MOV to DVMS Converter

Extract MOV audio as DVMS voice messaging format online

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QuickTime to Voice Mail

Extract MOV audio and encode it as DVMS — the self-describing CVSD variant used in legacy voice messaging systems.

No Software Needed

Convert MOV to DVMS directly in your browser. No voicemail system tools or audio processing software required on your machine.

Speech-Optimized Output

DVMS encoding prioritizes voice clarity above all. Dialogue from MOV videos transfers cleanly into the voice messaging format.

How to convert MOV to DVMS

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose dvms or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your dvms file right afterwards

About formats

MOV is a multimedia container format developed by Apple Inc. and introduced in December 1991 with the launch of the QuickTime multimedia framework. As the native format of QuickTime, MOV pioneered many concepts that later influenced the ISO base media file format (MPEG-4 Part 12) and its derivatives, including MP4. The container uses a hierarchical atom (or box) structure where each atom holds specific types of data — from video and audio tracks to metadata, text, and timecode information. MOV supports an extremely broad range of codecs including H.264, HEVC, ProRes, Apple Intermediate Codec, AAC, and PCM, among many others. This codec flexibility, combined with features like multiple track support, reference movies, and edit lists, has made MOV a staple of professional video production. The ProRes codec from Apple, commonly delivered in MOV containers, is an industry standard for post-production and broadcast finishing. The format handles both compressed delivery-quality content and high-bit-rate production-quality footage with equal capability. Precise timecode and metadata handling make MOV particularly valued in workflows requiring frame-accurate editing and reliable exchange between production tools. MOV is natively supported across all Apple platforms and widely recognized by professional editing software on all operating systems, maintaining its relevance across decades of evolving video technology.
Developer: Apple Inc.
Initial release: December 2, 1991
DVMS (Dutch Voice Messaging System) is a telephony-grade audio encoding born from the Netherlands' early push toward digital voicemail infrastructure. Deployed through KPN (formerly PTT Telecom) in the mid-1980s, the format stores mono voice data at a narrow 8 kHz sample rate, prioritizing compact message size over sonic breadth. Audio is compressed with a proprietary variant of logarithmic companding similar to European A-law encoding, squeezing recordings to roughly 8 kbit/s while keeping speech intelligible. Each file carries a small header identifying sample rate, compression type, and message metadata, which made automated routing across early PBX and voicemail systems straightforward. Although DVMS never gained traction outside Dutch telecom circles, it influenced how European carriers designed later voice messaging protocols. Tools like SoX and several legacy telephony libraries still read and write DVMS files, allowing archival playback of decades-old messages. Among its practical advantages: extremely small file sizes (a one-minute message occupies roughly 60 KB), reliable speech clarity despite aggressive compression, and a simple container layout that is easy to parse programmatically.
Developer: Dutch PTT Telecom
Initial release: 1984

Frequently Asked Questions

Why convert MOV to DVMS?

DVMS is a speech compression format used in German voicemail systems. MOV audio can be extracted and encoded for legacy voice mail platforms.

What systems use DVMS?

Legacy voice messaging systems, primarily in Germany, use DVMS for compressed speech storage. It is a self-describing variant of CVSD encoding.

Is DVMS suitable for music?

DVMS is speech-only in practice. Music from MOV videos will sound heavily degraded — this format is optimized purely for voice clarity.

What opens DVMS files?

SOX and legacy voice messaging system software handle DVMS files. The format includes a self-describing header unlike raw CVSD.

Will voice quality be clear?

DVMS encoding is optimized for speech intelligibility. Voice content extracted from MOV maintains clarity within the format specifications.