Add workaround for a bug in Raspberry Pi 4 VL805 0x000137ab firmware (streaming issues) #623
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…(streaming issues) The 0x000137ab frimware of VL805 on Raspberry Pi 4 is known to cause problems with USB cameras - stream not working or working only in very low resolution (like QVGA 320x240). Choosing slightly higher resolution 640x480 causes streaming to fail: you can see a lot of "uvcvideo: USB isochronous frame lost (-18)." lines in the dmesg logs and "i: select() timeout" in the mjpg_streamer's output. You may need to enable uvcvideo's tracing to see those errors: echo 0xffff > /sys/module/uvcvideo/parameters/trace For details see: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=244421
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Thanks @szopen111 ! This fixes #621 correct? |
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The
0x000137abfrimware ofVL805on Raspberry Pi 4 is known to cause problems with USB cameras - stream not working or working only in very low resolution (like QVGA320x240). See #621.Choosing slightly higher resolution
640x480causes streaming to fail: you can see a lot ofuvcvideo: USB isochronous frame lost (-18).lines in the dmesg logs andi: select() timeoutin themjpg_streamer's output.You may need to enable uvcvideo's tracing to see those errors:
For details see: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=244421