Convert MP4 Video to HEVC on Your Device
Make a HEVC version of an MP4 in your browser for modern devices and services that explicitly accept HEVC. The source video stays on your device.
HEVC in the browser depends on your FFmpeg.wasm build: encoding is CPU-only (no GPU encoders), can be slow, and some cores omit libx265. If HEVC is unavailable, we use H.264 or MPEG-4 in MP4 instead and show a brief notice.
Drop a video here or browse · up to 500 MB
Preview (optional)
When your browser supports it, your video appears here. If preview does not load, you can still convert your file normally.
Preview is not available for this file
No worries — your video can still be converted. Set your file name and click Convert when you are ready.
Quick use cases
- Prepare an HEVC copy for newer playback or delivery systems
- Meet a delivery specification that lists HEVC
- Test an MP4 asset in a HEVC-compatible playback setup
Workflow
- Upload the MP4 video
- Choose a name for the HEVC output
- Convert the video to HEVC
- Download the HEVC file and verify it
Processing notes
- Conversion uses your device processor and keeps the source file local.
- Large or high-resolution MP4 files need more memory to encode as HEVC.
- Keeping the tab active can help a long conversion complete reliably.
Compatibility notes
- HEVC is suited to modern devices and services that explicitly accept HEVC.
- HEVC support varies by operating system, hardware, and installed codecs.
- Confirm the destination accepts HEVC, not just the codec used by the MP4.
Troubleshooting
- Conversion slow? Close processor-heavy apps or test a shorter section first.
- HEVC will not open? Try a player built for HEVC and inspect the required codecs.
- Delivery rejected? Compare the file's codec, resolution, and audio settings with the HEVC specification.
MP4 to HEVC converter FAQ
Why convert MP4 to HEVC?
Convert when a player, editor, archive, or delivery system explicitly requires HEVC instead of MP4.
Does the MP4 leave my device?
No. The conversion runs locally on your device rather than sending the source video to a processing server.
How do I verify the HEVC output?
Open it in the destination player or editor, then check picture, sound, duration, and synchronization before delivery.