Quantcast Cannot get audio/video to sync in VirtualDub capture? - digitalFAQ Forum
Go Back    Forum > Digital Video > Video Project Help > Capture, Record, Transfer

Reply
 
LinkBack Thread Tools
  #1  
03-21-2016, 08:47 PM
Johncan Johncan is offline
Free Member
 
Join Date: Mar 2016
Posts: 7
Thanked 0 Times in 0 Posts
I am struggling to get audio and video to sync when capturing VHS-C tapes on my rig using VirtualDub. On a 30 minute capture I have only 1 dropped frame, but the audio is about 1 to 2 seconds ahead of the video. I have followed many of the steps from this link:

http://www.digitalfaq.com/guides/vid...ped-frames.htm

My capture drive is on a separate hard drive from operating system. I have antivirus turned off and Internet is not connected. When capturing the system is at about 20% of the CPU.

My signal path is Panasonic AG-1970 -> AVT-8710 time base corrector -> Hauppauge USB-Live2 (both audio and video connected to the USB-Live2)

It seemed to sync before I added the AVT-8710.

On Virtualdub, I use Overlay and have turned off Audio Preview and Video Preview. I start the capture using F6.

CPU: AMD Athlon 64 X2 3800+ 2.01 GHz
Motherboard: MSI MS-7207G
Memory: 3.5 GB PC3200 (200 Mhz)
Graphics: NVIDIA GeForce 8400 GS 512 Mbytes
Sound: M-Audio Audiophile 2496
Windows XP Home SP3 32 bit

I do have a ATI All-In-Wonder 2006 256MB PCI Express Video Card coming soon. Maybe that will help.

Anything else I can tweak?
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Ads / Sponsors
 
Join Date: ∞
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
03-22-2016, 02:17 AM
punker punker is offline
Free Member
 
Join Date: May 2014
Posts: 7
Thanked 0 Times in 0 Posts
you could record the audio first then do a playback on another computer output you ill have to sync it up manually though might take a few tries to sync it up

Last edited by punker; 03-22-2016 at 02:29 AM.
Reply With Quote
  #3  
03-22-2016, 12:05 PM
sanlyn sanlyn is offline
Premium Member
 
Join Date: Aug 2009
Location: N. Carolina and NY, USA
Posts: 3,448
Thanked 1,075 Times in 895 Posts
Quote:
Originally Posted by punker View Post
you could record the audio first then do a playback on another computer output you ill have to sync it up manually though might take a few tries to sync it up
That shouldn't be necessary, and probably won't work.

I'd advise johncan to find the setting for "adjust audio to sync with video" or "adjust video to sync with audio", or something like that. Look under "Capture" --> "timing" at the "Capture Timing Settings" window and tell us what audio settings are checked.
Reply With Quote
  #4  
03-22-2016, 01:58 PM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 8,477
Thanked 1,392 Times in 1,224 Posts
The age of a system has nothing to do with audio/video sync. I was having zero sync issues in the 1990s. It's always been an issue of codecs, hardware, or drivers, or combination thereof.

M-Audio hardware is not known to be the best for maintaining constant sync. So that's one potential issue I see right away. Yes, M-Audio makes all sorts of nice high-end audio products, but the application is for audio only. When you add video to the mix, things change.

I've noticed a trend lately, where more than 50% of the time, when a person has issues, they're using a MSI board. I used to think that board fine, but I'm now wondering about that.

Is that one of the all-black AVT-8710 units, which is known to have flawed chipsets? I doubt it's causing audio issues, but in theory it could cause delay issues. Have you done a process of elimination, and tried with that TBC for the moment, to troubleshoot sync problems?

SP3 can be part of the problem as well. Sync issues and dropped frames are a known problem of SP3. If used, you must disabled a lot of "security" junk that MS added to that SP. That was MS attempting to Vista-ize XP, and it screwed some things up in the process. That's why SP2 is always suggested.

- Did my advice help you? Then become a Premium Member and support this site.
- Find television shows, cartoons, DVDs and Blu-ray releases at the TVPast forums.
Reply With Quote
  #5  
03-22-2016, 04:24 PM
Johncan Johncan is offline
Free Member
 
Join Date: Mar 2016
Posts: 7
Thanked 0 Times in 0 Posts
Quote:
I'd advise johncan to find the setting for "adjust audio to sync with video" or "adjust video to sync with audio", or something like that. Look under "Capture" --> "timing" at the "Capture Timing Settings" window and tell us what audio settings are checked.
Timing
X Drop frames
X Insert null frames
_ Null frame burst rate

Resync Mode
_ Do not resync between audio & video
_ Sync video to audio
X Sync audio to video

_ Correct video timing
_ Automatically disable resync when integrated audio/video capture

Auto latency determination
X Automatic Number of audio block: 30
_ Fixed

Direct Show
X Use audio timestamps
_ Disable timestamps
_ Force audio clock
_ Ignore video timestamps

Quote:
M-Audio hardware is not known to be the best for maintaining constant sync. So that's one potential issue I see right away. Yes, M-Audio makes all sorts of nice high-end audio products, but the application is for audio only. When you add video to the mix, things change.
I moved audio from the Hauppauge USB-Live2 to the M-Audio Audiophile 2496 and the audio and video appear to be in sync on my first run through. I will play some more with the M-Audio card before going after a Turtle Beach Santa Cruz.

Quote:
Is that one of the all-black AVT-8710 units, which is known to have flawed chipsets? I doubt it's causing audio issues, but in theory it could cause delay issues. Have you done a process of elimination, and tried with that TBC for the moment, to troubleshoot sync problems?
Yes, it is the all-black one. I may be in sync now with the M-Audio card doing the audio rather than the Hauppauge USB-Live2.

Thanks for all the advice. I will keep learning, reading, and tweaking.
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Solution: VirtualDub audio sync for VHS! Micheal81 Capture, Record, Transfer 7 11-05-2015 06:26 AM
Audio out of sync after VirtualDub pinheadlarry Encode, Convert for streaming 23 12-20-2014 12:54 PM
VirtualDub audio sync issues? rds11 Capture, Record, Transfer 2 09-20-2014 01:48 PM
VirtualDub Audio/Video Sync Still An Issue? JasonCA Capture, Record, Transfer 1 01-31-2013 01:05 AM
Capturing VHS with VirtualDub - audio and video out of sync. avz10 Capture, Record, Transfer 3 01-13-2013 06:25 PM

Thread Tools



 
All times are GMT -5. The time now is 06:10 PM