Frame dropping on DV capture

[joelson]

Hi!

I've captured a footage from a DV camera. It generated a WMV file in my computer.

After authoring and generating a DVD, I noticed some "jumps" on the image, that I guess it's frame dropping.

I haven't seen when it happened, I mean, if it was after capturing, or during the conversion to DVD format.

My questions are:

1) Is this a frame dropping problem?

2) Does it happened during capturing, or it may happen on conversion to DVD format?

Thanks in advance!

[troyvcd1]

If your captured video is an wmv file then your doing something wrong when you capture. Your captured file should be an avi file.

[redwudz]

Certainly it's a problem if you are dropping frames. Are you transferring the DV from your camera with a Firewire interface? There is no capture' in that case. It's just a simple data transfer, same as any data between drives on a computer. Should be no losses.

You need to see if the DV is dropping frames. If so, that is a Firewire or computer problem. Are you using WMM for transfer? If so, try DVIO or WinDV. Then edit that DV file and encode it to DVD compliant video.

You can view the transferred DV (Type 2) by using the Panasonic DV codec and Virtualdub. What you describe sounds more like an encoding problem, but checking the DV file will probably tell you that.

[SoupStain]

redwudz,

A DV transfer is not exactly the same as a file transfer between two drives of a computer. The camera simply streams the data out and if the computer can't keep up it will drop frames - the computer can't control the transfer rate or ask for a frame to be resent.

[edDV]

Hi!

I've captured a footage from a DV camera. It generated a WMV file in my computer.

After authoring and generating a DVD, I noticed some "jumps" on the image, that I guess it's frame dropping.

I haven't seen when it happened, I mean, if it was after capturing, or during the conversion to DVD format.

My questions are:

1) Is this a frame dropping problem?

2) Does it happened during capturing, or it may happen on conversion to DVD format?

Thanks in advance!

1) Hard to say but you should not capture to the default wmv* if DVD is your goal. You should be "capturing" to DV-AVI (the second menu choice) and you should be using the IEEE-1394 cable. Edit in DV format and save the project in DV-AVI format. Next you would compress the DV-AVI file to MPeg2 in a DVD authoring program.

* default wmv is 640x480 and compressed. DVD requires MPeg2 at 720,704 0r 356 by 480.

2) Can't tell. Try using DV-AVI and see if that solves your problem.
Also let us know how you are authoring the DVD. Many authoring programs allow direct DV-AVI import.

[joelson]

Hi guys,

Thanks for all the help!

I've captured the footage using Windows Movie Maker. As I told, I used wmv extension.

About edDV's question, I've put this wmv file directly on the authoring program, which is Ulead DVD MovieFactory, and let it convert and author.

Does it answer your questions about my problem?