MKV to VOX Converter
Extract MKV audio as Dialogic VOX ADPCM format online
Video to Phone System
Extract voice audio from MKV and encode as VOX ADPCM — the industry standard for Dialogic IVR platforms and telephony prompts.
Maximum Compression
VOX ADPCM at 4 bits per sample keeps telephony files tiny. Convert lengthy MKV audio into compact phone system prompts.
Secure Processing
MKV uploads are removed after conversion. VOX output files are deleted within 24 hours — your audio content stays private.
How to convert MKV to VOX
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose vox or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your vox file right afterwards
About formats
Frequently Asked Questions
VOX is the Dialogic standard for IVR and telephony audio. MKV video audio can be compressed into phone prompts and voice messages.
VOX stores 12-bit audio in 4-bit ADPCM — roughly 4:1 compression. Very efficient for storing large numbers of telephony voice prompts.
VOX is a speech-grade format. Even high-quality MKV audio is downsampled — what matters is clear speech content, not audiophile fidelity.
Yes — VOX has no file header. The telephony system receiving the file must know the sample rate and ADPCM encoding parameters.
Upload multiple MKV videos and convert them all to VOX at once. Efficient for creating telephony prompt libraries from video content.