Fast MPEG audio editing
Cut MP3 and AAC fast and easily
mp3DirectCut is a fast and extensive audio editor for encoded MP3 and AAC. Without re-encoding directly cut, crop, split and join your tracks, create fades on MP3 and much more. Direct lossless editing saves encoding time and preserves the audio quality of encoded tracks. The built in recorder creates MP3 on the fly. With Cue sheets, Pause detection or Auto cue you can easily divide long files.
Direct data copying, no re-encoding
Non-destructive cut, copy, paste
Level change, fade, normalize MP3
MP3 recording/encoding with ACM or Lame
Fast MPEG visualisation and easy navigation
AAC support · MP2 support
Batch processing · Cue Sheet support
Pause detection · Auto cue by time values
Track splitting with filename and tag creation
Trim · Crop · Fast play · Loop play
ID3v1.1 tag editor, ID3v2 tag keeping
VU meter · bitrate visualisation
Level activated recording
Command line usage
Download mp3DirectCutVersion 2.32 · 2020-12-14 · 304 KB · Simple installer (sfx zip) · Freeware MD5 checksum: d907ee8d75a404b87e585bc192aff71c
|2.32||Tooltip glitch fixed · Timeline overflow fixed · Audio display glitches fixed|
|2.31||Overdrive check removed (inacurate detection possible) · Minor corrections|
|2.30||Cue sheet load problem fixed · Longer delay time for tooltips · Check for overdrive function (Normalize) · Fixed garbage bytes on VBR header creation · Some corrections|
|2.29||Level activated recording feature · Graph level range increased · Some more improvements|
|2.28||Possible startup crash fixed · Some minor improvements and corrections|
|2.27||Language files in UTF-8 · Layout for smaller window width · Lots of minor improvements|
|2.26||UTF-8 character encoding for cue, project and ini files · Internal ANSI / Win98 compatibility removed · Checking 4GB size limit · Cut noise mute function · Settings button in the toolbar · Graph font localization issues fixed · Some other corrections and improvements|
|2.25||Append by file dropping · Multiple file dropping · Re-encoded save mode · Limit track time option for Batch · Gain change detection on cutting · Volume slider in text button layouts|
|2.24||Split bug fixed · Split and Batch dialogs improved · Cue flag functions|
|2.23||MP4 demuxing by ffmpeg · VBR header bug fixed · Total track time for big timer|
Windows or Linux with Wine
For MP3 play/cut: MP3 ACM codec (present in Windows) or mpglib.dll
For AAC play/cut: libfaad2.dll (32 bit)
For MP3 recording: encoding ACM or Lame encoder DLL (32 bit)
For MP4 demuxing: ffmpeg.exe
FAQ - Frequently asked questions
In mp3DirectCut mark a selection of the part you want to remove with one of these ways: Either add it with a left mouse button click into the graph position and then adjust the edges with the right button. Or use the buttons "Set begin" and "Set end" (or the keys B and N) to set the beginning and the end of the selection to the current play position (yellow line). Adjusting also works over a long distance after seeking a new position. To prelisten the cut press the "Prelisten AS CUT button" (or F9). To fine adjust the selection you can also use the keys 1-4. To cut press the Cut/Cue button in the lower panel (or the Del key). Use normal play to control the result.
The easiest way is to use "Simple fade" or "Two-stage fade". Point to the position where a fade should end (fade in) or start (fade out). In the Edit menu choose a fade option. Adjust the fade by dragging the grey handle(s): Left button up/down for level, right button left/right for position. With fade curves you can create more complex fades. Each cue can be used for fading. A cue is created by pressing Cut on a zero-length selection (dotted line). Gain adjustment is only possible for MP3, not for AAC and MP2.
There are several methods: 1. Drag a bunch of files to the program. Usually the file under the pointer will be used first, this is file browser dependent. 2. Drag single files to the audio graph of the program, they will be appended. 3. Use the virtual Cut, Copy and Paste options with a second program instance. "Save all audio..." will create the combined track. Important: The audio parameters (format type, samplerate, stereo mode, CRC) must match. Also the Batch feature supports joining of tracks.
To play AAC files (which also are the audio tracks of MP4 in most cases) mp3DirectCut needs the free "libfaad2.dll". The file must be placed in the mp3DirectCut folder. Recommended for downloading this DLL is the RareWares page (see links on the "More" page). MP4 audio can be edited directly if the command line program "ffmpeg.exe" is present and mp3DirectCut knows its location (select in the settings). On opening an MP4 it will be "demultiplexed" to an AAC. It will be saved only as AAC without muxing it back to MP4.
The installer is a selfextracting ZIP file. It simply copies the files to the selected folder and creates a desktop icon. To copy the files to the default "Program files" folder, it is usually needed to run the Installer "As administrator" (right button). No admin rights are needed if you install the program to a folder where you have write access. The files of the distribution can also be extracted with an archive utility (e.g. 7-Zip). A Start menu entry must be created manually. File type associations can be created within the system's file manager. If your system complains about malware and you downloaded the original distribution file, this should be false positive by heuristics. You could try to update the signatures of your security software. To make sure that you have the original distribution file, check the MD5 sum below the download links. You can also check the executable or the distribution file on VirusTotal.
As it shows fast MP3/AAC data instead of PCM, the main MP3 graph does not show the real audio level. On MP3 it usually contains only higher frequencies. It can also be too high or too low over the whole file. In these cases the shown height can be adjusted in the Options menu (or Numpad +/-). In rare cases the display shows nothing. Silences may appear with a high level in some cases. The bypassed decoding makes mp3DirectCut so fast. The correct audio level is always shown while play with the VU meter on the right.
Copyright © 2021 Martin Pesch