Ogg Vorbis in a few words
OGG is an open container from the Xiph.Org Foundation, and Vorbis is the open audio codec most often stored in it. Neither has licence fees, which is why OGG is popular in free software, game engines and web projects. At medium bitrates Vorbis sounds about as good as MP3 or AAC, and often better.
Who needs MP4 to OGG
- Game developers. Unity, Godot and many other engines import Ogg Vorbis as a standard format for music and sound effects. Minecraft Java Edition resource packs also use OGG sounds.
- Linux users. OGG plays out of the box on most Linux desktops.
- Web developers. Chrome, Firefox and Edge play OGG in the audio tag, which is handy for browser games.
- Wiki and open-content projects. Some of them accept only free formats such as OGG.
For example, you can record a sound with your phone camera, then convert MP4 to OGG to use it as a sound effect in a game. Use the trim fields to keep only the second you need.
Choosing the quality level
Vorbis uses quality levels instead of a fixed bitrate. Next to each level the tool shows an approximate bitrate. Lower levels are fine for speech and short effects; middle levels suit most music; high levels are for when the audio will be processed again. Because the AAC sound from the MP4 is decoded and encoded again, very high levels can't improve on the original.
Limits to keep in mind
- iPhone and Mac apps have weak OGG support. For Apple users, M4A or MP3 is safer.
- Many car stereos and older portable players don't read OGG.
- For speech or voice messages, MP4 to OPUS gives smaller files at the same clarity.
- For maximum compatibility, choose MP4 to MP3.
Everything is done in your browser, and your videos are not uploaded. You can add a whole folder of clips at once and download all the OGG files together as a ZIP.