Hi
I have a "ASUS WL-500g Premium" with two "Labtec Webcam Pro [0x46d/0x8a2]" cams.
I have tried several methods to get pictures from two cams in to jpg files.
1.)
Starting twice the spcacat for both cams in different directories:
cd /tmp/cam1
spcacat -d /dev/video0 -g -f jpg -s 640x480 -p 1000 -o > /dev/null &
cd /tmp/cam2
spcacat -d /dev/video1 -g -f jpg -s 640x480 -p 1000 -o > /dev/null &But the saved images have sometimes errors in the image (broken in the middle, false colours or other errors)
So I thought I access the halve written File through the web browser.
2.)
To compensate this I let the spcacat write continuous files:
cd /tmp/cam1
spcacat -d /dev/video0 -g -f jpg -s 640x480 -p 1000 > /dev/null &
cd /tmp/cam2
spcacat -d /dev/video1 -g -f jpg -s 640x480 -p 1000 > /dev/null &After a while I have al lot of saved images but sometimes the have also the errors in the files.
3.)
My new idea is to start the spcacat alternating in a script:
while [ 1 = 1 ]
do
###### CAM 1 BEGIN ######
if [ -e /dev/video0 ];
then
cd /tmp/cam1/
/usr/bin/spcacat -d /dev/video0 -g -f jpg -s 640x480 -N 1 -o
mv /tmp/cam1/SpcaPict.jpg /tmp/webcam1.jpg
fi
###### CAM 1 END ######
###### CAM 2 BEGIN ######
if [ -e /dev/video1 ];
then
cd /tmp/cam2/
/usr/bin/spcacat -d /dev/video1 -g -f jpg -s 640x480 -N 1 -o
mv /tmp/cam2/SpcaPict.jpg /tmp/webcam2.jpg
fi
###### CAM 2 END ######
doneThat works fine but had a very poor refresh rate.
The spcacat always test the device every loop.
For two cams it will approximately take 6 seconds.
It looks like the image errors occurs when two grabber using the same USB line at the same time.
So my question is now is there a way to tell the spcacat to skip the init test sequence or to force it to use pre selected pallets and size through parameters?
If not where I get the source code to alter the spcacat.
My wish is a config file like motion where I can describe two or more cams with different output files and maybe output size.
thanks Jakson