Mp3DirectCut
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mp3DirectCut is a lossless editor for
MP3 MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg. It was designed to greatly reduce the amount ...
(and to a degree,
MP2 MP2 or MP-2 may refer to: Aviation * The second terminal of Marseille Provence Airport * Chyetverikov ARK-3 flying-boat Firearms * German Army designation for the Uzi * MP-2 machine pistol Science * MP 2, an abbreviation for a zone during t ...
and
AAC AAC may refer to: Aviation * Advanced Aircraft, a company from Carlsbad, California * Airborne aircraft carrier, a type of aircraft * Alaskan Air Command, a radar network * American Aeronautical Corporation, a company from Port Washington, New ...
) audio files, able to provide cuts and crops, copy and paste, gain and fades to audio files without having to decode or re-encode the audio. By modifying the ''global gain'' field of each frame of MPEG audio, the volume of that frame can be modified without altering the audio data itself. This allows for rapid, lossless MP3 audio editing that does not degrade the data from re-encoding. mp3DirectCut provides audio normalization and pause (silence) detection, and can split long recordings into separate files based on cue points in the audio, such as those provided by pause detection. mp3DirectCut can also record audio directly to MP3 from the computer's sound card input. All audio operations are performed using frame manipulation so, as such, mp3DirectCut is not a waveform editor. Audio clean-up such as click, hiss and noise removal is not possible.


Features

* An MP3 file can be edited without transcoding. * Cut, copy, paste, and volume change operations are provided; edits can be previewed, including a command that plays a segment without a selected region (previewing a cut) * Audio normalization and pause detection * MP3 recording with ACM or
LAME LAME is a software encoder that converts digital audio into the MP3 audio coding format. LAME is a free software project that was first released in 1998 and has incorporated many improvements since then, including an improved psychoacoustic ...
encoder (not bundled) * Fast MP3 visualization * Supports Layer 2 (
DVD The DVD (common abbreviation for digital video disc or digital versatile disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any ki ...
/ DVB audio) * Includes a
tag editor A tag editor is an app that can add, edit, or remove embedded metadata on multimedia file formats. Content creators, such as musicians, photographers, podcasters, and video producers, may need to properly label and manage their creations, adding ...
for
ID3v1 ID3 is a metadata container most often used in conjunction with the MP3 audio file format. It allows information such as the title, artist, album, track number, and other information about the file to be stored in the file itself. ID3 is a ''d ...
tags * Cue sheet support with auto cue (track division by time values) * Track splitting with filename and ID3v1.1 tag creation *
VU meter A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the Signal-to-noise ratio, signal level in audio equipment. The original design was proposed in the 1940 Institute of Radio Engineers, IRE pap ...
, bitrate visualization * Supported on all versions of
Microsoft Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
from 95 through 7; certain modes can be invoked from the command line * Unobtrusive: The installation file (as of October 2020) is 303 Kbytes; the installed program occupies a single directory (with one subdirectory for non-English help files, which can be deleted if not needed); the program does not modify the Windows Registry; a user's manual and a page of
Frequently Asked Questions A frequently asked questions (FAQ) list is often used in articles, websites, email lists, and online forums where common questions tend to recur, for example through posts or queries by new users related to common knowledge gaps. The purpose of a ...
is included in the installation * The edited file can be used as a ringtone on mobile phones * Newer versions can also edit raw
AAC AAC may refer to: Aviation * Advanced Aircraft, a company from Carlsbad, California * Airborne aircraft carrier, a type of aircraft * Alaskan Air Command, a radar network * American Aeronautical Corporation, a company from Port Washington, New ...
audio files


Limitations

;Granularity limitations * Edit positions in the file can be placed only at the start of an MP3 frame (of which there are typically about 38 per second). * Gains and fades are limited to 1.5  dB steps, as they are achieved by modifying the value of the MP3 frame's 8-bit global gain field. ;Size limitations * The maximum file size that the program is able to process is 4 GB. This is equivalent to about 28 hours of music in an MP3 file encoded at 320 kbit/s. ;Unimplemented features *
ID3v2 ID3 is a metadata container most often used in conjunction with the MP3 audio file format. It allows information such as the title, artist, album, track number, and other information about the file to be stored in the file itself. ID3 is a ''d ...
tags cannot be read, and if they are written out, they contain the incorrect song length if the length is modified. * The documentation warns that navigating a song does not, in all cases, land on the start of an MP3 frame. The documentation does not guarantee correct results in all cases. * The documentation is adequate but does not cover all cases. ;Possible introduction of error * Increasing the audio volume can lead to distortion if, on playback, multiplying the audio data by the global gain may increase the volume past its
clipping Clipping may refer to: Words * Clipping (morphology), the formation of a new word by shortening it, e.g. "ad" from "advertisement" * Clipping (phonetics), shortening the articulation of a speech sound, usually a vowel * Clipping (publications ...
threshold. Audio recordings that use Compressed audio to cap the overall volume may have already adjusted the global gain field. This may limit the ability to further amplify the recording with MP3DirectCut without causing clipping. ;AAC/MP4 * To work on AAC files, an extra library (libfaad2.dll) needs to be installed * Raw AAC audio is supported, but not AAC audio inside
MP4 MP4 (formally MPEG-4 Part 14), is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows ...
container files * If MP4 audio files need to be processed, the AAC audio stream needs to be extracted first, e.g. with mp4box (Simply renaming an .MP4 file to .AAC does not work, since a simply renamed file still contains an MP4 container file header).


Reviews

* http://www.softpedia.com/get/Multimedia/Audio/Audio-Editors-Recorders/mp3DirectCut.shtml * https://www.fosshub.com/mp3DirectCut.html * http://www.techspot.com/downloads/530-mp3directcut.html


See also

*
MP3Gain MP3Gain is an audio normalization software tool. The tool is available on multiple platforms and is free software Free software, libre software, libreware sometimes known as freedom-respecting software is computer software distributed open-so ...
, a lossless
multi-platform Within computing, cross-platform software (also called multi-platform software, platform-agnostic software, or platform-independent software) is computer software that is designed to work in several computing platforms. Some cross-platform softw ...
MP3 ''global gain'' normalizer using
ReplayGain ReplayGain is a proposed technical standard published by David Robinson in 2001 to measure and normalize the perceived loudness of audio in computer audio formats such as MP3 and Ogg Vorbis. It allows media players to normalize loudness for in ...
.


References


External links


mp3DirectCut homepage
{{DEFAULTSORT:Mp3directcut Audio editors