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path: root/bin/decode+edit+loop+encode+stream
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  1. #!/bin/sh
  2. # FIXME: Handle audio track in main input
  3. # TODO: Handle audio as secondary input
  4. set -e
  5. INPUT=../src/omni/show0/earth.mp4
  6. LOGO=../../content/icon_small.png
  7. HOST=${1:-morla}
  8. if [ "$HOST" = "$(hostname --short)" ]; then
  9. IP=127.0.0.1
  10. else
  11. IP=$(host "$HOST" | grep -Po 'address \K\S+')
  12. fi
  13. FIRSTPORT=${2:-5002} # even number - next 3 ports used too
  14. ITERATIONS=${3-0} # endless by default
  15. HEIGHT=360
  16. VBITRATE=256000
  17. # based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
  18. # + loop-in-filter trick based on http://video.stackexchange.com/a/16933
  19. # + scale+watermark trick based on http://stackoverflow.com/a/10937357
  20. # + Add 1s latency (deadline)
  21. # + Use same RTP payload types as GStreamer
  22. ffmpeg -hide_banner -threads auto -re \
  23. -f lavfi -i "movie=filename=$INPUT:loop=$ITERATIONS, setpts=N/(FRAME_RATE*TB)" \
  24. -i "$LOGO" \
  25. -filter_complex \
  26. "[0:v]scale=-1:$HEIGHT[bg];
  27. [bg][1:v]overlay=main_w-overlay_w-20:main_h-overlay_h-20[v]" \
  28. -map '[v]' \
  29. -pix_fmt yuv420p \
  30. -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used 15 \
  31. -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
  32. -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
  33. -max-intra-rate 0 \
  34. -qmin 4 -qmax 56 \
  35. -f rtp -payload_type 100 "rtp://$IP:$((FIRSTPORT+2))?pkt_size=1200"