The script is nothing to write home about at the moment, with most of my time being spent just dialing it in for performance given the age of the Thinkserver. I feel that’s pretty squared away, so the next step is updating it to accept args for things like fps, resolution, etc.

#!/bin/sh

AUDIO_DEV="hw:CARD=HDMI,DEV=0"
FPS=60
OUTDIR="/home/wesker/capture"
PREVIEW_URL="udp://netsphere.lab:5000?pkt_size=1316"

exec ffmpeg -hide_banner \
  -thread_queue_size 2048 -f v4l2 -input_format yuyv422 \
    -video_size 1920x1080 -framerate "$FPS" -i /dev/video0 \
  -thread_queue_size 2048 -f alsa -i "$AUDIO_DEV" \
  -map 0:v -map 1:a \
    -c:v dnxhd -profile:v dnxhr_sq -c:a pcm_s16le \
    "$OUTDIR/$(date +%F-%H%M%S).mov" \
  -map 0:v -map 1:a \
    -c:v libx264 -preset ultrafast -tune zerolatency -g 20 \
    -c:a aac -b:a 128k \
    -f mpegts "$PREVIEW_URL"