I just got a new Panasonic PV-GS80 MiniDV camcorder and am trying to
capture the DV for editing in Kino. I am able to view the video
smoothly on the camera's LCD and capture video over firewire, but it
comes in at very poor quality. I am running Gutsy on a 2GHz proc and
512MB of RAM so I don't think insufficient resources are the problem. I
am using firewire via a PCMCIA add-on card.<br>
<br>
When I capture with dvgrab, I get a lot of the following messages:<br>
"dvgrab-008.avi": buffer underrun near: timecode 00:01:45.07 date 2007.10.30 19:14:31<br>
This error means that the frames could not be written fast enough.<br>
<br>
This seems to indicate that my hard disk is too slow? It is a 160GB laptop drive less than 6 months old. <br>
<br>
There seemed to be problems with DMA not working for some hard disks
back in Feisty, and I see that DMA is not turned on for /dev/sda1. It
also seems to be impossible to turn DMA on. When I try sudo hdparm -d1
/dev/sda1 I get the error:<br>
/dev/sda1:<br>
setting using_dma to 1 (on)<br>
HDIO_SET_DMA failed: Inappropriate ioctl for device<br>
<br>
I think I have all of the proper modules loaded for dv:<br>
lsmod | grep 1394<br>
video1394 19800 0 <br>
dv1394 20824 0 <br>
raw1394 31096 0 <br>
ohci1394 36528 2 video1394,dv1394<br>
ieee1394 96312 4 video1394,dv1394,raw1394,ohci1394<br>
<br>
I've reached the limits of my troubleshooting, so if anyone else has any ideas I'd love to hear them.<br>