RetroFE forums

General Category => Feature Requests / Suggestions => Topic started by: cassette on January 29, 2017, 07:27:11 AM

Title: Audio normalization
Post by: cassette on January 29, 2017, 07:27:11 AM

Any interest on this? So what happens with the gameplay videos I've got is that some are very loud, while others aren't, which is really annoying because sometimes it's quite a big difference changing from one game to another. If I have the sound of my computer at a particular level, it's because I want stuff to output that amount of sound, so it's too bad some games feel like someone picked up the TV remote and started messing with me. I know video players have this option, so maybe it could be applied.

Title: Re: Audio normalization
Post by: Pieter Hulshoff on January 29, 2017, 07:37:31 AM

An equalizer functionality? Interesting, but not really my area of expertise. I'll put it on the list though.

Title: Re: Audio normalization
Post by: cassette on January 29, 2017, 07:55:03 AM

Cool!! I imagine it'd be pretty hard to do, so maybe someday.

Title: Re: Audio normalization
Post by: bodbod on February 03, 2017, 03:36:16 PM

Hi,

This functionality would be good, I agree with firewater.
Perhaps one way to manage it is to have a video file scanner listing the whole video path sets and then run a one time process with same normalization config for all of them rather than doing live audio corrections which may crunch the processor.

Thanks

Title: Re: Audio normalization
Post by: PinealServo on February 04, 2017, 05:41:46 AM

It looks like gstreamer has an audio level monitoring plugin that could be used to gather the information needed to do normalization.  We could store the information gathered about each video in the metadata database as it's played, and apply a volume adjustment to those that we have metadata for.  It might not be a perfect solution, but it ought to resolve large differences in volume between videos and other audio we might play in the future.

The level plugin: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-level.html

Title: Re: Audio normalization
Post by: Mark Norville on April 29, 2017, 11:53:23 AM

One way of doing it

http://mp3gain.sourceforge.net/ and then find acc gain, rename the aac gain to that of mp3 gain and then you can set a volume, I would recommend 95%

However, do small amounts at a time.

Regards

Mark

Title: Re: Audio normalization
Post by: JonahUK on April 29, 2017, 12:12:36 PM

If this is added, could you make it optional via a switch in settings.conf or similar?
Although, this can be done automatically if you use Windows by using the Loudness Equalization option in the Speaker control panel under Enhancements.
Please note that this may be card specific so may not be available on your system.