blob: 6f866547b66c3dbc95e4e9ab04be86d29ca7f455 (
plain)
- #!/bin/sh
- # FIXME: Handle audio
- set -e
- INPUT=../src/omni/show0/earth.mp4
- LOGO=../../content/icon_small.png
- OUTPUT=../tmp/omni/show0/earth.webm
- HEIGHT=360
- VBITRATE=256000
- mkdir -p $(dirname "$OUTPUT")
- # based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
- # + scale+watermark trick based on http://stackoverflow.com/a/10937357
- # + Add 1s latency (deadline)
- ffmpeg -hide_banner -threads auto -y -re \
- -i "$INPUT" \
- -i "$LOGO" \
- -filter_complex \
- "[0:v]scale=-2:$HEIGHT[bg];
- [bg][1:v]overlay=main_w-overlay_w-20:main_h-overlay_h-20[v]" \
- -map '[v]' \
- -pix_fmt yuv420p \
- -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used 4 \
- -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
- -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
- -max-intra-rate 0 \
- -qmin 4 -qmax 56 \
- -f webm "$OUTPUT"
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