PAL60 Wierdness

[Qjimbo]

Hi folks,
Basically I've been trying to capture this NTSC video to my PC with my PAL BT8x8 ATI TV Wonder PCI card (btwincap drivers), with a PAL video player that can play NTSC (as PAL60). However using the WDM interface seems to cause some really wierd problems, basically every so often the frame will get screwed up, I don't know whether this is the video player or not, but it makes using any WDM capture program impossible. So I tried using VirtualDub to capture with the VfW interface, but this goes wierd when capturing too, in that every second or so it'll capture about 50 frames in a massive burst and the total time will jump up insanely too. I have no idea why it's doing this. Interestingly, when viewing it in DScaler I get a really clear picture, shame DScaler doesn't have good capturing, someone should really improve that part of it ^^
But does anyone have any suggestions on what I could try?
Thanks!

EDIT: Forgot to mention in the captured AVI, the video has puases every few seconds and the audio gets progressively faster and faster.

[Arachnotron]

To start with the obvious: you did capture at 29.97 fps, 7XX x 480 ? I suspect you used PAL settings instead of NTSC timings. PAL-60 is NTSC in every aspect apart from the way the color is encoded.

[Qjimbo]

Yeah that did turn out to be the problem on ChrisTV, but on VirtualDub I put in 29.97 and for some reason it keeps changing it to 30.03030 sor something, very odd. I've got it capturing ok in FlyCap now though. But I could really do with a hardware capture card, I think I might splash out on a Theatrix when I have some cash (woo xmas money soon! XD)

[Mug Funky]

ah, i so wish PAL VCRs would output regular, unadulterated NTSC. old ones do, but the current line all output PAL 60 or NTSC 4.43 (not 3.58), and hence none of my capture stuff can read the colour...

i guess one has to choose their deck wisely... and asking a salesman is next to useless.

[Arachnotron]

@Mug Funky:

There is an advantage to pal-60 and VHS: it moves the color subcarrier out of the way of the details, thus causing less combfiltering artefacts. (Not that there are many with NTSC VHS to begin with)

@Qjimbo

Unfortunately, PAL-60 capabilities are an exception for capture cards and devices, so look out when shopping for a new one.