MP4 to OGG

What extracting OGG from an MP4 involves

This pulls the audio out of an MP4 and encodes it as OGG Vorbis on your own device. Only the audio stream is decoded, so the conversion runs far faster than the video length, and the video itself, most of the file, is simply discarded rather than uploaded anywhere.

Vorbis is an open, royalty-free codec, and that legal cleanliness rather than sound quality is usually why a toolchain asks for it: game engines, open-source projects, and Linux tooling standardise on OGG because nothing about it is patent-encumbered.

• Drop the MP4; only the audio stream is decoded
• Encoding to Vorbis runs locally, at the bitrate you choose
• Download an OGG ready for engines and open toolchains

When OGG is the right choice over MP3

Pick OGG when the destination expects it: Godot and Unity load OGG natively for music and long sounds, and many open-source applications prefer it as their default audio asset. As a bonus, Vorbis tends to sound slightly better than MP3 at the same bitrate.

Pick MP3 when the file is for people rather than software; it plays on absolutely everything. For Apple ecosystems, M4A is the native choice. All three targets exist as pages, reading the same source files.