How to activate TBC with a JVC HR-S7955MS ?

[suspend_moonlight693]

Hello,

I am trying to digitalize really old (30 years old) VHSC tapes. I bought a JVC HR-S7955MS (I am french and theses tapes were recorded there) and I am trying to restore them using an Aver Media H727 PCI Card (i connect with S-Video and RCA). I am using Virtualdub2 to capture.

In almost all the tapes I am trying to digitalize, I have a lot of "lost signal" black image appeareances. I try to play with the options available with the JVC. Please see the attached screen with all available options.
Some options make it better than the others, but it is never great. I do not think one option is the equivalent of TBC.

There is one exception thought : When I configure "Signal de sortie (Output signal) with the setting PAL (It is either DIRECT or PAL, my comprehension is that DIRECT is just transmiting the original signal from the tape whil PAL convert it to PAL.). Then, it works perfectly, I never loose the signal. This makes me think that the TBC is only activated when using this setting. Unfortunately it scrapes 20 % of the video of the bottom, probably due to the resolution differenc between the original format and PAL.

Here is a manual of an other version (Jvc-Hr-S7955ek) : https://www.manualslib.com/manual/23...page=33#manual where you can see the same option than the one from the pictures in french, to help with the translation.

Would someone have an Idea about how to activate TBC other than having to output in PAL ?

[aramkolt]

I don't believe the JVC HR-S7955MS has a TBC at all based on a quick search.

My guess is your tape is unstable enough where it doesn't know what format the color system is, so it'll bounce around to different outputs as it gets confused or will refuse to give an output at all. I've seen that happen on some of my external TBCs that support multiple formats where if the signal is poor enough, it doesn't properly auto-detect, it'll cut the video output altogether because you can't "force" it to just treat the signal as what you know it to be (NTSC in my case).

Your best bet may be to use a non-multi system VCR if you can. Being French though, they could be SECAM tapes which I've heard have their own quirks, so I don't know that you'll find many SECAM-only VCRs.

Also, some say that JVC's TBCs aren't active for SECAM tapes even on the multi system VCRs that do have an internal TBC. I have no experience on the topic, so can't say myself:
https://www.digitalfaq.com/forum/vid...capturing.html

[Bogilein]

Here are the features list from the service manual:

FeaturesSM.JPG

[suspend_moonlight693]

Hello,

Thanks for your help. I can actually force the colour system (SECAM, PAL, N/B or Auto). I tried every option and I still have the problem.

From Blogilein's post, it seems sadly confirmed that this JVS doesn't have TBC. And even if it had, apparently it doesn't work for SECAM (which is really likely the format I am working with.) from what you said (thanks you for that, probably saved me for buying another JVC for nothing )

I will try to confirm first that the format is SECAM, if yes looks like it is not gonna be an easy task. I do wonder why the image is so nice when I output it in PAL without any TBC thought

[aramkolt]

SECAM to PAL conversion doesn't change the resolution, it's just that the color is represented differently on the output. If I were you, I'd have it output PAL and capture as PAL if you are happy with that result. Since SECAM line TBCs might be hard to actually obtain, you could run it with one of the Panasonic or similar DVD players that'll accept PAL and have line-TBC-like effects.

[suspend_moonlight693]

I think I will do as you suggest for now (I will record the output on PAL. Changing a setting actually restored the 20% missing part, it was the image stabilizer option..).
To be sure to understand, do you suggest that I record the output in PAL and then make this ouptut run with one of the Panasonic or similar DVD players that'll accept PAL ? If so, how would I run a numeric video on them ?