MOV to VOX Converter

Extract MOV audio as Dialogic VOX ADPCM format online

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QuickTime to Telephony

Extract voice from MOV video and compress it as VOX ADPCM — ready for Dialogic IVR systems and telephone prompt libraries.

Small File Size

VOX ADPCM keeps telephony audio compact at 4 bits per sample. MOV audio shrinks to efficient phone system prompts.

Online Processing

All extraction and encoding runs on our servers. No Dialogic tools or QuickTime software needed — just upload MOV and download VOX.

How to convert MOV to VOX

1

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

2

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

3

Let the file convert and you can download your vox 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
VOX is a headerless audio format built around Dialogic ADPCM encoding, widely adopted in telephony, interactive voice response (IVR) systems, and voice mail platforms since the 1980s. Each audio sample is compressed into 4 bits using an algorithm developed by Oki Electric and implemented in hardware on Dialogic Corporation's telephony interface cards. VOX files typically use a sampling rate of 6000 or 8000 Hz, producing extremely compact recordings optimized for speech intelligibility rather than musical fidelity. Because the format carries no header, playback software must know the sample rate and encoding parameters in advance — a trade-off that reduces overhead but demands careful file management. The primary advantage of VOX is storage efficiency: a one-minute voice recording at 8 kHz occupies roughly 240 KB, making it practical for systems storing thousands of prompts. Dialogic ADPCM conforms to the ITU-T G.726 standard, ensuring interoperability across telephony equipment from different vendors. Even as modern call centers migrate to IP-based systems with codecs like Opus, vast libraries of VOX recordings persist in legacy IVR deployments and compliance archives worldwide.
Initial release: 1983

Frequently Asked Questions

Why convert MOV to VOX?

VOX is the Dialogic ADPCM standard for telephony and IVR. Converting MOV audio to VOX creates phone prompts from QuickTime video content.

How compact are VOX files?

VOX achieves roughly 4:1 compression with 4-bit ADPCM. Telephony prompts extracted from MOV take minimal storage on your phone system.

Is VOX headerless?

Yes — VOX is raw ADPCM without headers. Your telephony platform needs to know the sample rate (typically 8kHz) to decode it properly.

Will QuickTime audio sound good?

VOX is speech-grade. Voice from MOV sounds clear on phone systems, but music quality is noticeably reduced by the ADPCM compression.

Can I batch-convert MOV files?

Upload multiple MOV videos and convert them to VOX simultaneously. Build a complete set of telephony prompts from video audio quickly.

MOV to VOX Quality Rating

4.8 (4 votes)
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