Author Topic: Audio - Manual Gain  (Read 447 times)

Blues

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Audio - Manual Gain
« on: June 06, 2017, 06:06:47 PM »
There is automatic option which adjusts peak volume to -3 dB. And there is manual option which allows set custom gain value. This is what confuses me. I just cannot increase the level by random, I need to know the current max level. Do I have to extract the audio and analyze it with some other tool?
« Last Edit: June 06, 2017, 08:18:09 PM by Blues »

Blues

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Re: Audio - Manual Gain
« Reply #1 on: July 13, 2017, 01:46:36 PM »
Nobody knows how to use this function?

eumagga0x2a

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Re: Audio - Manual Gain
« Reply #2 on: July 13, 2017, 06:51:33 PM »
In short, you basically want automatic mode for the normalize audio filter with customizable peak level (db_out), right?

Quote
Do I have to extract the audio and analyze it with some other tool?

Not necessarily. Select the automatic gain mode, save the source video with video in copy mode and audio set to codec of your choice (you don't need the resulting file) and search the log (admlog.txt on Windows, console output on Linux and Mac) for the string

Code: [Select]
[Normalize]Gain
Add 3dB to the value shown and you get the max gain you can use without clipping.

However, audio filters are not on my radar at the moment.

Blues

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Re: Audio - Manual Gain
« Reply #3 on: July 18, 2017, 04:16:06 PM »
Thanks for this workaround. :) I hope in future this feature will be improved.