$FFMPEG -loglevel error -f alsa -ac 2 -i hw:Loopback,1,0 -fflags +genpts \
-loop 1 -framerate $FPS -i $IMGS \
-vf "drawtext=fontsize=36:fontfile=/usr/share/fonts/truetype/freefont/FreeSans.ttf:bordercolor=$BCOLOR:borderw=2:fontcolor=$COLOR:textfile=$TEXT:reload=1:y=h-line_h-60:x=20" \
-vcodec h264_omx -g $KEYINT \
-c:a libfdk_aac -b:a 128k -ar 44100 \
-f flv $URL


WriteN, RTMP send error 104 (66 bytes)
WriteN, RTMP send error 32 (54 bytes)
WriteN, RTMP send error 9 (42 bytes)
av_interleaved_write_frame(): Operation not permitted
Error writing trailer of rtmp://a.rtmp.youtube.com/live2/fq6g-37dj-36z2-a5xs: Operation not permitted