live.sh

#!/bin/bash

main_list_file="$1"
base_dir="$2"
lock_file="$base_dir/live.lock"
cd $base_dir

dir=''

function onExit() {
    rm -f "$dir/streaming"
}

trap onExit EXIT

exec 320<>$lock_file

while :
do
    dir=`shuf $main_list_file | head -1`
    echo 'dir: ' "$dir"
    if [ -z "$dir" ]; then
        continue
    fi

    flock -w 3 320
    if [ ! -f "$dir/streaming" ]; then
        touch "$dir/streaming"
    else
        continue
    fi
    flock -u 320

    line=`find "$dir" | grep -E 'mkv|mp4|flv' | sort | wc -l`
    start=`expr $RANDOM % $line`
    end=`expr $line - $start`

    list_file="list$3"

    echo '' > $list_file

    for file in `find "$dir" | grep -E 'mkv|mp4|flv' | sort | tail -n $end`; do
        probe_file=$file
        echo 'file' $file >> $list_file
    done;
    for file in `find "$dir" | grep -E 'mkv|mp4|flv' | sort | head -n $start`; do
        echo 'file' $file >> $list_file
    done;

    if ffprobe "$probe_file" 2>&1 | grep -E 'eac3|dts'; then
        load=`cat /proc/loadavg | awk '{print $3}'`
        if [ `echo "$load > 2" | bc` -eq 1 ]; then
            rm -f "$dir/streaming"
            continue
        fi
        ffmpeg -loglevel warning -y -re \
            -f concat -safe 0 -i $list_file \
            -map 0 -c:v copy -c:a ac3 -sn \
            -f hls -hls_list_size 6 -hls_wrap 10 -hls_time 5 -hls_segment_filename "live$3-%03d.ts" $base_dir/live$3.m3u8 \
            -map 0 -c:v copy -c:a ac3 -sn \
            -f hls -hls_segment_type fmp4 -hls_fmp4_init_filename ios-init$3.mp4 -hls_list_size 6 -hls_wrap 10 -hls_time 5 -hls_segment_filename "ios-live$3-%03d.ts" $base_dir/ios-live$3.m3u8

    else
        ffmpeg -loglevel warning -y -re \
            -f concat -safe 0 -i $list_file \
            -map 0 -c copy -sn \
            -f hls -hls_list_size 6 -hls_wrap 10 -hls_time 5 -hls_segment_filename "live$3-%03d.ts" $base_dir/live$3.m3u8 \
            -map 0 -c copy -sn \
            -f hls -hls_segment_type fmp4 -hls_fmp4_init_filename ios-init$3.mp4 -hls_list_size 6 -hls_wrap 10 -hls_time 5 -hls_segment_filename "ios-live$3-%03d.ts" $base_dir/ios-live$3.m3u8
    fi

    rm -f "$dir/streaming"
done;