Ansible Playbook to Install Audio Meter

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README.md

ansible_playbook_audiometer

Ansible Playbook to Install Audio Meter

Some useful links:

FFMPEG HLS

ACHTUNG

Shitty ansible, sollte man in schön machen.
Soll jetzt aber laufen und ist dringend/keine Zeit und so... ;P

FFMPEG COMMAND

Generate Audiometer for video

#!/bin/bash
# video in 640 x 960 and 25FPS
yt-dlp "https://youtu.be/eWZwzxNSLVc" -o - | ffmpeg -y -i pipe: \
-nostats \
-loglevel repeat+level+info \
-filter_complex \
"[0:v:0]scale=640x360[orig_scaled];\
 [0:a:0]aformat=channel_layouts=stereo:sample_rates=44100:sample_fmts=fltp[0:a:0];\
 [orig_scaled]drawtext=fontfile=$FONT:text=$STREAM:fontcolor=white:fontsize=100:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/1.5[preview_overlay];\
 [0:a:0]ebur128=video=1:size=640x480:meter=9:target=-16:gauge=shortterm[native][native_a]; [native_a]anullsink; \
 [native]drawtext=fontfile=$FONT:text=native:fontcolor=white:fontsize=60:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/1.5[native_overlay];\
 [0:a:0]showvolume=r=50:w=640:h=60:b=0:ds=log:dm=1.0[native_vu]; \
 [preview_overlay][native_vu][native_overlay]vstack=inputs=3[full_mix]" \
-map "[full_mix]" -map 0:a:0 \
-g 30 \
-c:v libx264 -bufsize 16M -maxrate 8M -crf 24 -pix_fmt yuv420p -preset ultrafast \
-c:a aac -strict -2 -b:a 192k \
-f mpegts "udp://[ffd2::1]:1235"

Listen to rtmp and gen hls

ffmpeg -listen 1 -i rtmp://localhost/stream \
    -nostats \
       -loglevel repeat+level+info \
       -filter_complex \
       "[0:v:0]scale=640x360[orig_scaled];\
        [full_mix]framerate=fps=25[out]; \
        [orig_scaled]drawtext=fontfile=$FONT:text=$STREAM:fontcolor=white:fontsize=100:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/1.5[preview_overlay];\
        [0:a:0]ebur128=video=1:size=640x480:meter=9:target=-16:gauge=shortterm[native][native_a]; [native_a]anullsink; \
        [native]drawtext=fontfile=$FONT:text=native:fontcolor=white:fontsize=60:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/1.5[native_overlay];\
        [0:a:0]showvolume=r=50:w=640:h=60:b=0:ds=log:dm=1.0[native_vu]; \
        [preview_overlay][native_vu][native_overlay]vstack=inputs=3[full_mix] " \
       -map "[out]" \
       -g 30 \
       -c:v libx264 -bufsize 16M -maxrate 8M -crf 24 -pix_fmt yuv420p -preset ultrafast \
        -f hls -hls_time 4 -hls_playlist_type event stream.m3u8

Stream to rtmp://localhost/stream

yt-dlp "https://youtu.be/eWZwzxNSLVc" -o - | ffmpeg -y -i pipe: \
  -c:v libx264 -bufsize 16M -maxrate 8M -crf 24 -pix_fmt yuv420p -preset ultrafast \
  -c:a aac \
  -f flv rtmp://localhost/stream

Audio to audiometer

ffmpeg -i "https://st01.sslstream.dlf.de/dlf/01/high/aac/stream.aac" \
    -filter_complex \
     "color=c=black:size=640x480:rate=25[bg]; \
     [0:a]ebur128=video=1:size=640x480:meter=9:target=-16[volume_meter]; \
     [bg][volume_meter]overlay=format=yuv420[out]" \
     -map "[out]"     -map 0:a     -c:v libx264 -c:a aac -b:a 128k \
     -crf 24 -pix_fmt yuv420p -preset ultrafast \
     -strict -2 -b:a 192k \
     -f mpegts "udp://[ffd2::1]:1235"

Webplayer example

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>videojs-contrib-hls embed</title>
<link href="//vjs.zencdn.net/7.10.2/video-js.min.css" rel="stylesheet">
</head>
<body>
<video-js id=vid1 width=640 height=960 class="vjs-default-skin" controls>
  <source
     src="stream.m3u8"
     type="application/x-mpegURL">
</video-js>
<script src="//vjs.zencdn.net/7.10.2/video.min.js"></script>
<script src="https://github.com/videojs/http-streaming/releases/download/v2.16.0/videojs-http-streaming.min.js"></script>
<script>
var player = videojs('vid1');
player.play();
</script>

</body>
</html>