Questions regarding TBC, audio/video sync drift and software Read more: ht

[Firewing]

Hi, new guy here. I would like to ask some questions regarding my setup.
I have these 2 VCR's:

-Panasonic NV-FJ612F-S (Doesn't have TBC)

-Panasonic AG-4700EY (Has built in TBC)

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I record using OBS and my capture device is Magix (Magix, rescue your video tapes is the product name)
The VHS cassettes I am trying to digitize are old family tapes written on PAL encoding.

Using OBS, a problem occurs that the audio will drift behind the picture at some point and this will only get worse as recording goes on. Restarting OBS seems to fix this but I'd rather have a more permanent fix to this problem which I am not really sure why it happens.

This also happens on virtualdub.

I don't have an external line TBC. I read the sticky on how DVD recorders don't really do the same job as external TBC's, but in my case, would it even hurt to use one? Don't really have the budget for an ext-line TBC.

And one more thing I'd like to ask, on some of my tapes on my no-TBC VCR the frames are skipping, same as in this guy's thread: http://www.digitalfaq.com/forum/video-restore/6233-frames-vhs-capture.html

-Why does this happen? Is the tape about to die?
-Would a solid TBC foundation fix this?

Thanks for reading.

[KarMa]

Try Amrectv https://www.videohelp.com/software/AmaRecTV

A TBC also has nothing to do with this problem.

[johnmeyer]

This is a capture card and/or capture software problem because the audio is obviously in sync on the tapes. TBC is not the issue here, as already stated.

Make sure your software settings match the nature of the material. For PAL everything should be set for 25 fps. If it is set for 24 fps or 23.976 fps (two other possible, common frame rates) you might have problems.

Make sure you use a USB 3.0 port. Their specs:

https://www.magix.com/au/video/rescue-your-videotapes/specifications/

don't specify this, but not having a fast enough port my cause issues.

Since this product is not sold here in the states, I don't know anything about it, but if I were you I'd sure look at every single menu and dialog box in the software and make sure all the functions are set correctly.

Also, why are you asking this question here? Go to Magix and ask them. They have pretty decent support.

[davideck]

A Frame Synchronizer (often referred to here as a "Full Frame TBC") may solve your audio/video skew issue. Every DVD Recorder that I know of contains a Frame Synchronizer in order to prevent audio/video skew on its own recordings. YMMV

[Firewing]

Thank you for your answers.
Is OBS a good capture program for this specific job?