[mythtv-users] /dev/video0 - Device or ressource busy

[Matthew Mead]

When I try

cat /dev/video0 >test.mpg

I get:

cat: /dev/video0: invalid argument

as root or as mythtv

but if I run xawtv I can get a image and sound just fine once I change it
from PAL to NTSC.


----- Original Message ----- 
From: "Travis" <travs at wsor.net>
To: "'Discussion about mythtv'" <mythtv-users at mythtv.org>
Sent: Sunday, May 23, 2004 12:52 AM
Subject: RE: [mythtv-users] /dev/video0 - Device or ressource busy


> > -----Original Message-----
> > From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
> > bounces at mythtv.org] On Behalf Of Matthias Meyer
> > Sent: Saturday, May 22, 2004 11:24 PM
> > To: mythtv-users at mythtv.org
> > Subject: [mythtv-users] /dev/video0 - Device or ressource busy
> >
> > Hello,
> >
> > I running debian, have installed MythTV 0.14-6 and use a PVR350.
> > Within some hard weeks I have load channels (the right one?) and
> > television-program with tv_grab_de_tvtoday from xmltv 0.5.33-1.
> >
> > I try "cat /dev/video0 > test.mpg" and see it will work without error
> > message.
> > So I abort it and start mythfrontend to try watch TV. But see the
> > /var/log/mythtv/mythbackend.log:
> > QSettings: error creating /.qt
> > Starting up as the master server.
> > 2004-05-22 22:41:50 mythbackend version: 0.14.20040123-1 www.mythtv.org
> > 2004-05-22 22:41:50 Enabled verbose msgs : important general
> > 2004-05-22 22:41:53 Found changes in the todo list.
> > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 1)
> > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a remote ringbuffer
> > 2004-05-22 22:43:25 Changing from None to WatchingLiveTV
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> > read: Device or resource busy
> > error reading from: /dev/video0
> >
> > ...and I only can see a black screen.
> > --
> > no panic
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
> A little more info might help isolate the problem.
>
> > I try "cat /dev/video0 > test.mpg" and see it will work without error
> > message.
>
> 1) Does, mplayer play test.mpg fine after you stop the capture?
>
> 2) You're capturing as user mythtv, right?
>
> -- Travis
>
>


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