PDA

View Full Version : PAL VHS Capture


Captain_Nipple
16th January 2002, 00:04
Hey all,
I'm fairly new to video capture and I have a quick question.
My rig is a 1.4AMD, KT133a, 256mb ram, 2xWD 40Gb hdd, ATI Radeon, ATI TV Wonder, SBLive! and running on XP and Win98.

When I'm capturing from my VCR (Coax connection :( ), I get what look like interlaced lines along the screen in the final AVI and also from the "Live" feed. At least that is what I think it is. This is the same in MMC 7.1 and in VDub and also in WinXP and Win98.

Am I right in believing this is? When I apply a simple Deinterlace filter in VDub, the resulting image looks much better (Still has the odd line). I have tried a retail video (Matrix) and one I recorded from TV from VCR, both same.

But also, the recording from Live feed from cable, same issue, but not as bad. Would this be a driver issue? PAL/NTSC issue?
Again, I'm kinda new to vid capture so any form of feedback is good.

Captain.

Captain_Nipple
16th January 2002, 00:22
This image is similar to what I see from the Live TV feed too.

http://208.189.26.162/vbb/attachment.php?s=&postid=67574

roy
16th January 2002, 19:52
Yes, you're right. I think yud'd better use filter SamrtDeinterlace. It gives much better looking results. And my advise don't use option to blend fileds. If you wil use it you will get shadow effect. I don't like it.

Cart
19th January 2002, 23:15
Interlacing is very common in video when capturing the full vertical resolution. However, the lines in your picture look a little strange. What resolution are you capturing at? Did you resize that frame before posting it?

-Cart
http://www.geocities.com/lukesvideo/index.html

Captain_Nipple
20th January 2002, 00:56
Hey Cart. Nice helpful site by the way;)
The pic posted is not one mine. Found it on some site in a quest for answers. It is just very similar to what I am getting. Can I capture in VDub and apply filters during capture, will they affect the capture in real time. If yes, would I probably drop alot of frames?. I think a bit more practice my end anyway would be better because this could be a simple config issue. I'll have time at the weekend.

Captain.

Cart
20th January 2002, 01:00
You can apply filters in VirtualDub during capture, but I have to yet to see a computer that's fast enough.
VirtualDub does have a simple 2:1 vertical reduction filter that's relatively fast, but that reduces frame size and causes ghosting artifacts.

In general, the best method is to capture your video as interlaced and then deal with the interlacing in the post-processing.

-Cart
http://www.geocities.com/lukesvideo/index.html