Create multicast stream of two ip camera streams side-by-side

ffmosaic-iina.sh

#!/bin/bash

#Watch multicast stream of two ip camera streams side-by-side in IINA player

url="udp://239.0.0.1:1234?ttl=13&pkt_size=1317"

ffmpeg -loglevel panic -re \
    -i "rtmp://camera1.lan/bcs/channel0_ext.bcs?channel=0&stream=2&user=guest&password=guest123" \
    -i "rtmp://camera2.lan/bcs/channel0_ext.bcs?channel=0&stream=2&user=guest&password=guest123" \
    -filter_complex "nullsrc=size=1280x480 [base]; \
    [0:v] setpts=PTS-STARTPTS, scale=640x480 [upperleft]; \
    [1:v] setpts=PTS-STARTPTS, scale=640x480 [upperright]; \
    [base][upperleft] overlay=shortest=0 [tmp1]; \
    [tmp1][upperright] overlay=shortest=0:x=640" \
	-s 1280x480 -vcodec libx264 -preset fast -crf 20 \
    `#-x264opts keyint=50:bframes=0:ratetol=1.0:ref=1` \
    `#-tune zerolatency -g 50 -r 25` \
    -profile baseline \
    -b:v 1M -minrate:v 1M -maxrate:v 1M -bufsize:v 3M \
    -an -f mpegts "$url" &

pid=$!

/Applications/IINA.app/Contents/MacOS/iina-cli --keep-running $url

kill $pid

ffmosaic.sh

#Create mosaic of two camera streams side-by-side

ffmpeg -re -i "rtmp://camera1.lan/bcs/channel0_ext.bcs?channel=0&stream=2&user=guest&password=guest123" \
    -i "rtmp://camera2.lan/bcs/channel0_ext.bcs?channel=0&stream=2&user=guest&password=guest123" \
    -filter_complex "nullsrc=size=1280x480 [base]; \
    [0:v] setpts=PTS-STARTPTS, scale=640x480 [upperleft]; \
    [1:v] setpts=PTS-STARTPTS, scale=640x480 [upperright]; \
    [base][upperleft] overlay=shortest=0 [tmp1]; \
    [tmp1][upperright] overlay=shortest=0:x=640" \
	-s 1280x480 -vcodec libx264 -preset fast -crf 20 \
    `#-x264opts keyint=50:bframes=0:ratetol=1.0:ref=1` \
    `#-tune zerolatency -g 50 -r 25` \
    -profile baseline \
    -b:v 1M -minrate:v 1M -maxrate:v 1M -bufsize:v 3M \
    -an -f mpegts "udp://239.0.0.1:1234?ttl=13&pkt_size=1316"