Convert MP4 to OPUS
Pull the soundtrack out of any MP4 video and save it as OPUS in seconds. Conversion happens inside your browser, so even large or private videos are never uploaded.
Drop MP4 files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert MP4 to OPUS
- Click "Choose files" or drag your MP4 videos onto the page.
- Make sure "OPUS" is selected as the output format (128 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your OPUS files.
Why convert MP4 to OPUS?
OPUS files are much smaller than video and play on any music player, phone or car stereo.
OPUS is best for voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes. All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC.
Will I lose quality?
The audio is decoded from the MP4 video and encoded to OPUS. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for OPUS.
MP4 vs OPUS
| MP4 | OPUS | |
|---|---|---|
| Full name | MPEG-4 Video | Opus Interactive Audio Codec |
| Type | video | lossy |
| Best for | videos from phones, YouTube and social media | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes |
| Typical size | varies | ~0.9 MB at 128 kbps per minute |
| Compatibility | Universal video format. | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. |
| Developed by | - | IETF / Xiph.Org (2012) |
MP4 to OPUS: questions
How do I convert MP4 to OPUS?
Open this page, add your MP4 file, make sure OPUS is selected as the output format and click Convert. Your OPUS file is ready to download in seconds.
Will converting MP4 to OPUS lose quality?
The audio is decoded from the MP4 video and encoded to OPUS. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for OPUS.
Is this MP4 to OPUS converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many MP4 files to OPUS at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between MP4 and OPUS?
MP4 (MPEG-4 Video) is a video format, the most common video format. We extract its soundtrack so you can save just the audio. OPUS (Opus Interactive Audio Codec) is a compressed (lossy) format: the most efficient modern lossy codec. Opus delivers excellent quality at very low bitrates for both speech and music.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MP4 to OPUS converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.