Dropped frames...

StormMarc wrote on 10/13/2003, 11:53 PM

I'm periodically getting dropped frames on captures even though my video drive is defragemented with over 60 gigs of free space. If I recapture the tape sometimes it's better and sometimes it's the same.

I have a decent system:

P4 2.2, I gig ram, 60gig system and (4) 120 gig WD 8 meg buffer drives. Raden 128 graphics card. This is the same system I have my Storm card on and never get dropped frames. Norton is not installed and nothing special running in background. I also turned off preview audio/video in capture tool. I'm using a Sony WVDR7 deck. Any ideas? Could this be a timecode issue on the tapes (tapes we're recorded on a PD-150)?

Thanks,

Marc

Comments

GaryKleiner wrote on 10/14/2003, 2:01 AM

Most people seem to solve this problem when they switch to a different 1394 card.

Gary

StormMarc wrote on 10/14/2003, 2:53 AM

I'm using a pyro. Do you think it might be defective? I also get the jitters periodically even when playing back rendered material to an external monitor routed through my Sony deck.

Thanks,

Marc

Caruso wrote on 10/14/2003, 3:03 AM

I'd still be checking for drivers and such that might be competing for processor attention. Your system has more than twice the horespower as mine, and, except for questionable source media (discontinuous analog 8mm captured through the digi8 cam), I never get dropped frames.

What mouse/mouse driver are you using? Try deleting it and allowing the OS to detect and supply a generic driver. This once solved a similar problem for me.

Good luck.

Caruso

craftech wrote on 10/14/2003, 7:11 AM

Try using the camera as the source instead of the deck and see if the problem goes away. If it does you may have a deck transport problem or the playback head may need cleaning especially if you have switched brands of tapes played in it.

Also, read through these suggestions:

http://www.custcenter.com/cgi-bin/sonypictures.cfg/php/enduser/std_adp.php?p_sid=RDNJ*gVg&p_lva=&p_faqid=306&p_created=989816400&p_sp=cF9zcmNoPTEmcF9ncmlkc29ydD0mcF9yb3dfY250PTI4JnBfc2VhcmNoX3RleHQ9Y2FwdHVyZSZwX3NlYXJjaF90eXBlPTMmcF9wcm9kX2x2bDE9MTcmcF9wcm9kX2x2bDI9fmFueX4mcF9jYXRfbHZsMT1_YW55fiZwX3BhZ2U9MQ**&p_li=

John

johnmeyer wrote on 10/14/2003, 11:41 AM

I assume you have check disk DMA ...

StormMarc wrote on 10/14/2003, 9:13 PM

Thanks for all the suggestions. Mouse driver is generic microsoft and DMA is checked. I'll go through the suggestion page and check everything.

Thanks,

Marc

Spot|DSE wrote on 10/14/2003, 11:42 PM

Definitely not the pyro card, I'd suggest:
Reducing preview window to smallest size in capture tool
Checking for background apps, including network connections
Checking for shared IRQ's, specifically looking for sound card and/or video graphics card
loose firewire connection
DMA enabled

those are the primary culprits.

StormMarc wrote on 10/15/2003, 2:20 AM

Thanks Sopt.

It is connected to a network. Should I temp. unplug the cable when capturing? Could this be where I get my jitter problems when playing back video even though no frames are dropping? I also have a Storm card on this system and am wondering if perhaps that is causing conflicts. It actually shows up in Vegas as a choice in the capture tool. I'll check the IRQ etc again but because of the Storm card I had limited options on where to put my firewire card.

Thanks,

Marc

craftech wrote on 10/15/2003, 4:13 AM

A change in PCI slots for the capture card may help.

John