Comments

sdmoore wrote on 6/23/2003, 7:26 AM
Hi Rod,

This can be a very common and frustrating problem if your system is not perfectly setup. There are many things that can be causing this. The best advice at the moment would be to do a search on these forums for 'dropped frames' - you'll find many posts about this with many more suggestions on how to fix it.

Cheers,

Scott
mikkie wrote on 6/23/2003, 9:59 AM
Please search as Scott wrote, plus wouldn't hurt to list a bit more info like OS etc...
rodmichael wrote on 6/26/2003, 7:57 PM
Thanks for your responses. But I did a search on "dropped frames". The apparent knowledge base and the number of posts was quite small.

In response to "mikkie", my system is a P4, 2.5GHz with 1GB DRAM running Win XP Pro. I'm putting my media on a dedicated, defragmented 160GB Medea SCSI RAID. No other applications running. I've turned off audio and video preview. I get about 15% to 20% dropped frames based on a simple calculation of 10 minutes x 30 fps=18,000 frames with about 2500 dropped frames. My system is part of a home network.

Any more thoughts from anyone?

Thanks.
Chienworks wrote on 6/26/2003, 8:01 PM
Try unplugging the network cable next time you capture.
mikkie wrote on 6/27/2003, 10:11 AM
There have been a number of posts re: prob with various firewire cards, drivers and such, and I would look at your firwire set up first as all you're really doing is transfering data from one place to another - not so intensive as analog capture.

There's a list of cards on the sofo site that are compatible - the number of drops you're getting sounds like this might be the prob., so might want to try other software to see what happens during capture/transfer.

Might also want to try removing, reinstalling your firewire card/port to make sure xp has a good install, might want to disable you firewire port as a network device in XP, might want to try transferring to another drive rather then the raid. Could also go here to check out the info on services running in xp pro http://www.blackviper.com/index.html . Otherwise would just check on your system in general, making sure everything's working right, that you don't have a bunch of other apps running during capture, that you're not infected, that sort of thing.
ana_geobel wrote on 6/27/2003, 6:39 PM
I am having the same problem with dropped frames. I don't know what to do. I have closed all background programs, I have defragmented, i have enabled DMA.

I don't know what else I can possibly do.
rodmichael wrote on 6/29/2003, 4:03 PM
Well, I think I discovered the genesis of my problem (probably DVEditing 101 for most of you on this forum).

As I said in my initial post, I' capturing analog AV using the ADS Pyro A/V Link. There are 4 switches on the back that have to be set when capturing. Switch #1 is for the audio sampling rate. I had it set for 16 bit audio. When I set it for 12 bit audio I stopped dropping frames.

Does that make sense?

Thanks for everyone's advice.

Rod Michael
rodmichael wrote on 6/29/2003, 4:27 PM
Oops!!!. Spoke too soon. Problem not fixed. Did seem too easy and I really couldn't figure the connection between the audio sampling rate and dropped frames.
DavidNJ wrote on 6/30/2003, 12:33 AM
Using Demo version...ordering real version tomorrow. Fast system, 2.4Mhz overclocked to 2.875 with 160 FSB, 426 Dual Channel DDR, Dual IDE 100 WD200JB (8MB Cache).

No other programs...but still network connected. Drives defragmented. Losing 500-1500 frames per tape (90 minutes), or about 1%.

I especially concerned because I would like to get DVX100, and I understand any dropped frames prevent a successful 24p capture.