camera_stream.sh

#!/bin/bash

cameraName=$1
cameraUrl=$2

function usage {
   echo "Usage: $0 <cameraName> <rtsp://cameraUrl>"
   exit 1
}

if [ -z "$cameraName" ]; then
   echo "CameraName required"
   usage
fi

if [ -z "$cameraUrl" ]; then
   echo "CameraUrl required"
   usage
fi

while [ True ]; do
   ffmpeg \
     -i "$cameraUrl"                            `# What stream to read` \
     -an                                        `# No audio` \
     -c:v copy                                  `# Copy the video stream, dont re-encode it` \
     -tune fastdecode -tune zerolatency         `# Tune the video for performance` \
     -pix_fmt yuv420p                           `# Faster than rgb`\
     -level 21 \
     -b:v 400K \
     -r 25 -g 36 \
     -f hls                                     `# Write out an HLS stream` \
     -hls_time 2                                `# How much HLS to store at a time (seconds)` \
     -hls_allow_cache 0                         `# Send EXT-X-ALLOW-CACHE to NO in client` \
     -hls_list_size 3 \
     -hls_wrap 5                                `# How many segments to wrap back to the first` \
     -s 640x480                                 `# Scale the video` \
     -hls_segment_filename "/var/www/stream/$cameraName%03d.ts" `# Name for ts files` \
     -loglevel fatal                            `# Only show fatal errors` \
     /var/www/stream/"$cameraName".m3u8             # Output file
     sleep 10
done