Patrick Lists wrote:
On 07/17/2013 06:54 PM, m.roth@5-cent.us wrote: [snip]
Have you tried with mplayer? Do the export, then: mplayer tv:// -tv driver=v4l2:device=/dev/video0:width=320:height=240
Mplayer complained about some missing vdpau lib so that did not work out but I tried svv from moinejf.free.fr and got the same results as previously described.
Yeah, that's annoying. I solved it by export LD_PRELOAD=/usr/lib64/libvdpau.so.1:/usr/lib64/libv4l/v4l2convert.so
and see what you see. The idea is to try a different viewer.
From digging in my mail archives the error in /var/log/messages was:
Jan 3 17:37:10 luna kernel: [ 7358.087971] gspca: ISOC data error: [62] len=0, status=-71
That was on Fedora 14 with kernel 2.6.35.10-74.fc14.x86_64 and the id of the webcam is: Logitech Orbicam 046d:0896
The patch that fixed it is:
$ cat gspca-sensor.patch diff -uNr gspca-2.13.3.org/build/vc032x.c gspca-2.13.3/build/vc032x.c --- gspca-2.13.3.org/build/vc032x.c 2011-01-15 09:46:40.000000000 +0100 +++ gspca-2.13.3/build/vc032x.c 2011-07-28 18:16:41.138640918 +0200 @@ -3716,9 +3716,9 @@
sensor = vc032x_probe_sensor(gspca_dev);//vish -// if (sd->sensor == SENSOR_POxxxx -// && sensor == SENSOR_PO3130NC) -// sensor = sd->sensor;
if (sd->sensor == SENSOR_POxxxx
&& sensor == SENSOR_PO3130NC)sensor = sd->sensor;switch (sensor) { case -1:
Hmmmm, I'm a bit confused: it looks as though the commented out lines are identical to the new lines; and as there's no + in front of it, it looks as though the statement to set sensor was there before... so I don't get the difference.
I can see the plusses fine but maybe something got mangled so here's what is prepended with a "+":
if (sd->sensor == SENSOR_POxxxx sensor == SENSOR_PO3130NC) sensor = sd->sensor;
Just checked git.linuxtv.org where the latest vc032x.c code lives and it has changed such that this patch no longer applies. My C foo is not at kernel driver level so I'll leave it at that and just use one of the webcams in my bag.
Sorry I couldn't help more.
mark