Video Capture

[Eric]

I am having a problem with video and audio being out of sync after approx.
30 minutes of capture. My system is a self built Athlon 3000+, 512 MB 400
Mhz Crucial Memory, Radeon AIW, SB Live! 5.1 Platinum, WD 120 GB HD c 8 MB
cache, DFI Lanparty nForce Ultra II MB.It happens whatever program I use for
capture ( EZ Creator 6, ATI MMC TV app, Ulead.

Eric

 

[Chimera]

I am having a problem with video and audio being out of sync after
approx. 30 minutes of capture. My system is a self built Athlon
3000+, 512 MB 400 Mhz Crucial Memory, Radeon AIW, SB Live! 5.1
Platinum, WD 120 GB HD c 8 MB cache, DFI Lanparty nForce Ultra II
MB.It happens whatever program I use for capture ( EZ Creator 6, ATI
MMC TV app, Ulead.

Eric

common problem, it's no reflection on the system you are using, moreso an
inherent problem with using two devices to capture two simultaneous streams.
Async errors are must commonly a result of small differences in the clock
crystals between the video and audio capture cards. Try using programs such
as VirtualDubMod or Virtual VCR that have built in resampling to comensate
for the drift in sync.

 

[Graeme Ellis]

To fix such files you can use any good sound editor to resample the sound to
the need Hz.

Say the sound is ahead of the video, resample up, slow = down.


My old system I use is about 9Hz fast. per hour. So I have to resample based
on this rate.

 

[Eric]

How do I do this?

Eric

To fix such files you can use any good sound editor to resample the sound to
the need Hz.

Say the sound is ahead of the video, resample up, slow = down.


My old system I use is about 9Hz fast. per hour. So I have to resample based
on this rate.

 

[Chimera]

There are some good capture guides around on sites like www.doom9.org etc,
go read them

 

[Graeme Ellis]

http://www.dvdrhelp.com/forum/archive/t78944.html


How To Fix Gradual Sync Problems

this is how to fix sync problems in mpeg videos where the audio
starts out being in sync and becomes off sync later

u need:
- sound forge www.sonicfoundry.com
- tmpgenc, or any other video software that can demux and mux the
video and audio streams
- virtualdub

.... Snip

BTW Any good sound editor will do, though this guide is uses the on linked
above. I used cooledit 2000. Selected all the sound file of the show.
Resampled based on an approx Hz upsample calculated by the method used in
the guide. I found the system I used was -9Hz out of sync per hour so
for the 2 hr show resampled to 44118Hz and it was fixed. Save the wav and
use tmpgenc to make a compliant Mpg file or VirtualDub to make an AVI/Divx
file.

You need to learn to google