first commit

camv

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+out=${1:-/tmp/cam-$(date +%Y%m%d-%H%M%S).mp4}
+raw=$(mktemp --suffix=.mkv)
+conf=$(mktemp)
+trap 'rm -f "$conf" "$raw"' EXIT
+
+printf 's set stream-record "%s" ; show-text REC\n' "$raw" > "$conf"
+
+mpv av://v4l2:/dev/video0 \
+    --demuxer-lavf-format=video4linux2 \
+    --demuxer-lavf-o=input_format=mjpeg,video_size=640x480 \
+    --profile=low-latency \
+    --force-window=immediate \
+    --geometry=50%:50% \
+    --input-conf="$conf" \
+    --title=camv --osd-msg1="s: rec   q: stop" \
+    --really-quiet 2>/dev/null
+
+[ -s "$raw" ] || exit 0
+
+ffmpeg -hide_banner -loglevel fatal -nostdin \
+    -vaapi_device /dev/dri/renderD128 -i "$raw" \
+    -vf 'format=nv12,hwupload' \
+    -c:v h264_vaapi -qp 28 -y "$out"
+echo "$out"