Some Noob Analogue Capturing Questions

I could really do with some advice here please because I'm on the right track but going wrong at some crucial stage. Following the capture guide on Doom9 and the suggestions on here, I've set up my PC to capture from Laserdisc. 

When I playback and review the end result, it is always a small narrow image of video. Here are some screencaps to demonstrate the problem.

I have to switch to the 4:3 option in VLC or Media Player Classic in order to maximise the frame so that it enlarges and stretches across the screen properly. Like in the screencap below.

Also, the captured video suffers from frame tearing, especially during rapid action sequences. I don't experience this when watching other video files so I know its not a problem related to V-Sync issues in my media players. I have searched through OT.com and Google for similar instances but couldn't find anything.

Can anyone offer any pointers or tips for me to correct these issues please?

Here are the specs of the PC I am using for the video capturing...

P4 3.06hz, 2GB RAM and 320GB HDD space running Win XP SP3 (fully updated and tweaked) with all anti-virus and firewall services deactivated.

WinFast VC100 XP PCI card with VirtualDub 1.9.10 handling the capturing.

I am no expert but if I had to guess I would say it looks like you've only captured either the top or bottom field for each frame, that's why the images are half the proper height (240 instead of 480) it would also explain the jaggies/aliasing/tearing you are seeing. Or you have somehow captured at double the normal frame rate causing each field to become its own frame... :S Unfortunately I have no experience capturing using VDub or the capture card you have so I don't have any advice on how to fix this. :(

Hopefully someone else will be able to steer you in the right direction! ;)

LeeThorogood said:

I am no expert but if I had to guess I would say it looks like you've only captured either the top or bottom field for each frame, that's why the images are half the proper height (240 instead of 480) it would also explain the jaggies/aliasing/tearing you are seeing. Or you have somehow captured at double the normal frame rate causing each field to become its own frame... :S Unfortunately I have no experience capturing using VDub or the capture card you have so I don't have any advice on how to fix this. :(

Hopefully someone else will be able to steer you in the right direction! ;)

Hi Lee,

Thanks for your response! It gave me enough of a lead to receive help elsewhere. :)

After a great deal of troubleshooting and trial and error, I succeeded in isolating the source of my difficulties. VirtualDub, for some unknown reason cannot interface properly with my PC's hardware. Instead, I switched over to using iuVCR and within minutes I was able to produce a good capture!

[/IMG]

[/IMG]

[/IMG]

[/IMG]

[/IMG]

If anyone else has problems with VirtualDub, it might be worth giving iuVCR a go. Now I can proceed with my project! :)

Happy to be of help. :)

Good Luck with your project!