Sound gets async vith Vdub

[danigon]

Hi all

I'm capturing with virtual dub at 352x288 and I have a little problem: the capture starts very well but after 50/60 min of capture sound starts being async (for 400/500ms). If the capture is longer the sync gets even worse.

When playing the captured video, it starts very well but the async degree becomes progressively high and after one hour or so the sound is really bad.
Is there any way to solve this?
Thanks all

[dar1us]

Pop along to your local supermarket and pick-up a copy of VirtualDub Sync, or as I call it on my desktop 'VirtualSync' (sounds kinda snazzy), but if you are too poor and cant pay for petrol, download it here.

http://www-user.rhrk.uni-kl.de/~dittrich/sync/VirtualDub-1_4_13__sync1_03/VirtualDub-1_4_13__sync1_03.zip

from the website (by the author?) http://www-user.rhrk.uni-kl.de/~dittrich/sync/

Sorry about the ^above above^, I guess I was just trying to be funny:)


dar1us

oops, looks like i messed up my signature!

looks like it works now, i spelled colour the proper way instead of the real annoying color, sounds more like collar that way and I appologise if this last bit is a little off topic:)

[Mike456]

after you captured the file, open it with virtualdub. Set audio & video to direct stream copy. Then go to Video frame Rate and coice change so that audio and video durations match. After doing this save the movie to another file.

[danigon]

I solved the problem using the VirtualDub_sync file.
Thanks

Daniel Gonçalves

[dar1us]

You understand what the VirtualDub Sync program does?

As I understand, it dynamically adjusts the video/audio interleaving(maybe that isn't the word?) so if you miss a frame, it will keep the audio in sync with the video. Something like that.

Anywho, basically, no problem. Enjoy

[^^-+I4004+-^^]

VDSync dynamically adjusts the audio sampling frequency
so it fits the video frame rate exactly.....
this means that sound is modified a bit, but you won't hear it
(well did you hear the difference?...hehe)

[dar1us]

You wont hear the difference unless you are capturing at like 10% of frames than you should be, but technically, you will know it is there.

Ideally, your machine will be fast enough, you hardware high enough quality, your cables perfect (on analogue capping) and you source ultra-pure. But we dont live in a perfect world... unfortunatly. In a perfect world, NDSVideoGuard Cams would be avalible and I would be capping using a DVB card. But hey, what do u know:(