Convert

Convert videos online, free of charge. Works directly in your browser with no software installation required.

  1. Upload your video file.
  2. Container: Select an output container (mp4, mkv, mov, webm or even gif).
  3. Video codec: Choose a video codec for output (hint: h264 is most common).
  4. Audio codec: Choose an audio codec for output (hint: aac or mp3 is most common. Not supported for .gif output).
  5. CRF: Adjust output quality. 18 = highest quality but also highest filesize. 32 = highest compression, worse quality, lowest filesize.
  6. Preset: Only if h264 chosen in Video codec. Choose a speed to affect time taken vs filesize. veryfast is quick to compress but leaves a large filesize. veryslow is slow to compress but reduces filesize much more.
  7. Audio bitrate: Affects the quality of the audio and therefore filsize. 192 is a good balance of quality/size for most needs.

Examples

  • If you have downloaded a webm file, convert to the more-widely adopted mp4.
  • Create a gif from a video, to share via messaging apps.

Troubleshooting & tips

  • Adjust the quality settings to get to the filesize you need.
  • CRF values of 23-28 are a good balance of quality vs filesize.