From 8db8e07720e182ef4cadf37c950819411f63f5ed Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Thu, 27 Apr 2017 21:17:03 +0200
Subject: Fork captureIIDC+edit+encode+stream as
 captureDVCAM+edit+encode+stream.

---
 bin/captureDVCAM+edit+encode+stream | 46 +++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100755 bin/captureDVCAM+edit+encode+stream

(limited to 'bin')

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"
-- 
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