[HOW-TO]Run capture_circular_stream.py

[micksulley]

I am trying to use the capture_circular_stream.py from examples, to record video and to stream output to my desktop. It appears to run and capture video but on my desktop I see a series of strange characters like this ���
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eˆ„t‚˜ �!¡oÿøà�B8�ˆÇVð My desktop is running Firefox in Linux Mint.
If I run the mjpeg_server.py example it works fine.

Thanks Mick

[davidplowman]

Could you please include a short script that demonstrates what you're trying to do and shows the problem? If possible, please keep the script down to no more that a dozen or so line. Thanks.

[micksulley]

I've just discovered a problem with my SD card. I don't know if it's related but I will create a new one and try again. I'll get back to you.

[micksulley]

OK new SD card which passes the test. I am running "capture_circular_stream.py" from the examples on GITHUB. The terminal output looks OK and it records h264 clips when movement is detected, but the video stream is not working, I see a long long string of characters e.g. ���
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eˆ„H)ƒ �"iÿéöÇ1Àaä~•?ð†×Ûÿ¿ÿnÇWþß÷„1Û¢§§Þ6È'€ƒý—eêέ¿þð¾U–Ãå„vá¥÷êÎ$Ëÿ!ª‰þËÿÂ{߯ÿøŒ.ô!´ßÿÞÚú/K¥èŒì

My desktop browser (Firefox) is pointed to http://pi-5-wi:10001/index.html

If I run "mjpeg_server.py", again from the examples, it works fine with browser pointed to http://pi-5-wi:8000/index.html Just looking at the code it seems that "mjpeg_server.py" uses port 8000 and "capture_circular_stream.py" uses port 10001. Is that correct? Thanks Mick

[davidplowman]

You're right with the port numbers. But bear in mind that the circular example is just streaming a vanilla h.264 stream to a web socket, and browsers don't know how to interpret this. I would recommend a tool like ffplay, try pointing that at the address instead. (Even vlc won't play a basic h.264 stream.)

[micksulley]

Thanks for your help David, I now have it working. In case anyone else needs to know how - My pi is "pi-5-wi" running "capture_circular_stream.py" from the examples on GITHUB On my desktop (Linux Mint) terminal I run ffplay -i tcp://pi-5-wi:10001 and it shows me the live stream. Lots more to sort out but that is now working:) Mick

[lurch]

I guess this issue can be closed then?

[micksulley]

Still got lots to sort out but this issue can be closed.