Decodes the video containers your own browser can decode, because extraction runs through the Web Audio API: MKV and AVI are not guaranteed.
Library
Reading your local library…
Extract Audio from Video.
Drag & drop files or folders
or click to browse
Real client-side encoded formats
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
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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
60
61
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
Video to Audio Extractor
Video to Audio Extractor
Extract audio from supported video files using only the output formats backed by real encoders.
Supported formats: WAV AIFF MP3 44.1 kHz 48 kHz 88.2 kHz 96 kHz 192 kHz 16-bit 24-bit 32-bit Float
What this tool actually does
Extract audio from supported video files using only the output formats backed by real encoders.
Writes only WAV, AIFF and MP3, the three containers with a real encoder in this build; the remaining outputs the interface lists produce no bytes of their own.
Resamples to 44.1, 48, 88.2, 96 or 192 kHz through an OfflineAudioContext, falling back to linear interpolation when that context is unavailable.
Exports WAV at 16, 24 or 32-bit float, keeps 16 or 24 bits in AIFF and ignores PCM depth entirely for MP3.
Optional peak normalisation drives the loudest sample to −0.1 dBFS when you tick the checkbox.
Applies triangular TPDF dither only on the 16-bit WAV path; AIFF and MP3 are never dithered.
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.
Spectrogram & Quality · ES
DJ Audio Formats: WAV, FLAC, MP3 and Detecting Fake Lossless Files with Spectrograms
Differences between WAV, AIFF, FLAC, MP3 and AAC, plus how to use spectrograms to spot fake lossless files and misleading transcodes (Academy guide in Spanish).
Read guide (ES)
Lossless Verification
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
Related tools
Complementary utilities to finish preparing your tracks.