MP4 .mp4
A multimedia container. This converter writes H.264 video and AAC audio for broad compatibility.
MP4 file format guideMP4 to OPUS converter
Convert MP4 (.mp4) to OPUS for free. Choose files, review the available settings and download your results. No account needed.
to
Add files
Drag files here or choose them from your device.
Opus .opus
An efficient audio codec suited to speech and music.
OPUS file format guideHow to convert MP4 to OPUS
- Select MP4 files from your device or drag them into the converter.
- Check the OPUS output. Open conversion settings if you want to make adjustments.
- Convert, compare the original and result, then download your files.
Quality, compatibility and file limits
Trim a clip, resize the frame, or adjust playback speed before export. Video conversion re-encodes supported streams; subtitles, extra audio tracks, and container attachments are not preserved. Audio output requires an audio track in the input.
Processing uses your device when possible and our servers when required. Browser files are limited to 256 MB each; server conversions to 64 MB; browser spreadsheets to 32 MB. Previews show supported content and do not guarantee identical rendering in every application.