Video captures with no audio

keith314 wrote on 5/10/2003, 11:22 AM
I have a Canon Elura 2 and an OHCI compliant firewire card in a Windows 2000 system running on dual Pentium-3 1GHz processors with 7200RPM hard drives.

When I use Video Factory 1.0's capture utility (updated to the lastest available on the web), the capture utility doesn't seem to think there is any audio (i.e. the Audio Format field in the table is blank, whereas the video format is spelled out), but Windows Media Player plays the DV .AVI clip just fine with audio. But Video Factory doesn't show me the audio track at all. Vegas 3.0 and Sound Forge 6.0 also do not show the audio track.

What am I doing wrong?

Comments

Former user wrote on 5/10/2003, 11:37 AM
If you are hearing the audio after capture, then you are doing nothing wrong. The audio is a standard setting in a DV format, so there is no setting required for capture.

Dave T2
keith314 wrote on 5/10/2003, 12:26 PM
I can hear the audio ONLY if I play the AVI in Windows Media Player. But none of the Sonic Foundry tools seems to think there is audio. Even the GUI for the Video Capture tool says there is no audio.

Here is a zipped up example movie, if you want to see what I am talking about:

http://www.embeddedexcellence.com/smallmovie.zip
laz wrote on 5/11/2003, 6:42 AM
I too have probs with audio, and it's taking me ages to troubleshoot. This is a recent thing which has come out of the blue. It seems to occur when I 'save as' a project (a duplication) and edit the audio tracks as well as the video. I have a feeling it's a either a soundcard issue or hd probs, but not sure. Just this minute I tried to edit soundtrack in audio editor and pc froze and not even Crtl, Alt, Delete could unfreeze. i had to reboot and lost halfhours work.
You say you've updated to latest capture for v1 - the 2.0c build is for v2 I think (!)
JohnnyRoy wrote on 5/11/2003, 9:12 AM
Keith,

One example is worth a 1000 posts. ;-)

The clip in the ZIP file is DV Type I (interleaved video and audio stream) and Video Factory requires DV Type II (separate video and audio streams). Just go to the Ulead web site and download their free DV Converter. Once I converted it, the sound played fine in VideoFactory.

~jr
keith314 wrote on 5/11/2003, 12:11 PM
Thanks for that link, and for your investigative skill! I HATE debugging crap like this, but when it all works out in the end it's pretty cool :-)

But, something doesn't make sense. Why would the Video Factory require Type 2, and the capture tool that Video Factory uses create a Type 1 ?

JohnnyRoy wrote on 5/11/2003, 10:15 PM
That’s what I don’t understand. I wouldn’t have even suggested it was a DV Type problem before I saw your sample file. Perhaps someone from SoFo can explain.

~jr
Former user wrote on 5/12/2003, 8:14 AM
The Video Factory capture tool can be used as a standalone capture application. I guess they allow it to capture other types of files. Unfortunately, they don't explain this anywhere.

Dave T2
keith314 wrote on 5/12/2003, 8:57 PM
Ok, I tried it on a long, long DV file (55 minutes or so). At the 19 minute point, the Ulead-created DV-2 file goes berzerk in the audio and 12 minutes or so later the audio emerges again, but is off by about 250ms from the video. It happens again towards the end of the clip.

I almost want to cry. Any clues?

Here is a picture of what I am talking about:

http://www.embeddedexcellence.com/cry.png