diff options
| -rwxr-xr-x | bin/captureDVCAM+edit+encode+stream | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/bin/captureDVCAM+edit+encode+stream b/bin/captureDVCAM+edit+encode+stream new file mode 100755 index 0000000..fd143c2 --- /dev/null +++ b/bin/captureDVCAM+edit+encode+stream @@ -0,0 +1,46 @@ +#!/bin/sh + +set -e + +AINPUT=hw:0 +VINPUT=/dev/fw1 +LOGO=../../content/icon_small.png + +HOST=${1:-morla} +if [ "$HOST" = "$(hostname --short)" ]; then + IP=127.0.0.1 +else + IP=$(host "$HOST" | grep -Po 'address \K\S+') +fi + +FIRSTPORT=${2:-5002} # even number - next 3 ports used too + +ACHANNELS=2 +AFRAMERATE=48000 +ABITRATE=32000 + +HEIGHT=360 +VBITRATE=256000 + +# 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) +# + Use same RTP payload types as GStreamer +ffmpeg -hide_banner -threads auto -re \ + -f alsa -sample_rate "$AFRAMERATE" -channels "$ACHANNELS" -thread_queue_size 1024 -i "$AINPUT" \ + -f libdc1394 -video_size 640x480 -framerate 15 -thread_queue_size 256 -i "$VINPUT" \ + -i "$LOGO" \ + -filter_complex \ + "[1:v]scale=-1:$HEIGHT[bg]; + [bg][2:v]overlay=main_w-overlay_w-20:main_h-overlay_h-20[v]" \ + -map '0:a' \ + -codec:a libopus -ac "$ACHANNELS" -ar "$AFRAMERATE" -b:a "$ABITRATE" \ + -f rtp -payload_type 111 "rtp://$IP:$FIRSTPORT?pkt_size=1200" \ + -map '[v]' \ + -pix_fmt yuv420p \ + -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used 15 \ + -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \ + -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \ + -max-intra-rate 0 \ + -qmin 4 -qmax 56 \ + -f rtp -payload_type 100 "rtp://$IP:$((FIRSTPORT+2))?pkt_size=1200" |