Show Composite/CVBS Video-In signal on screen (using USB-Framegrabber)

Hello to all users of this superb community!

I want so use Odroid-C2/LibreELEC as 4k-Media player. This is working really fine! Thanks to all involved to this!
In addition i want to be able to watch analog composite video using a Composite Video grabber. LogiLink® USB 2.0 Audio and Video Grabber
The right modules for the "USB-Composite grabber" are being loaded:
if i do "ls -la" in dev i get the needed line:

crw-rw-r--    1 root     video      81,   0 Aug 22 15:24 video0

found this via google - but this does not work sadly (no playable file can be found)

Quote

create a file called Video-In.strm with this content:

/dev/video0

and launch file via videos

i can use this as framegrabber for hyperion with the following config - working fine!:

"grabber-v4l2" :
        {
                "device" : "/dev/video0",
                "input" : 0,
                "standard" : "PAL",
                "width" : -1,
                "height" : -1,
                "frameDecimation" : 2,
                "sizeDecimation" : 4,
                "priority" : 800,
                "mode" : "2D",
                "cropLeft" : 10,
                "cropRight" : 8,
                "cropTop" : 12,
                "cropBottom" : 19,
                "redSignalThreshold" : 0.4,
                "greenSignalThreshold" : 0.2,
                "blueSignalThreshold" : 1.0
        },

but where/how to put these parameters for video playback? Video-In.strm?