Simple post to solve a little/big issue: i was playing with HASSIO and my ipcameras ( chinese nobrand 🙁 ) and i have a problem when i was using ffmpeg: even with a single ipcamera, i had 100% cpu usage. It was a nightmare!
Until i found mjpeg: infact, replacing ffmpeg with mjpeg i’ve dropped the cpu usage to near 0% in this way:
Before
camera:
   - platform: ffmpeg
     input: rtsp://admin:xxxxx@192.168.0.36:10554/udp/av0_0
After
camera:
   - platform: mjpeg
     mjpeg_url: "http://192.168.0.36:38736/snapshot.cgi?user=admin&pwd=xxxxx"
Of course you need a ipcamera that supports CGI.
You can simple discover open ports on your IPCamera with nmap in this way:
nmap - 1-65535 $youripcamera
Cheers!

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