Why motion detect is unavailbale?

Configuration
1

The camera and binary_sensor in configuration.yaml:

camera:
  - platform: ffmpeg
    name: "home_camera"
    input: -f rtsp -rtsp_transport http -i rtsp://admin:[email protected]:554/live
binary_sensor:
  - platform: ffmpeg_motion
    input: rtsp://admin:[email protected]:554/live
    name: motion detect1

In the Overview webpage:

unavailable
unavailable1239×485 62.6 KB

The camera can be shown in lovelace,why motion detect unavailbale?How can make it available?

2

According to the documentation:

Screenshot_20230828-200233~2
Screenshot_20230828-200233~21087×575 53.9 KB

3

call
call1566×432 26.4 KB

Restart it by click CALL SERVICE,and reopen with firefox,motion detect still unavailable.
Strange ,no process named ffmpeg in my os!

ps aux |grep  ffmpeg
debian      6695  0.0  0.0   6240   640 pts/0    S+   08:11   0:00 grep --color=no ffmpeg
ps aux |grep  ffmpeg*
debian      6695  0.0  0.0   6240   640 pts/0    S+   08:11   0:00 grep --color=no ffmpeg
ps aux |grep  *ffmpeg*
debian      6695  0.0  0.0   6240   640 pts/0    S+   08:11   0:00 grep --color=no ffmpeg

Hass version:

Version	core-2023.7.3