externremux.sh ffmpeg

#!/bin/sh
#
# externremux.sh

### GENERAL CONFIG START
###
# Pick one of DSL/WLAN
QUALITY="LOW"
###
### GENERAL CONFIG END

case "$REMUX_VPID" in
''|0|1) CONTENTTYPE='audio/mpeg';;
*) CONTENTTYPE='video/mpeg';;
esac

QUALITY=${REMUX_PARAM_QUALITY:-$QUALITY}
case "$QUALITY" in
LOW|low) VBR=700K; ABR=64K; VSIZE=ega;;
DSL|dsl) VBR=640K; ABR=64K; VSIZE=hd480;;
WLAN|wlan) VBR=1500K; ABR=128K; VSIZE=hd480;;
*) error "Unknown quality '$QUALITY'";;
esac
ABR=${REMUX_PARAM_ABR:-$ABR}
VBR=${REMUX_PARAM_VBR:-$VBR}
VSIZE=${REMUX_PARAM_VSIZE:-$VSIZE}

FPS=${REMUX_PARAM_FPS:-$FPS}

if [ "$SERVER_PROTOCOL" = HTTP ]; then
echo -ne "Content-type: ${CONTENTTYPE}\r\n"
echo -ne '\r\n'
# abort after headers
[ "$REQUEST_METHOD" = HEAD ] && exit 0
fi

/home/server/bin/ffmpeg -f mpegts -i - \
-filter:vf yadif -filter:v scale=${VSIZE} \
-c:v libx264 -preset fast -crf 21 -maxrate ${VBR} -map 0:v:0? -deinterlace -bufsize 1024K -profile:v high -level 4.0 \
-c:a aac -map 0:m:language:hun? -map -0:m:language:eng? -ignore_unknown -b:a ${ABR} -ar 44100 -ac 2 -async 50 -sn \
${FPS:+-r $FPS} \
-f mpegts pipe:1