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path: root/bin/encodevideo+loop+stream
blob: 94ea7654e81d468dfaf81ab6d231a7b35e2225f2 (plain)
  1. #!/bin/sh
  2. set -e
  3. INPUT=../tmp/omni/show0/earth.yuv
  4. HOST=${1:-morla}
  5. if [ "$HOST" = "$(hostname --short)" ]; then
  6. IP=127.0.0.1
  7. else
  8. IP=$(host "$HOST" | grep -Po 'address \K\S+')
  9. fi
  10. FIRSTPORT=${2:-5002} # even number - next 3 ports used too
  11. # TODO: resolve this or resize based on it
  12. HEIGHT=360
  13. SPEED_VPX=15
  14. # inspired by Apple HLS recommendations
  15. if [ $HEIGHT -le 234 ]; then VBITRATE=145000;
  16. elif [ $HEIGHT -le 270 ]; then VBITRATE=365000;
  17. elif [ $HEIGHT -le 360 ]; then VBITRATE=730000;
  18. elif [ $HEIGHT -le 432 ]; then VBITRATE=1100000;
  19. elif [ $HEIGHT -le 540 ]; then VBITRATE=2000000;
  20. elif [ $HEIGHT -le 720 ]; then VBITRATE=3000000;
  21. fi
  22. # based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
  23. # + Add 1s latency (deadline)
  24. # + Use same RTP payload types as GStreamer
  25. ffmpeg -hide_banner -threads auto -re \
  26. -stream_loop -1 -i "$INPUT" \
  27. -map '0:v' \
  28. -pix_fmt yuv420p \
  29. -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used "$SPEED_VPX" \
  30. -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
  31. -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
  32. -max-intra-rate 0 \
  33. -qmin 4 -qmax 56 \
  34. -f rtp -payload_type 100 "rtp://$IP:$((FIRSTPORT+2))?pkt_size=1200"