improve stream testing script (#2549)

* merge testContent.sh into ocContent.sh

* detect ffmpeg

ffmpeg or ffmpeg.exe in path, current dir, or parent dir

* use ocTestStream in api test

* enable verbose logging for api tests

* log ffmpeg version

* change ffmpeg lookup order

* set path properly for using the local ffmpeg

* rm double space from transcoder error logs

* update tests for new video stream

do not test bitrate

* set test stream target to 127.0.0.1

* log ffmpeg path

* update ffmpeg to v4.4.1

* improve logs

* fix ffmpeg installer script

* fix api test runner

* fix logs

* install fonts

* cleanup

* use ocTestStream.sh for all automated tests

* cleanup ocTestStream.sh

* cleanup test/automated/hls/run.sh

* Fix misspell

* fix ffmpeg installer in automated test runners

* spell fix

* cleanup script

* rev quick api tests

* cleanup tmp paths properly in automated tests

* rm unused ffmpeg package

* cleanup

* fix s3 test

* cache ffmpeg bin for automated tests

* shellcheck allow source

* rm missplaced file if backup fails

* use ffmpeg full path

* set lookup path for shellcheck

test/automated/api/run.sh

@@ -1,19 +1,13 @@
 #!/bin/bash
 
+source ../tools.sh
+
 TEMP_DB=$(mktemp)
 
 # Install the node test framework
 npm install --quiet --no-progress
 
-# Download a specific version of ffmpeg
-if [ ! -d "ffmpeg" ]; then
-	mkdir ffmpeg
-	pushd ffmpeg >/dev/null || exit
-	curl -sL https://github.com/vot/ffbinaries-prebuilt/releases/download/v4.2.1/ffmpeg-4.2.1-linux-64.zip --output ffmpeg.zip >/dev/null
-	unzip -o ffmpeg.zip >/dev/null
-	PATH=$PATH:$(pwd)
-	popd >/dev/null || exit
-fi
+ffmpegInstall
 
 pushd ../../.. >/dev/null || exit
 
@@ -27,12 +21,12 @@ sleep 5
 
 # Start streaming the test file over RTMP to
 # the local owncast instance.
-ffmpeg -hide_banner -loglevel panic -stream_loop -1 -re -i ../test.mp4 -vcodec libx264 -profile:v main -sc_threshold 0 -b:v 1300k -acodec copy -f flv rtmp://127.0.0.1/live/abc123 &
+../../ocTestStream.sh &
 FFMPEG_PID=$!
 
 function finish {
-	rm "$TEMP_DB"
 	kill $SERVER_PID $FFMPEG_PID
+	rm -fr "$TEMP_DB" "$FFMPEG_PATH"
 }
 trap finish EXIT