kino - non-linear DV video editor

Mark Phillips | 7 Dec 2010 16:39

dvgrab does not write an output file

I have been trying to get dvgrab (v 1.3.4) to work with my Debian testing (Linux version 2.6.32-5-amd64 (Debian 2.6.32-28) (ben <at> decadent.org.uk) (gcc version 4.3.5 (Debian 4.3.5-4) )) and I can't seem to get it to grab the video from my camera over firewire. It starts the camera says it is grabbing video, but never writes a file with the video to my hard disk. Running dvgrab as a normal user occasionally gives me a segmentation fault. Even running it as root does not create an output file.

A typical run:
orca:/home/mark/Movies/Savage/

clips# dvgrab -f dv2 foo-
Found AV/C device with GUID 0x0800460102561c47
Waiting for DV...

"": damaged frame near: timecode ??:??:??.?? date ????.??.?? ??:??:??
This means that there were missing or invalid FireWire packets.

......quite a few of these as the camera starts and comes up to speed. Once the camera is up to speed, they stop. I assume (perhaps incorrectly?) that these are just due to the camera motor coming up to speed. After running for a minute and no error messages I hit ctrl-C and get this:

^C"": 0.00 MiB 0 frames timecode 00:00:00.00 date 2010.12.05 09:10:52
Capture Stopped
Warning: 151 damaged frames.

Thanks!

Mark

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Carl Karsten | 7 Dec 2010 19:39

Re: dvgrab does not write an output file

On Tue, Dec 7, 2010 at 9:39 AM, Mark Phillips <mark <at> phillipsoasis.com> wrote:
> I have been trying to get dvgrab (v 1.3.4) to work with my Debian testing
> (Linux version 2.6.32-5-amd64 (Debian 2.6.32-28) (ben <at> decadent.org.uk) (gcc
> version 4.3.5 (Debian 4.3.5-4) )) and I can't seem to get it to grab the
> video from my camera over firewire. It starts the camera says it is grabbing
> video, but never writes a file with the video to my hard disk. Running
> dvgrab as a normal user occasionally gives me a segmentation fault. Even
> running it as root does not create an output file.
>
> A typical run:
> orca:/home/mark/Movies/Savage/
> clips# dvgrab -f dv2 foo-

Try just dvgrab (no parameters)

It will name the file dvgrab-001.dv

if still nothing, run dmesg|tail, post if it looks relevant.

--

-- 
Carl K

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Stefan Richter | 7 Dec 2010 20:17

Re: dvgrab does not write an output file

On Dec 07 Carl Karsten wrote:
> On Tue, Dec 7, 2010 at 9:39 AM, Mark Phillips <mark <at> phillipsoasis.com> wrote:
> > I have been trying to get dvgrab (v 1.3.4) to work with my Debian testing
> > (Linux version 2.6.32-5-amd64 (Debian 2.6.32-28) (ben <at> decadent.org.uk) (gcc
> > version 4.3.5 (Debian 4.3.5-4) )) and I can't seem to get it to grab the
> > video from my camera over firewire. It starts the camera says it is grabbing
> > video, but never writes a file with the video to my hard disk. Running
> > dvgrab as a normal user occasionally gives me a segmentation fault. Even
> > running it as root does not create an output file.
> >
> > A typical run:
> > orca:/home/mark/Movies/Savage/
> > clips# dvgrab -f dv2 foo-
> 
> Try just dvgrab (no parameters)
> 
> It will name the file dvgrab-001.dv
> 
> if still nothing, run dmesg|tail, post if it looks relevant.

If the camcorder is not in playback mode, try dvgrab -noavc.
--

-- 
Stefan Richter
-=====-==-=- ==-- --===
http://arcgraph.de/sr/

------------------------------------------------------------------------------
What happens now with your Lotus Notes apps - do you make another costly 
upgrade, or settle for being marooned without product support? Time to move
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Mark Phillips | 7 Dec 2010 20:45

Re: dvgrab does not write an output file

One more piece of the puzzle. I rebooted my computer into Windows 7, plugged the camera into the same firewire port, and captured 50 minutes of video and audio from the same tape with no errors or dropped frames. So at least I can report that all the hardware is working. As soon as I finish capturing the second 50 minute tape, I will go back to Linux and try your suggestions. Too bad VMPlayer does not support firewire, or I could do all of this without rebooting!

Mark

On Tue, Dec 7, 2010 at 12:17 PM, Stefan Richter <stefanr <at> s5r6.in-berlin.de> wrote:

On Dec 07 Carl Karsten wrote:
> On Tue, Dec 7, 2010 at 9:39 AM, Mark Phillips <mark <at> phillipsoasis.com> wrote:
> > I have been trying to get dvgrab (v 1.3.4) to work with my Debian testing
> > (Linux version 2.6.32-5-amd64 (Debian 2.6.32-28) (ben <at> decadent.org.uk) (gcc
> > version 4.3.5 (Debian 4.3.5-4) )) and I can't seem to get it to grab the
> > video from my camera over firewire. It starts the camera says it is grabbing
> > video, but never writes a file with the video to my hard disk. Running
> > dvgrab as a normal user occasionally gives me a segmentation fault. Even
> > running it as root does not create an output file.
> >
> > A typical run:
> > orca:/home/mark/Movies/Savage/
> > clips# dvgrab -f dv2 foo-
>
> Try just dvgrab (no parameters)
>
> It will name the file dvgrab-001.dv
>
> if still nothing, run dmesg|tail, post if it looks relevant.

If the camcorder is not in playback mode, try dvgrab -noavc.
--
Stefan Richter
-=====-==-=- ==-- --===
http://arcgraph.de/sr/

------------------------------------------------------------------------------
What happens now with your Lotus Notes apps - do you make another costly 
upgrade, or settle for being marooned without product support? Time to move
off Lotus Notes and onto the cloud with Force.com, apps are easier to build,
use, and manage than apps on traditional platforms. Sign up for the Lotus 
Notes Migration Kit to learn more. http://p.sf.net/sfu/salesforce-d2d

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