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  1. #!/bin/sh
  2. set -e
  3. # TODO: Externalize to site-specific configfile
  4. [ $# -gt 0 ] || set -- morla 5002 -- dvcam ../../content/icon_small.png
  5. exit1() {
  6. echo >&2 "ERROR: $1"
  7. exit 1
  8. }
  9. while [ $# -gt 0 ]; do
  10. case $1 in
  11. --)
  12. shift; break;;
  13. *)
  14. if [ -z "$HOST" ]; then
  15. HOST=$1
  16. elif [ -z "$FIRSTPORT" ]; then
  17. FIRSTPORT=$1
  18. else
  19. exit1 "Too many arguments: Max. 2 about target"
  20. fi
  21. ;;
  22. esac
  23. shift
  24. done
  25. # TODO: Externalize to site-specific configfile
  26. [ $# -gt 0 ] || set -- dvcam ../../content/icon_small.png
  27. while [ $# -gt 0 ]; do
  28. case $1 in
  29. alsa=*) ALSA=${1#*=}; AINPUT=$((AINPUT+1));;
  30. alsa) ALSA=default; AINPUT=$((AINPUT+1));;
  31. dvcam=*) DVCAM=${1#*=}; XINPUT=$((XINPUT+1));;
  32. dvcam) DVCAM=auto; XINPUT=$((XINPUT+1));;
  33. dc=*) IIDC=${1#*=}; VINPUT=$((VINPUT+1));;
  34. dc) IIDC=/dev/fw1; VINPUT=$((VINPUT+1));;
  35. videofile=*) VFILE=${1#*=}; VINPUT=$((VINPUT+1));;
  36. *.ffv1|*.yuv|*.vp8|*.vp9) VFILE=$1; VINPUT=$((VINPUT+1));;
  37. container=*) XFILE=${1#*=}; XINPUT=$((XINPUT+1));;
  38. *.avi|*.mkv|*.mov|*.mp4|*.ogg|*.ogv|*.webm) XFILE=$1; XINPUT=$((XINPUT+1));;
  39. *.png) LOGO=$1; WINPUT=$((WINPUT+1));;
  40. --) shift; break;;
  41. *) exit1 "Unsupported input: $1";;
  42. esac
  43. shift
  44. done
  45. HOST=${HOST:-127.0.0.1}
  46. if [ "$HOST" = "$(hostname --short)" ]; then
  47. IP=127.0.0.1
  48. else
  49. IP=$(host "$HOST" | grep -Po 'address \K\S+')
  50. fi
  51. [ -n "$AINPUT$VINPUT$XINPUT" ] || exit1 "Too few arguments: Min. 1 A/V source"
  52. [ -z "$AINPUT" ] || [ -z "$VINPUT" ] || [ -z "$XINPUT" ] || exit1 "Too many arguments: Max. 2 A/V sources"
  53. [ -z "$AINPUT" ] || [ $AINPUT -eq 1 ] || exit1 "Too many arguments: Max. 1 audio source"
  54. [ -z "$VINPUT" ] || [ $VINPUT -eq 1 ] || exit1 "Too many arguments: Max. 1 video source"
  55. [ -z "$WINPUT" ] || [ $WINPUT -eq 1 ] || exit1 "Too many arguments: Max. 1 watermark source"
  56. [ -z "$XINPUT" ] || [ $XINPUT -eq 1 ] || exit1 "Too many arguments: Max. 1 multimedia source"
  57. [ -n "$NOAUDIO" ] || [ -z "$AINPUT$XINPUT" ] || HASAUDIO=1
  58. [ -n "$NOVIDEO" ] || [ -z "$VINPUT$XINPUT" ] || HASVIDEO=1
  59. [ "$AINPUT$VINPUT$XINPUT" = "1" ] || TWOSOURCES=1
  60. VSTREAMINDEX=1
  61. [ -n "$AINPUT" ] || VSTREAMINDEX=0
  62. FIRSTPORT=${FIRSTPORT:-5002} # even number - next 3 ports used too
  63. ACHANNELS=2
  64. AFRAMERATE=48000
  65. ABITRATE=32000
  66. HEIGHT=360
  67. VBITRATE=256000
  68. MKWEBM='[webm]'
  69. [ -z "$MKWEBM" ] || VCODECCOUNT=$((VCODECCOUNT+1))
  70. SAVESTEM="$SAVEDIR/$(date +%Y%m%d-%H%M%S)"
  71. ${SAVEDIR:+export FFREPORT=file="$SAVESTEM.log"}
  72. # * scale+watermark trick based on http://stackoverflow.com/a/10937357
  73. # * routing based on http://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs#Teepseudo-muxer
  74. # * VP8 encoding based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
  75. # + Add 1s latency (deadline)
  76. # * Use same RTP payload types as GStreamer
  77. ffmpeg -hide_banner -threads auto -re \
  78. ${ALSA:+-f alsa -sample_rate "$AFRAMERATE" -channels "$ACHANNELS" -thread_queue_size 1024 -i "$ALSA"} \
  79. ${DVCAM:+-f iec61883 -thread_queue_size 64 -i $DVCAM} \
  80. ${XFILE:+-i "$XFILE"} \
  81. ${IIDC:+-f libdc1394 -video_size 640x480 -framerate 15 -thread_queue_size 256 -i "$IIDC"} \
  82. ${VFILE:+-i "$VFILE"} \
  83. ${LOGO:+-i "$LOGO"} \
  84. ${HASVIDEO:+-filter_complex \
  85. "[$VSTREAMINDEX:v]scale=-2:$HEIGHT${WATERMARK:-[v]}${WATERMARK:+[bg]${LOGO:+;
  86. [bg][$((VSTREAMINDEX+1)):v]overlay=main_w-overlay_w-20:main_h-overlay_h-20[v]}};
  87. [v]split=$VCODECCOUNT$MKWEBM" } \
  88. ${SAVEDIR:+-map '0:' ${TWOSOURCES:+-map '1:'} \
  89. -codec copy \
  90. -f segment -segment_format matroska -segment_format_options live=1:reserve_index_space=512kB \
  91. -segment_list "$SAVESTEM.ffconcat" -segment_list_flags live \
  92. -segment_time 600 -segment_atclocktime 1 -strftime 1 "$SAVESTEM-%H%M.mkv"} \
  93. ${MKWEBM:+\
  94. ${HASAUDIO:+-map '0:a' } ${HASVIDEO:+-map '[webm]' } \
  95. ${HASAUDIO:+\
  96. -codec:a libopus -ac "$ACHANNELS" -ar "$AFRAMERATE" -b:a "$ABITRATE" } \
  97. ${HASVIDEO:+\
  98. -pix_fmt yuv420p \
  99. -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used 15 \
  100. -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
  101. -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
  102. -max-intra-rate 0 \
  103. -qmin 4 -qmax 56 } \
  104. -f tee \
  105. "${HASAUDIO:+[select=\'a\':f=rtp:payload_type=111]rtp://$IP:$FIRSTPORT?pkt_size=1200| \
  106. }${HASVIDEO:+[select=\'v\':f=rtp:payload_type=100]rtp://$IP:$((FIRSTPORT+2))?pkt_size=1200}" }