ADVC-100/500 - Closed Captioning ??'s

Jsnkc wrote on 11/14/2003, 3:53 PM
I tried to post this on the Canopus site but nobody there seems to know the answer.

A few of our clients have closed captioning on all their masters (beta) Currently if we run them thorugh our Sony DV-CAM deck ( DSR-2000) then through firewire into Vegas. When we do that the closed captioning on the video will stay intact when we output the video using the same method. We are trying to find out if the ADVC-100 or the ADVC-500 will pass the closed captioning. If anyone out there is using either of these boxes and knows the answer it would be greatly appreciated since we finally have the go ahead to purchase something for Analog to Digital conversion.
Thanks

Comments

Leviathan wrote on 11/14/2003, 7:13 PM
By "pass" the closed captioning you mean convert from A-D or D-A and still have the closed captioning all there and unmarred, able to display on a TV? If yes, then I don't know offhand but I'll try it on my ADVC-100 when I go back to work next week.

Leviathan
Jsnkc wrote on 11/14/2003, 8:16 PM
Yes, that is what I mean.
Jsnkc wrote on 11/17/2003, 10:00 AM
Sorry to have to "Bump" this one back up but I really am desperate to find and answer to this question!
farss wrote on 11/18/2003, 12:31 AM
I haven't tried this so I cannot say for certain it will work.
The CC data is stored in the first few lines of video, I'm guessing it must have a fair amount of tolerance to being mesed up if it survives going through the A to D on the DSR-2000. If that's the case then I'd say it would survive the ADVC-100 or 500.

The only thing you should watch out or is you must be gradually degrading this information and you may be getting it to the point where it's marginal. Effect of that might be that the CC isn't transmitted as well as it might so you can decode it in the studio but the viewers with slightly off reception loose it. I've noticed with even slightly off reception we loose the CC.

Way around this would be to regen the CC, i.e. reread and encode it back in when you've finished whatever you're doing with it. I think this was / is done a bit to with TC stored in the same area.

Hope this helps, sorry I cannot offer any hands on advice.

Jsnkc wrote on 11/18/2003, 10:58 AM
The only problem is that while the CC passes fine through the DSR-2000 and also our DSR-45, if we run it through a Panasonic AG-DV2000 the captioning doesn't come through. Seems like it works fine when we go through the DV-CAM Decks but not the MiniDV ones. We also have a Canopus ADVC-50 that won't pass the CC singnal either.

Oh well, I guess since nobody knows for sure I guess we will just have to buy the darn things and try it out for ourselves.
farss wrote on 11/18/2003, 4:59 PM
Don't know if this helps but I've captured from DigitBeta via its composite output into my D8 camera and it caught the TC in the top few lines so I assume it will capture the CC data as well.

Question is are the lines missing or has the video been encoded such that the data is too scrambled to be read?
Jsnkc wrote on 11/18/2003, 7:03 PM
All the masters are betacam. They send us the edited masters and then I closed caption them. They usually just want us to combo a few programs together and remove the credits in between them or just small things like that. So I know that the lines are there and the CC is there, and that it was layed on the master properly.
Leviathan wrote on 11/20/2003, 6:53 PM
Hi,

Sorry this took so long, didn't get doing any video stuff until today. I would have to say that as of today it doesn't look like the Canopus ADVC-100 will convert A-D and back again with the closed captioning intact, however I only got trying it with one video tape (which I was having trouble capturing because it seemed to be copy protected or something, which I have never seen on a VHS tape)....kinda odd, I'll have to try it with something else, I just grabbed my copy of "Finding Nemo" on the way out this morning because I knew it had closed captioning. But anyway I had no luck with that tape, I'll try it with something else ASAP.

Sincerely, Leviathan