Configurable ffmpeg (#13722)

* Install multiple ffmpeg versions and add config to make it configurable

* Update docs

* Run ffprobe too

* Cleanup

* Apply config to go2rtc as well

* Fix ffmpeg bin

* Docs

* Restore path

* Cleanup env var

* Fix ffmpeg path for encoding

* Fix export

* Formatting

docker/main/rootfs/etc/s6-overlay/s6-rc.d/frigate/run

@@ -44,8 +44,6 @@ function migrate_db_path() {
 
 echo "[INFO] Preparing Frigate..."
 migrate_db_path
-export LIBAVFORMAT_VERSION_MAJOR=$(ffmpeg -version | grep -Po 'libavformat\W+\K\d+')
-
 echo "[INFO] Starting Frigate..."
 
 cd /opt/frigate || echo "[ERROR] Failed to change working directory to /opt/frigate"

docker/main/rootfs/etc/s6-overlay/s6-rc.d/go2rtc/run

@@ -43,8 +43,6 @@ function get_ip_and_port_from_supervisor() {
     export FRIGATE_GO2RTC_WEBRTC_CANDIDATE_INTERNAL="${ip_address}:${webrtc_port}"
 }
 
-export LIBAVFORMAT_VERSION_MAJOR=$(ffmpeg -version | grep -Po 'libavformat\W+\K\d+')
-
 if [[ -f "/dev/shm/go2rtc.yaml" ]]; then
     echo "[INFO] Removing stale config from last run..."
     rm /dev/shm/go2rtc.yaml