FunkyWayFM: The shell script used to merge the video feed and AzuraCast-powered radio feed into a single YouTube stream.

broadcast.sh

#! /bin/bash

VBR="1500k"
FPS="30"
QUAL="veryfast"

YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"
KEY=""

VIDEO_SOURCE="/home/ubuntu/video3.mp4"
AUDIO_SOURCE="http://localhost:8000/stream/;stream.mp3"
NP_SOURCE="/home/ubuntu/nowplaying.txt"

ffmpeg \
    -re -f lavfi -i "movie=filename=$VIDEO_SOURCE:loop=0, setpts=N/(FRAME_RATE*TB)" \
    -thread_queue_size 512 -i "$AUDIO_SOURCE" \
    -map 0:v:0 -map 1:a:0 \
    -map_metadata:g 1:g \
    -vf drawtext="fontfile=/home/ubuntu/unifont.ttf: fontsize=55: \
     box=0: boxcolor=black@0.5: boxborderw=20: \
     textfile=$NP_SOURCE: reload=1: fontcolor=white@0.8: x=315: y=960" \
    -vcodec libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
    -acodec libmp3lame -ar 44100 -threads 6 -qscale:v 3 -b:a 320000 -bufsize 512k \
    -f flv "$YOUTUBE_URL/$KEY"

nowplaying.php

<?php
// Now playing script.

$start_time = time();

while(time() < ($start_time + 59)) {

        $np_raw = file_get_contents('http://localhost:8000/stats');
        $np = xml_to_array($np_raw);

        $np_text = $np['SHOUTCASTSERVER']['SONGTITLE'];
        $np_text = wordwrap($np_text, 80);

        if (empty($np_text)) {
                $np_text = 'Funky Way FM';
        }

        atomic_put_contents('nowplaying.txt', $np_text);

        sleep(10);
}

function atomic_put_contents($filename, $data)
{
        file_put_contents($filename.'.new', $data);
        rename($filename.'.new', $filename);
}

function xml_to_array($xml)
{
    $values = $index = $array = [];
    $parser = xml_parser_create();
    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
    xml_parse_into_struct($parser, $xml, $values, $index);
    xml_parser_free($parser);
    $i = 0;
    $name = $values[$i]['tag'];
    $array[$name] = isset($values[$i]['attributes']) ? $values[$i]['attributes'] : '';
    $array[$name] = _struct_to_array($values, $i);

    return $array;
}

function _struct_to_array($values, &$i)
{
    $child = [];
    if (isset($values[$i]['value'])) {
        array_push($child, $values[$i]['value']);
    }

    while ($i++ < count($values)) {
        switch ($values[$i]['type']) {
            case 'cdata':
                array_push($child, $values[$i]['value']);
                break;

            case 'complete':
                $name = $values[$i]['tag'];
                if (!empty($name)) {
                    $child[$name] = ($values[$i]['value']) ? ($values[$i]['value']) : '';
                    if (isset($values[$i]['attributes'])) {
                        $child[$name] = $values[$i]['attributes'];
                    }
                }
                break;

            case 'open':
                $name = $values[$i]['tag'];
                $size = isset($child[$name]) ? sizeof($child[$name]) : 0;
                $child[$name][$size] = _struct_to_array($values, $i);
                break;

            case 'close':
                return $child;
                break;
        }
    }

    return $child;
}

Hi,
I run broadcast.sh but give a error nowplaying.txt' could not be read or is empty
How can i solve this?
thk you.