Turn the volume up or down in audio files

[onlineaccount]

I want to ask if there is an option/parameter for change volume audio when download a youtube video/playlist. In ffmpeg is possible to up or down the volume audio with this option:

https://trac.ffmpeg.org/wiki/How%20to%20change%20audio%20volume%20up-down%20with%20FFmpeg

With youtube-dl it is possible to do this? If you download a playlist it is useful to set a dB value for all audio files to maintain equal sound.

Many thanks for your help!

[yan12125]

There's an implementation at #8733.

[onlineaccount]

What version it is implemented that implementation?

[yan12125]

There's no official versions yet. Here's a quick start:

1. Install Python 2.6+ or 3.2+
2. Download https://github.com/phnahes/youtube-dl/archive/audio-level.zip and extract it
3. python ./youtube_dl/__main__.py

[onlineaccount]

Thanks!