# ansible_playbook_audiometer
Ansible Playbook to Install Audio Meter
## Some useful links:
+ [FFMPEG HLS](https://www.martin-riedl.de/2018/08/24/using-ffmpeg-as-a-hls-streaming-server-part-1/)
```
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
```bash
#!/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=$FONT:text=native:fontcolor=white:fontsize=60:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/1.5[native_overlay];\
[0:a:0]showvolume=r=50:w=640:h=60:b=0:ds=log:dm=1.0[native_vu]; \
[preview_overlay][native_vu][native_overlay]vstack=inputs=3[full_mix]" \
-map "[full_mix]" -map 0:a:0 \
-g 30 \
-c:v libx264 -bufsize 16M -maxrate 8M -crf 24 -pix_fmt yuv420p -preset ultrafast \
-c:a aac -strict -2 -b:a 192k \
-f mpegts "udp://[ffd2::1]:1235"
```
Listen to rtmp and gen hls
```bash
ffmpeg -listen 1 -i rtmp://localhost/stream \
-nostats \
-loglevel repeat+level+info \
-filter_complex \
"[0:v:0]scale=640x360[orig_scaled];\
[full_mix]framerate=fps=25[out]; \
[orig_scaled]drawtext=fontfile=$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
```bash
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
```bash
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
```
videojs-contrib-hls embed
```