Phantom Dropped Frames in DV Capture

mcwill wrote on 12/22/2001, 3:25 AM

I've just bought VV3 to create SVCDs from a PVR.

Capture is DV from a Hollywood DV-Bridge. (Much better than analogue but I digress..)

After each capture in VV3 Capture I'm seeing a dropped frame report even for very short captures

eg:

Frames dropped: 173
Session Length: 00:00:17.16
Average frame rate: 24.99 fps
Average data rate: 3.43 MB/Sec

The problem is, there don't appear to be any dropped frames in the capture. Also this was a 10 sec clip not a 17 sec clip.

I have abort capture on dropped frames enabled in the options but no abort occurred.

Any ideas?
Iain

Comments

deef wrote on 12/22/2001, 4:38 PM

This will be fixed for the next update, please see this post:

http://www.sonicfoundry.com/Forums/ShowMessage.asp?MessageID=85564

mcwill wrote on 12/23/2001, 3:12 AM

Thanks, I had skipped that post as I can't do batch capture with a hollywood dv bridge.

It was worrying at first but I'd since convinced myself that no frames were being dropped.

Anyway, great product and currently I'm only using 10% of it :-)

Iain

rstein wrote on 12/24/2001, 7:36 PM

I saw the same problems when testing out the Dazzle Hollywood bridge. Whether a 10 second or 30 minute capture, VV3 capture reported "dropped frames were detected." Yet on the live preview, the "dropped frame" count would always remain zero.

However, I noticed that after around 15 minutes of capture, the audio would begin to degrade. First a little scratchiness, then more, then it would sound like a screeching whine with any audio peak. By 20 minutes, the audio was unrecognizable.

The Dazzle Hollywood went back, and I bought a Sony camcorder to do the real-time A-D tranfers, which has never had a "dropped frame" nor the audio anomaly.

It's a pity, as the Hollywood would have saved me a few hundred bucks, but it just wasn't worth the aggravation.

Bob.

deef wrote on 12/27/2001, 9:21 AM

Unfortunately, this isn't the first time I've heard this...fortunately, tho' your Sony works great...not all "DV devices" are the same nor do they function as such...that said, we do try to be DV generic and handle as much of the quirkiness as possible so that most of these devices function successfully.