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Audio has tiny dropouts when capturing DV

by Cycleman / October 19, 2006 1:01 PM PDT

The DV CC is a Canon Optura 600. Computer: HP a730n, 200 Gb HD, 3 GHz, XP, 1 Gb RAM.

Software for capture: Ulead Movie Factory 3. I'm using a firewire.

Burning a DVD is not an issue.

When I captured a video (full tape), the audio has small, intermittent "dropouts." This is my way of describing missing bits of sound from the tape.

When I play the tape (it was produced on another DV camcorder...don't know the brand) and pipe it through a t.v., the audio sound fine (when I play it through the Optura).

I am capturing the avi to an external hard drive.

Could the external HD be the source of the dropouts? That is, if the drive can't write fast enough?

The video looks okay. I have no problem burning the project to a DVD.

What might be the issue with the dropouts?



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My guess. Drop outs on the tape.
by Kiddpeat / October 19, 2006 1:30 PM PDT

The audio stream is pretty small compared to the video stream. It's unlikely that your computer could cleanly capture the video, but drop bits of audio. Does your capture software report any missed data? Of course, if you are running anything else during a capture, including screen savers, you could have a problem.

More likely is that the computer plays things back a bit more slowly because its processing all the data to build the audio. That makes the gap more audible. So, the drop outs may be on the tape, but not very noticeable when the tape is output to a TV.

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Usually a tape issue.
by R. Proffitt Forum moderator / October 20, 2006 12:05 AM PDT

But the speed of an external is a fraction of the internal drives. Why not do the test to figure it out?

I would use WINDV for capture since it's small, fast and easy to tell where to put the files.

This will also help sort out if it's a Ulead software issue.


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Definitely a tape issue
by Cycleman / October 24, 2006 10:09 AM PDT
In reply to: Usually a tape issue.

I used WinDVD, as you suggested. The tape capture behaves the same as with the ULead, so I'm convinced it must the tape.

Also, I captured it to the main hard drive, so it should have gone as smoothly as possible.

Thanks for the tips.

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WINDV is not WinDVD.
by R. Proffitt Forum moderator / October 24, 2006 10:15 AM PDT

WINDV is free, small, fast etc.


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Oops, you're right.
by Cycleman / October 24, 2006 12:35 PM PDT
In reply to: WINDV is not WinDVD.

But, I have/own WinDVD, and it works okay for this operation. I'll get the free one, too.

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just looking for clarification:
by boya84 / October 20, 2006 6:16 AM PDT

When you playback in the camera the audio is OK.

When you connect the camera to a TV and playback, the audio is OK.

When you export to disc and play that back the audio is OK

This is where is gets a little hazy for me: When you have already imported the video to the computer the audio is OK in uLead... But when you are importing the video, that is when the audio drops out?


1) What connection is the external drive using? USB1, USB2 or FireWire? SCSI?

2) What kind of drive is the external drive? Portable drives (2.5" drives) can do as slow as 5400 RPM while 3.5" externals can do much faster.

3) Is there anything else on the external drive or just this project? File fragmentation *might* impact playback.

4) Is there room to copy the video project to the internal drive and see if the problem follows?

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Late reply
by Cycleman / October 24, 2006 12:34 AM PDT

Sorry for the late reply....

Yes, the audio seems okay when I play back in the camera.
It's also okay when I connect to a t.v. and playback through it.

When I export to the disc, it's not okay. When I play back the avi that I've captured, it's also not okay.

Yes, it's when I import the video that the audio is not okay.

Now, to the numbered questions:

The connection of the camera to the computer is Firewire, but the external drive is USB2. Maybe this is a source of audio dropouts?? I am going to try the capture directly to the main drive. I have the room.

The external drive is a 3.5" internal drive, in a enclosure.

There are data files on the external drive.

Both you and Bob's suggestions will be tried. I'll report back the results as soon as I can.

Thanks to both for your help.


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