Do your webcam has build in mic? Do you use this mic with skype?
If yes. Can you please do fallowing test. Start your webcam with
luvcview or guvcview and start the attached script.
edid the script and replace device name to yours. my is
alsa_input.usb-046d_0991_9671DCEE-02-U0x46d0x991.analog-mono
you can find proper name with this command:
pacmd list | grep alsa_input
with this script we can try to reproduce skype behavior.
Am 11.11.2011 18:26, schrieb Edwin Aponte:
Finally, I could do the network test in the school.
When the computer freezes completely some time after having loaded skype
using:
env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype\
and been using the web-cam in skype, I cannot ssh it neither ping it.
Also, the camera works well with luvcview (I used luvcview to get the
frames that I attached in my first post)
Regards.
On Wed, 2011-11-02 at 17:49 +0100, Laurent Pinchart wrote:
Hi Edwin,
On Saturday 22 October 2011 00:36:14 Edwin Aponte wrote:
libv4l2 is giving having problems with a Microsoft LifeCam NX-6000
webcam (045e:00f8). I have to run skype as below to get the webcam
working well for a moment, though an error is generated, until the
system freezes completely after some minutes and even SysRq doesn't
work.
Those two problems are likely unrelated, and the second one is pretty bad. Is
your machine connected to a network ? Can you still ping it after it freezes ?
What about ssh ?
env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype
libv4l2: error converting / decoding frame data: v4l-convert: error
parsing
JPEG header: Not a JPG file ?
Your camera seems to produce bad MJPEG frames. From the log you've attached it
seems that the first frame is bigger than the next ones. This might be
related. Could you try luvcview, which doesn't use libv4l ?
Sometimes, I get the same error with the program webcam:
--------------------------
~> webcam
reading config file: /home/edwinh/.webcamrc
video4linux webcam v1.5 - (c) 1998-2002 Gerd Knorr
grabber config:
size 320x240 [none]
input (null), norm (null), jpeg quality 75
rotate=0, top=0, left=0, bottom=240, right=320
libv4l2: error converting / decoding frame data: v4l-convert: error
parsing
JPEG header: Not a JPG file ?
v4l2: read: Input/output error
capturing image failed
-------------------------
and some times this other error:
-------------------------
~> webcam
reading config file: /home/edwinh/.webcamrc
video4linux webcam v1.5 - (c) 1998-2002 Gerd Knorr
grabber config:
size 320x240 [none]
input (null), norm (null), jpeg quality 75
rotate=0, top=0, left=0, bottom=240, right=320
libv4lconvert: Error decompressing JPEG: fill_nbits error: need 1 more
bits
-------------------------
I have attached some information based on this thread
http://lists.berlios.de/pipermail/linux-uvc-devel/2008-November/004265.html
that seems to be a similar case of my problem.
I set the trace level to 255:
# echo 255> /sys/module/uvcvideo/parameters/trace
and I record a frame using:
~> luvcview -f mjpg -c
and after that I saved the output of dmesg.
Thanks.
_______________________________________________
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
#!/bin/bash
while (echo 1); do
for i in $(seq 1 65); do
pacmd set-source-volume
alsa_input.usb-046d_0991_9671DCEE-02-U0x46d0x991.analog-mono $(( $i * 1000 ));
done
sleep 1;
done
_______________________________________________
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
