Foobar2000:ReplayGain Scanner:Alter File Content - Revision history

70.112.184.144 at 00:32, 12 August 2019

2019-08-12T00:32:15Z

← Older revision		Revision as of 00:32, 12 August 2019
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	== How to use ==		== How to use ==
	Select one or more audio files, right click, choose ~~ReplaGain~~ / Apply (track/album) Gain to File Content.		Select one or more audio files, right click, choose ReplayGain / Apply (track/album) Gain to File Content.

	== Supported formats ==		== Supported formats ==

C3POwen: Added "fb2k prefs" template.

2018-10-11T18:05:47Z

Added "fb2k prefs" template.

← Older revision		Revision as of 18:05, 11 October 2018
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			{{fb2k prefs\|foobar2000 Preferences ReplayGain Scanner Alter File Content.png\|Alter File Content}}
	This feature applies ReplayGain adjustment - or manual adjustment - directly to audio data on supported file formats.		This feature applies ReplayGain adjustment - or manual adjustment - directly to audio data on supported file formats.

DEATH: Added "how to use"

2018-02-02T13:22:20Z

Added "how to use"

← Older revision		Revision as of 13:22, 2 February 2018
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	Manually applying a reverse adjustment may not produce a file bit identical to the original file due to scalefactor clipping.		Manually applying a reverse adjustment may not produce a file bit identical to the original file due to scalefactor clipping.

			== How to use ==
			Select one or more audio files, right click, choose ReplaGain / Apply (track/album) Gain to File Content.

	== Supported formats ==		== Supported formats ==

DEATH: Past and future version history, jarsoniced Matroska support

2018-02-01T10:28:26Z

Past and future version history, jarsoniced Matroska support

← Older revision		Revision as of 10:28, 1 February 2018
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	* Standalone MP3 and MP2 files		* Standalone MP3 and MP2 files
	* MP4/M4A files with AAC, MP3 or MP2 audio		* MP4/M4A files with AAC, MP3 or MP2 audio
			* Matroska files with AAC, MP3 or MP2 audio

	It is worth noting that this feature has been extensively tested and works with audio streams in ~~MP4~~ video files.		=== Video files ===
			It is worth noting that this feature has been extensively tested and works with audio streams in video files.

			=== foobar2000 version notes ===
			MP2 codec support added in foobar2000 v1.4 beta 1.

			Matroska format support added in foobar2000 v1.4 beta 4.

	== Advantages over tag based ReplayGain ==		== Advantages over tag based ReplayGain ==

DEATH at 11:44, 31 January 2018

2018-01-31T11:44:41Z

← Older revision		Revision as of 11:44, 31 January 2018
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	== Supported formats ==		== Supported formats ==
	Standalone MP3 and MP2 files.		* Standalone MP3 and MP2 files
			* MP4/M4A files with AAC, MP3 or MP2 audio
	MP4/M4A files with AAC, MP3 or MP2 audio.

	It is worth noting that this feature has been extensively tested and works with audio streams in MP4 video files.		It is worth noting that this feature has been extensively tested and works with audio streams in MP4 video files.

DEATH: Created page with "This feature applies ReplayGain adjustment - or manual adjustment - directly to audio data on supported file formats. == No undo option - back your files up first! == There i..."

2018-01-31T11:43:55Z

Created page with "This feature applies ReplayGain adjustment - or manual adjustment - directly to audio data on supported file formats. == No undo option - back your files up first! == There i..."

New page

This feature applies ReplayGain adjustment - or manual adjustment - directly to audio data on supported file formats.

== No undo option - back your files up first! ==
There is no way to undo the adjustment. If you're not 100% confident in what you're about to do, please make backup copy of your files first. Additionally, a file will be left partially altered if the operation is cancelled halfway thru, with no way to recover.

Manually applying a reverse adjustment may not produce a file bit identical to the original file due to scalefactor clipping.

== Supported formats ==
Standalone MP3 and MP2 files.

MP4/M4A files with AAC, MP3 or MP2 audio.

It is worth noting that this feature has been extensively tested and works with audio streams in MP4 video files.

== Advantages over tag based ReplayGain ==
Files altered this way will play with their intended loudness in every software or hardware player, regardless of its ReplayGain support.

This is particularly useful for manipulating loudness of audio streams in MP4 video files, as video players rarely support ReplayGain.

== How it works ==
Each compressed audio frame contains scalefactor fields that control the loudness of decoded audio. These fields can be manipulated without having to re-encode the entire payload.
Hence, the adjustment is lossless - except for the possibility of adjusted scalefactors exceeding the finite allowed range and becoming clipped. The potential artifacts from this should not be audible - however, the adjustment should not be applied more than once to the same file.

== Opus header gain ==
In foobar2000 v1.4, a similar feature to "alter file content" was introduced for Opus files. However, it does not alter the entire audio stream, it alters Opus header gain value - which every compliant decoder is required to respect. It does not suffer from any of the issues noted above and can be fully reversed.

Opus header gain adjustment is currently supported for plain Opus files as well as Opus in Matroska.