v4l2-ctl -d /dev/video0 -i 1
The -d option of the v4l2-ctl command selects the videodevice, it is not needed if there is only one (/dev/video0) in the system.
The -i option selects/ changes the input channel of your device.
The v4l2-ctl utility is part of the v4l-utils package.
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With the "Qt V4L2 test utility" program (qv4l2) you can test switching the inputs.
In this program there is a drop down menu where you can select the different inputs while capturing.
I checked is much quicker open video source with any program and during channel change take screenshots.it can go up to 10fps total so 2-3 fps per camera so it is no so bad but software that playing video needs lot of cpu usage, need some lighter software or maybe capture from stream
ReplyDeleteit would be cool it someone could create app that will switch between outputs and create 4 separate streams...There is v4l2loopback I think it can be modified to create 4 separate output devices and make perframe switch. But it would be a little bit complicated for me... So maybe someone is interested in it ?
ReplyDeleteIt is not possible to use two easycaps to get two simultaneous video signals right?
ReplyDeleteHi edgar, I actually have a break from engaging myself in the easycap stuff, but I remember that it should be possible to use two easycaps side by side.
DeleteI have only one easycap but some time ago I used my easycap and another TV card on the same system successfully.
Andrew