Matrox G400 video capture stop at 1 hour, 11 minutes?

[Lambchop]

I've been having my first crack at capturing with my Marvel G400TV, and have just left it recording with VirtuaDub. I've had many problems on the way sorting out whats going on, and I just came across this on the virtuadub website. Does anyone know if this applies to the G400TV?

"Why does my video capture stop at 1 hour, 11 minutes, but I still get audio?
This is a bug in many video capture drivers. The exact limit is actually 232 microseconds, or 1 hour, 11 minutes, 34 seconds. Many TV tuner devices are susceptable to this bug, as are the miro/Pinnacle DCxx devices; you may be able to fix the problem simply by upgrading to the latest capture drivers. There are two incarnations of this problem. In the non-fatal version, video frames are still sent to the application, but the timestamp on the video stream starts over from zero. VirtualDub will correct for this problem automatically, allowing you to capture beyond 71 minutes. The other possibility is that the driver stops sending data altogether. VirtualDub will notify you if this occurs, but will not be able to capture past 71 minutes in this case."

[iant]

I've got a Marvel myself and can't say I've run into this problem even though I've done a few hour and a half plus captures.
I've been using the 'final' Win98 capture drivers.
I'll also add that I stopped using VirtualDub and switched to AVI_IO as VirtualDub resulted in more frame drops. AVI_IO also has a nice feature where you can pause and resume a capture which is very handy if you're copying video tapes.
Good Luck,
Ian

[Lambchop]

Cheers Ian,
I posted that last one because I've been leaving my computer alone whilst capturing, and each time it comes up with a different reason for messing up. I'm copying an old video with lots of gliches in it, so suppose that could be the problem with the failures I'm getting, but thought I might as well check. BUT...is it easy to recombine the segmented files for mpeg encoding after capturing?
Cheers again!
Lambchop

<font size=-1>[ This Message was edited by: Lambchop on 2001-08-22 18:09:10 ]</font>

[Lambchop]

Hi again,
Just been looking at the features of AVIIO, and was wondering...does it lock the audio to the video in the same way you can make virtuadub do? I've got some rusty vhs's where frames are dropped, and dont want to end up with bad audio sync. There doesnt appear to be any obvious setting that says it allows this...
Cheers

[iant]

Lanbchop,
Yep, I've never had an AVI with a synch problem while using AVI_IO. It seems to lock them together as a standard function. ( It should be a standard across all capture programs....why the heck would you want your audio to desynch as the capture proceeds....Sheesh. )

Just as a sideline, if you check out the Matrox forums you can also search and find references to the macrovision protection remover for the Matrox capture driver. This avoids a lot of problems with clapped-out tapes that drop signal a lot. You will not have the capture stopping all the time complaining about non-existant copy protection.

As for combining AVIs together, the multi-segment captures that AVI_IO does are totally compatible with VirtualDub so you just load them in there and frameserve to TMPEG. ( Or whatever your favourite encoder is. )

I think that's all the questions asked. ( And a couple that weren't. )
Have fun,
Ian