encoder and just did the X2 / YADIF. Not the best quality at all using Shutter Encoder. Surprisingly fast though. And the result is a smooth playing video with no back and forth issues.

I am on a MacBook Pro, so I can't use VirtualDub or any PC applications.
I have Hybrid, Shutter Encoder and ff-Works. I do have access to a PC laptop with VirtualDub2 and any PC app if it needed, but I am trying to just use my Mac.

I have heard that Hybrid is the better option as a GUI run application for converting. But I am sure I am wrong.


Here is a 30 cut off of the original AVI file:
https://files.videohelp.com/u/71642/8mm%20Tape03%20_Hi8Deck__SE_30SecCut.avi

Here is result export from Hybrid using QTMGC with Bob to get the 59.94 fps:
https://files.videohelp.com/u/71642/8mm%20Tape03%20_Hi8Deck__SE_30SecCut_Hybrid.mov


Here is the result export from Shutter Encoder using 2x yadif to get the 59.94 fps:
https://files.videohelp.com/u/71642/8mm%20Tape03%20_Hi8Deck__SE_x2_yadif.mov



Any ideas on what to do here?

[Baldrick]

Continue in https://forum.videohelp.com/threads/418812-Issue-Using-Hybrid-to-Deinterlace-%28QTGMC-Bob%29