I am trying to stream multiple USB cameras in Orange pi 5+, but I am getting the error:
ffmpeg -f v4l2 -input_format mjpeg -video_size 640x480 -i /dev/video3 -c:v copy output2.mp4 # One process successfully started, but calling this a second time doesn't work:
...
[video4linux2,v4l2 @ 0xaaab1ddcdbc0] ioctl(VIDIOC_STREAMON): No space left on device
/dev/video3: No space left on device
dmesg displays this:
[696321.331182] usb 5-1.3.2: Not enough bandwidth for new device state.
[696321.331189] usb 5-1.3.2: Not enough bandwidth for altsetting 7
I initially assumed that this was a hardware issue, but the device is able to successfully stream camera's maximum resolution 1920x1080 in raw video format, but fails to stream 2 cameras at 640x480 in MJPEG resolution.
It is clear that number of bits that the bus can transfer per second is not the cause of the issue.
Does anyone know what the issue may be?
