diff options
| author | Jonas Smedegaard <dr@jones.dk> | 2017-04-06 16:15:04 +0200 |
|---|---|---|
| committer | Jonas Smedegaard <dr@jones.dk> | 2017-04-12 09:47:47 +0200 |
| commit | 4e90e07993ae8e720a936707f23f82080eced8c9 (patch) | |
| tree | d1060439756448e65231686eca0c748af9aced3d | |
| parent | 911c025a73eb30bffcba25add4b2dde1a8778438 (diff) | |
Compute buffer sizes from bitrate.
| -rwxr-xr-x | bin/stream.sh | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/bin/stream.sh b/bin/stream.sh index 01ef12d..7b8a635 100755 --- a/bin/stream.sh +++ b/bin/stream.sh @@ -12,6 +12,7 @@ fi PORT=${2:-5004} SIZE=640x360 +BITRATE=500000 MOVIE=../src/omni/show0/earth.mp4 LOGO=../../content/icon_small.png @@ -19,15 +20,13 @@ LOGO=../../content/icon_small.png # based on http://video.stackexchange.com/a/16933 # + codec options from http://www.webmproject.org/docs/encoder-parameters/ # example "Real-time CBR Encoding and Streaming" -# (bufsize = 6000 * 500k / 1000) -# (rc_init_occupancy = 4000 * 500k / 1000) # + Drop frames, aggressively treat as static, and use fastest cpu ffmpeg -threads auto -re \ -f lavfi -i "movie=filename=$MOVIE:loop=0, setpts=N/(FRAME_RATE*TB), scale=$SIZE" \ -i "$LOGO" -filter_complex 'overlay=main_w-overlay_w-20:main_h-overlay_h-20' \ -codec:v vp8 -quality realtime -deadline realtime -cpu-used 15 \ - -b:v 500k -minrate 500k -maxrate 500k \ - -undershoot-pct 95 -bufsize 3M -rc_init_occupancy 2M \ + -b:v "$BITRATE" -minrate "$BITRATE" -maxrate "$BITRATE" \ + -undershoot-pct 95 -bufsize $((6000*BITRATE/1000)) -rc_init_occupancy $((4000*BITRATE/1000)) \ -max-intra-rate 0 \ -qmin 4 -qmax 56 \ -static-thresh 500 -skip_threshold 50 \ |