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48 45 58

Member

Registered: 2024-01-02

Posts: 2

USBTV007 shows only darkness

Hi,
I've found an old camera with S-Video output and I've wanted to try it with Easy CAP to give it a new purpose, but I'm unable to get anything from it.

On windows it worked after installation of some drivers from some random website.
Linux should have drivers for this device in kernel so it should work at first try, but it wont. All I can see is darkness.

 # dmesg -Tw
[Tue Jan  2 22:23:48 2024] usb 1-10: new high-speed USB device number 4 using xhci_hcd
[Tue Jan  2 22:23:48 2024] usb 1-10: config 1 interface 0 altsetting 1 bulk endpoint 0x83 has invalid maxpacket 256
[Tue Jan  2 22:23:48 2024] usb 1-10: New USB device found, idVendor=1b71, idProduct=3002, bcdDevice= 1.00
[Tue Jan  2 22:23:48 2024] usb 1-10: New USB device strings: Mfr=3, Product=4, SerialNumber=2
[Tue Jan  2 22:23:48 2024] usb 1-10: Product: usbtv007
[Tue Jan  2 22:23:48 2024] usb 1-10: Manufacturer: fushicai
[Tue Jan  2 22:23:48 2024] usb 1-10: SerialNumber: 300000000002
[Tue Jan  2 22:23:49 2024] mc: Linux media interface: v0.10
[Tue Jan  2 22:23:49 2024] videodev: Linux video capture interface: v2.00
[Tue Jan  2 22:23:49 2024] usbtv 1-10:1.0: Fushicai USBTV007 Audio-Video Grabber
[Tue Jan  2 22:23:49 2024] usbcore: registered new interface driver usbtv

 $ vlc --verbose 3
[00007f9b5ca44c60] deinterlace filter error: unknown or incompatible deinterlace mode "x" for packed format

I tried to search but I was unable to find anything useful.

Can you help me or at least point me somewhere?

Last edited by 48 45 58 (2024-01-03 13:36:45)

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I'm a noob, but I like to learn. I don't know everything, so please be kind.

48 45 58

Member

Registered: 2024-01-02

Posts: 2

Re: USBTV007 shows only darkness

I've tried a few other things. Some were suggested by ChatGPT.

I do have the v4l-utils package installed, so I checked if I could see the device.

$ v4l2-ctl --list-devices
usbtv (usb-0000:15:00.0-10):
        /dev/video0

I have loaded the uvcvideo kernel module.

# modprobe uvcvideo

I can see the controls of the device.

$ v4l2-ctl -d /dev/video0 --list-ctrls

User Controls

                     brightness 0x00980900 (int)    : min=0 max=1023 step=1 default=448 value=448 flags=slider
                       contrast 0x00980901 (int)    : min=0 max=1023 step=1 default=464 value=464 flags=slider
                     saturation 0x00980902 (int)    : min=0 max=1023 step=1 default=512 value=512 flags=slider
                            hue 0x00980903 (int)    : min=-3583 max=3583 step=1 default=0 value=0 flags=slider
                      sharpness 0x0098091b (int)    : min=0 max=255 step=1 default=96 value=96 flags=slider

I've added my user to the video group.

# usermod -aG video HEX

I've tried using ffvideo.

$ ffplay /dev/video0

Still only darkness

Last edited by 48 45 58 (2024-01-03 13:36:16)

---

I'm a noob, but I like to learn. I don't know everything, so please be kind.