Processes MP4 and MOV containers only: the audio stripper parses the ISO-BMFF boxes (moov, mdat, trak, hdlr) and returns an error for any other format, even though the file picker accepts more extensions.
Library
Reading your local library…
Mute Video.
Drag & drop files or folders
or click to browse
Smart DJ File Renamer.
Deterministic batch renamer for DJ library tracks based on metadata tags and audio analysis.
Load audio files, folders or playlists
Inspect metadata tags, detect messy names, and batch rename automatically or with manual inline edits.
Drop your audio tracks here or click to browse
Lossless (WAV, FLAC, AIFF) and Lossy (MP3, AAC, M4A) · Local Processing Only
Duplicate Detector & Safe Archiving.
Identify identical and alternate quality duplicate tracks in your collection.
Drag & drop files or folders
or click to browse
Detect exact duplicates (SHA-256) and acoustic matches with quality recommendations
←Home
DJ Database & Playlist Converter.
Convert Rekordbox, Traktor, VirtualDJ and Serato collections 100% locally.
Need to convert a USB flash drive in-place without duplicating audio?
Use DJ USB Converter In-Place →Source Library
or click to browse
Supports Rekordbox .xml, Traktor .nml, and VirtualDJ .xml
←Home
DJ USB Converter.
Transmute DJ USB drives between Pioneer, Denon Engine OS and Serato in-place without copying or duplicating audio files.
Looking to convert desktop collection files (.xml, .nml, .crate, .sql)?
DJ Library ConverterIntegrity Guarantee & Safe Backups
- Zero audio bytes duplicated: MP3, WAV, AIFF and FLAC files remain untouched in their original locations on the drive.
- Automatic pre-write backup: Before any database file is updated, an exact copy is verified and saved to Deckmatics Backups.
- Explicit access: The browser requests read/write permissions only when you explicitly click the button below.
DJ USB Storage Media
Transmutes existing DJ USB drives in-place without copying or duplicating audio files.
Connect or select your USB drive to inspect its DJ topology.
Pioneer, Engine Library and _Serato_ folders will be checked to provide cross-compatibility without touching your audio tracks.
Multitrack Editor.
BAR1.1.1
TIME00:00.000
BPM
SIG4/4
Snap
Grid
TRACKS (2)
1(0:00)
2
3
4
5
6
7
8
9(0:16)
10
11
12
13
14
15
16
17(0:32)
18
19
20
21
22
23
24
25(0:48)
26
27
28
29
30
31
32
33(1:04)
34
35
36
37
38
39
40
41(1:20)
42
43
44
45
46
47
48
49(1:36)
50
51
52
53
54
55
56
57(1:52)
58
59
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62
63
64
65(2:08)
66
67
68
69
70
71
72
73(2:24)
74
75
76
77
78
79
80
81(2:40)
82
83
84
85
86
87
88
89(2:56)
90
Track 1
PanC
Volume-3.0 dB
Track 2
PanC
Volume-3.0 dB
MMASTER
BUSPanC
Volume0.0 dB
MASTER OUTPUT BUS|0.0 dB
Empty Project Session
Drag and drop audio files here or use the buttons below to import tracks.
Audio Editor.
Drag & drop files or folders
or click to browse
Studio Audio Recorder.
High-fidelity audio recording for microphones, DJ USB sound cards or system audio with peak and RMS metering
IDLE
00:00.000
PEAK VUMETER
L
-inf
0 dB-3-6-12-18-24-36-48-60 dB
R
-inf
48.0 kHz · 24-bit PCM
Mute Video Online
Remove the audio stream from supported video files with the exact container behavior implemented by the tool.
Supported formats: MP4 MOV
What this tool actually does
Remove the audio stream from supported video files with the exact container behavior implemented by the tool.
Removes the audio tracks without re-encoding the video: it deletes only the audio trak boxes, rewrites the moov size and adjusts the stco/co64 chunk offsets, so video frames are copied untouched.
The file is read with file.arrayBuffer() and the output is built as an in-memory Blob — there is no network request anywhere in the process.
The output keeps the source container and downloads as "name_muted.ext"; if the video has no audio track, the same buffer is returned unchanged.
Real-world use cases
What people actually solve with this converter before they play live.
Prepare tracks before a DJ set.
Fix or process files without opening a full DAW.
Keep the workflow focused on the specific task instead of a general-purpose editor.
Recommended Academy guides
Sample rate, bit depth, codecs and booth errors explained with rigour.
Content Production · ES
Producing DJ Content: Hooks, Vertical Video and Batching
How to produce video for social media as a DJ: visual and textual hooks, vertical video, multi-camera, capturing master and ambience, subtitles, templates and batching (Academy guide in Spanish).
Read guide (ES)
Lossless Verification · EN
Fake Transcodes: How to Detect Counterfeit MP3 320 and Upsampled FLAC
Why converting 128 kbps audio to WAV or FLAC never restores lost frequencies, and how to spot phantom cutoffs on a spectrogram.
Read guide (EN)
Related tools
Complementary utilities to finish preparing your tracks.
Video to Audio Extractor
Extract audio from supported video files using only the output formats backed by real encoders.
Open tool
Universal Browser Audio Converter (Lossless & Hi-Res)
Convert between WAV, MP3, FLAC and AIFF directly in your browser with studio-grade PCM resampling and bit depth control.
Open tool