Invalif ELF Header

[Nisbo]

Question

I try to use Mediamtx on my Raspberry PI 3 with an USB Camera

wget https://github.com/bluenviron/mediamtx/releases/download/v1.9.0/mediamtx_v1.9.0_linux_armv7.tar.gz

with this yaml config

paths:
  cam:
    runOnInit: ffmpeg -f v4l2 -i /dev/video0 -pix_fmt yuv420p -preset ultrafast -b:v 600k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH
    runOnInitRestart: yes

I get the error below

pi@phoscon:~ $ ./mediamtx mediamtx.yml
2024/09/13 16:16:16 INF MediaMTX v1.9.0
2024/09/13 16:16:16 INF configuration loaded from /home/pi/mediamtx.yml
2024/09/13 16:16:16 INF [path cam] runOnInit command started
2024/09/13 16:16:16 INF [RTSP] listener opened on :8554 (TCP), :8000 (UDP/RTP), :8001 (UDP/RTCP)
2024/09/13 16:16:16 INF [RTMP] listener opened on :1935
2024/09/13 16:16:16 INF [HLS] listener opened on :8888
2024/09/13 16:16:16 INF [WebRTC] listener opened on :8889 (HTTP), :8189 (ICE/UDP)
2024/09/13 16:16:16 INF [SRT] listener opened on :8890 (UDP)
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:16 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:21 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:26 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:31 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:36 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:42 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:47 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:52 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:16:57 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:02 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:07 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:12 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:17 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:22 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:27 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:32 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:37 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:42 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:47 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:52 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:17:57 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:03 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:08 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:13 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:18 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:23 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:28 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:33 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:38 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:43 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:48 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:53 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:18:58 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:03 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:08 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:13 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:19 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:24 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:29 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:34 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:39 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:44 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:49 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:54 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:19:59 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:20:04 INF [path cam] runOnInit command exited: command exited with code 0
ffmpeg: error while loading shared libraries: /lib/arm-linux-gnueabihf/libcom_err.so.2: invalid ELF header
2024/09/13 16:20:09 INF [path cam] runOnInit command exited: command exited with code 0
^C2024/09/13 16:20:10 INF shutting down gracefully
2024/09/13 16:20:10 INF [SRT] listener is closing
2024/09/13 16:20:10 INF [WebRTC] listener is closing
2024/09/13 16:20:10 INF [HLS] listener is closing
2024/09/13 16:20:10 INF [RTMP] listener is closing
2024/09/13 16:20:10 INF [RTSP] listener is closing
2024/09/13 16:20:10 INF [path cam] runOnInit command stopped
2024/09/13 16:20:10 INF waiting for running hooks
pi@phoscon:~ $

Additional info

pi@phoscon:~ $ v4l2-ctl --list-devices
bcm2835-codec-decode (platform:bcm2835-codec):
        /dev/video10
        /dev/video11
        /dev/video12
        /dev/video18

bcm2835-isp (platform:bcm2835-isp):
        /dev/video13
        /dev/video14
        /dev/video15
        /dev/video16

USB Camera (usb-3f980000.usb-1.5):
        /dev/video0

Any idea ?

[aler9]

This is not a MediaMTX-related error but a FFmpeg-related error. Make sure that FFmpeg is installed properly.