Troubleshooting • Re: USB Camera Detects but video won't work?

As it says it hasn't found a USB camera....

Try this and show me the output

Code:

   # find USB cameraimport osx = 0while x < 42:    txt = "v4l2-ctl -d " + str(x) + " --list-ctrls > /run/shm/cam_ctrls.txt"    os.system(txt)    ctrls = []    with open("/run/shm/cam_ctrls.txt", "r") as file:        line = file.readline()        while line:            ctrls.append(line)            line = file.readline()    print(x,ctrls)     x += 1 

Yeah Image may be NSFW.
Clik here to view. thanks though, let me try that!
Here is the output:
Cannot open device /dev/video0, exiting.
0 []
Cannot open device /dev/video1, exiting.
1 []
Cannot open device /dev/video2, exiting.
2 []
Cannot open device /dev/video3, exiting.
3 []
Cannot open device /dev/video4, exiting.
4 []
Cannot open device /dev/video5, exiting.
5 []
Cannot open device /dev/video6, exiting.
6 []
Cannot open device /dev/video7, exiting.
7 []
Cannot open device /dev/video8, exiting.
8 []
Cannot open device /dev/video9, exiting.
9 []
Cannot open device /dev/video10, exiting.
10 []
Cannot open device /dev/video11, exiting.
11 []
Cannot open device /dev/video12, exiting.
12 []
Cannot open device /dev/video13, exiting.
13 []
Cannot open device /dev/video14, exiting.
14 []
Cannot open device /dev/video15, exiting.
15 []
Cannot open device /dev/video16, exiting.
16 []
Cannot open device /dev/video17, exiting.
17 []
Cannot open device /dev/video18, exiting.
18 []
19 ['\n', 'Stateless Codec Controls\n', '\n', ' hevc_sequence_parameter_set 0x00a40a90 (unknown): type=270 value=unsupported payload type flags=has-payload\n', ' hevc_picture_parameter_set 0x00a40a91 (unknown): type=271 value=unsupported payload type flags=has-payload\n', ' slice_param_array 0x00a40a92 (unknown): type=272 dims=[4096] flags=has-payload, 0x00000800\n', ' hevc_scaling_matrix 0x00a40a93 (unknown): type=273 value=unsupported payload type flags=has-payload\n', ' hevc_decode_parameters 0x00a40a94 (unknown): type=274 value=unsupported payload type flags=has-payload\n', ' hevc_decode_mode 0x00a40a95 (menu) : min=0 max=0 default=0 value=0 (Slice-Based)\n', ' hevc_start_code 0x00a40a96 (menu) : min=0 max=1 default=0 value=0 (No Start Code)\n']
20 []
21 []
22 []
23 []
24 []
25 []
26 []
27 []
28 []
29 []
30 []
31 []
32 []
33 []
34 []
35 []
36 []
37 []
Cannot open device /dev/video38, exiting.
38 []
Cannot open device /dev/video39, exiting.
39 []
Cannot open device /dev/video40, exiting.
40 []
Cannot open device /dev/video41, exiting.
41 []

Statistics: Posted by MooCow27 — Thu Aug 08, 2024 4:56 pm

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