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amihart
December 29th, 2017, 10:57 PM
I recently purchased a composite/component to USB capture device and Linux does not seem to detect its existence at all.
I believe it uses this (http://empiatech.com/wp/2828x-usb-grabber/) chip, which eMPIA claims has Linux support on the site.

However, Ubuntu doesn't seem to detect it at all, when I launch OBS I don't see it as an option and the only "/dev/video" device listed is video0 which is my webcam.
I'm guessing there's simply no support because I found this (https://www.linuxtv.org/wiki/index.php/USB_2828x#Making_it_Work) web page that says "Only audio is working with snd-usb-audio.".

Is there just no support for this at all and am I out of luck? I have the Windows driver but I don't suppose there's any way to install that on Linux, is there?
Even if it's some experimental unofficial driver that's better than nothing...

I don't know much about this kinda stuff so if anyone could help me out that would be nice.

#&thj^%
December 29th, 2017, 11:03 PM
It would help if we knew what it was. Perhaps a Link to that Device would/might help.
And do you see anything related to your device with:

lsusb

amihart
December 29th, 2017, 11:17 PM
It would help if we knew what it was. Perhaps a Link to that Device would/might help.
And do you see anything related to your device with:

lsusb
The device is just called "Gamecap" but the chip in it is the one I linked to which is the same chip used in a few other devices.
For lsusb the output for the device is

us 002 Device 003: ID eb1a:8285 eMPIA Technology, Inc.

If I do "lsusb -v" I get the same output for that Wiki page I linked to (https://www.linuxtv.org/wiki/index.php/USB_2828x), so I'm pretty confident that Wiki article is the same driver I need and that the eMPIA link is the correct chip.

#&thj^%
December 29th, 2017, 11:42 PM
If I do "lsusb -v" I get the same output for that Wiki page I linked to (https://www.linuxtv.org/wiki/index.php/USB_2828x), so I'm pretty confident that Wiki article is the same driver I need and that the eMPIA link is the correct chip.
Yep you was right. :(
Making it Work >>Only audio is working with "snd-usb-audio".
And I've seen no information for Video yet. (That dose not mean there isn't.)
maybe someone wiser will have better news.
Good Luck

deadflowr
December 30th, 2017, 06:10 PM
You can get a better idea of what's what by running dmesg against the driver like

dmesg | grep em28