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MP4 Converter

Convert MP4 files to WebM, MOV, AVI, MKV, GIF or MP3. Choose the target format, adjust the options and download. MP4 is the universal video container. With H.264 video and AAC audio it plays on every phone, browser, smart TV and social network, which makes it the safest choice for sharing.

  • Free, no sign-up
  • Files never leave your device
  • Powered by FFmpeg
  • No watermark
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Your files are processed on this device and are never uploaded to a server.

MP4

MP4 MPEG-4 Part 14

MP4 is the universal video container. With H.264 video and AAC audio it plays on every phone, browser, smart TV and social network, which makes it the safest choice for sharing.

MP4 converter

How to use the MP4 Converter

  1. 1

    Choose or drop your MP4 file.

  2. 2

    Pick the format you want to convert to and adjust the options.

  3. 3

    Click Convert and download the result.

What is a MP4 file?

MP4 is the universal video container. With H.264 video and AAC audio it plays on every phone, browser, smart TV and social network, which makes it the safest choice for sharing. It is a lossy format best suited to sharing, uploading to social media and playback on any device. The main drawback is that editing software sometimes prefers intra-frame formats like ProRes for heavy editing.

Frequently asked questions

Will the WebM lose quality?

Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.

Does converting MP4 to WebM re-encode the video?

Rarely: the codecs are not compatible, so the video is re-encoded. A typical MP4 contains H.264 or HEVC (H.265) video with AAC audio. Otherwise the result is VP8 with Vorbis audio.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.