Free video tool · runs in your browser

HEVC to MP4 converter

Q: Is HEVC the same as MP4?

No. HEVC is the video codec; MP4 is the container that holds it. This tool changes HEVC to H.264 and saves the result as MP4.

Q: Can I convert iPhone HEVC videos to MP4?

Yes. Open the original MOV or MP4 from your device. The converter produces H.264 MP4, with AAC audio if the original has an audio track.

Q: Will I lose quality converting HEVC to H.264?

Yes, re-encoding can lose detail. The settings use CRF 18 for High quality, 23 for Balanced and 28 for Small file. At similar visual quality, the H.264 file may be larger than the HEVC original.

Q: Does it preserve HDR and Dolby Vision?

No. The output is 8-bit H.264, without HDR tone mapping or Dolby Vision preservation. HDR footage can look different after conversion. Use a desktop editor with colour controls if you need accurate colour.

Q: Is it free, with no watermark?

Yes. The converter is free. You can download the MP4 without an account or a watermark.

Q: Are my files uploaded?

No. Your browser downloads FFmpeg and runs it on your device through WebAssembly. The video stays on your device during conversion.

Q: Is there a file size limit?

Keep files under 1 GB. A smaller file can still run out of browser memory, particularly on a phone. Test a short clip first. Use a desktop converter for large files.

Convert HEVC (H.265) to H.264 MP4 so more players can open it. This also works with iPhone HEVC recordings. The file stays on your device.

No sign-up
Free download
No watermark
Files stay on your device

Schedule this video in Upstream. Stream it to YouTube or Twitch at a set time, or keep a playlist running 24/7.

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Drop an HEVC file here or Choose a file HEVC · files under 1 GB · nothing is uploaded

What is HEVC?

HEVC is another name for the H.265 video codec. MP4 and MOV are containers. An MP4 can contain HEVC, so the .mp4 extension alone does not mean your player can decode it.

Why convert HEVC to MP4?

iPhones often save HEVC video in a MOV file. This converter changes the video to H.264 and the audio to AAC. Upstream shows a "Fix with reencode" prompt for HEVC; converting here first avoids that prompt.

How to convert HEVC to MP4

1
Add your HEVC file
Open a MOV, MP4 or MKV containing HEVC. Raw .hevc and .h265 files also work.
2
Choose quality
Use Balanced to start, High quality to keep more detail, or Small file to reduce the size.
3
Download the MP4
Run the conversion and play the result to check it. Download the H.264 MP4 when it is ready.

Conversion settings and limits

Convert to H.264

This converts the video to H.264 and the audio to AAC. A remux only changes the container and would leave the video codec unchanged.

Quality and file size

The quality settings use CRF 18 for High quality, 23 for Balanced and 28 for Small file. A lower number keeps more detail and usually makes a larger file. These settings have no effect when remuxing.

Audio tracks

Audio is converted to 128 kbps AAC. The converter keeps the first audio track; it does not mix separate tracks. Files without audio stay silent.

Browser memory

The file must be under 1 GB. Your browser needs memory for the source, the output and decoding, so even a smaller file can fail, especially on a phone. Use a desktop converter for long recordings or archives.

Keep the original

Keep the original file. The MP4 has only the first video track; it drops subtitles, extra tracks, attachments, chapters and source metadata.

Video output

Re-encoded video is opaque and 8-bit. An odd width or height may be rounded down by one pixel. The converter does not tone-map HDR or preserve Dolby Vision.

Before you convert HEVC

The file stays on your device

Your browser downloads FFmpeg and runs it on your device through WebAssembly. The video stays on your device during conversion.

Free, with no watermark

The converter is free. You can download the MP4 without an account or a watermark.

Files under 1 GB

Keep files under 1 GB. Smaller files can still run out of browser memory, particularly on phones.

Convert to H.264

This tool changes the video codec to H.264 and converts audio to AAC.

When to use it

Convert iPhone HEVC recordings.
Make H.264 video with AAC audio.
Convert before uploading to Upstream.

Use it on a 24/7 stream

Download the H.264 MP4 and add it to your Upstream library (see accepted formats and reencoding). Add it to a queue for a 24/7 live stream, or use pre-recorded live streaming for a scheduled broadcast.

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