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When you need MP4 to OGG
MP4 is the standard video container for camera recordings, webinars and clips from the web. When you need audio from such a file for a game project, open-source application, Linux program or educational material under a free licence - OGG is the format to choose. It is an open format with no patent restrictions: it can be used in commercial and non-commercial projects of any scale without royalty payments.
When audio is extracted, the video stream is not saved. Only the audio remains in OGG Vorbis format - a compact file with tag support and good quality at moderate file size.
What changes after conversion
You get the audio track from the MP4 as an OGG file without video. OGG is a lossy format, like MP3 and AAC. Sound quality depends on the source recording: conversion does not improve audio and does not remove noise or interference that were present in the video.
Because audio in MP4 is usually stored in a different format (AAC), conversion involves re-encoding - a lossy operation. At a good quality level the difference is usually inaudible, but it is worth knowing.
If the MP4 has no audio track - for instance, a silent timelapse - there is nothing to extract, and conversion will not proceed.
When this is especially useful
- Preparing sound effects or music from video for integration into a game project on Unity, Godot or another engine.
- Publishing audio material on Wikipedia or Wikimedia Commons, which only accept open formats.
- Embedding audio on a website with support for Firefox and Chrome without depending on closed codecs.
- Using audio in an open-source application or Linux program without licensing concerns.
- Preparing educational material for a platform under a free licence.
Common tasks and search scenarios
- convert MP4 to OGG for a Unity game;
- extract audio from video to OGG for Godot;
- prepare audio from MP4 for Wikipedia;
- get OGG from a video lecture for Linux;
- pull audio from MP4 to OGG for a website;
- convert video to OGG for an open-source project;
- convert a webinar recording to OGG.
What to check before converting
- Make sure the video has audio and it sounds the way you need.
- Check the volume and any interference: the OGG will reflect these without changes.
- If the clip has multiple audio tracks, the primary one will be included in the output.
- Keep in mind that converting from MP4 to OGG requires re-encoding - a lossy operation.
Format and conversion limits
OGG is a lossy format. Conversion does not improve the source audio. Because MP4 and OGG use different codecs, re-encoding happens during conversion, which adds a small amount of loss.
The main compatibility limitation: Safari on iPhone and Mac does not support OGG natively. Users on Apple devices need an alternative format (AAC or MP3). For web projects, both options are usually provided.
Old players and car stereos generally cannot read OGG. If the file needs to open on any device, choose MP3.
If the file is protected or damaged, conversion may not work.
Related tasks
For maximum compatibility with any device - from old players to Apple - MP4 to MP3 is the right choice. For embedding audio on a website with Safari support, use MP4 to AAC. If you need an open format that is more modern and compact, consider MP4 to OPUS.
What is MP4 to OGG conversion used for
Audio for game projects
Music, voice lines and sound effects from video recordings are converted to OGG for integration into games. The open licence removes any royalty concerns for commercial distribution.
Audio for Wikipedia and Wikimedia
Lectures, music illustrations and voice recordings from video are converted to OGG - the only audio format accepted by Wikimedia encyclopedic resources.
Audio for open-source and Linux applications
Audio material for projects under a free licence is saved as OGG - the format is included in Linux distributions by default and requires no non-free packages.
Web audio for Firefox and Chrome
The audio track from a video is saved as OGG for embedding on a website through HTML5 audio - browsers support the format without third-party codecs.
Educational material under a free licence
Audio from educational videos is saved as OGG for publishing on platforms under Creative Commons or similar open licences.
Tips for converting MP4 to OGG
Add a fallback format for Safari
When publishing OGG on a website, provide an MP3 or AAC for Safari users, which does not support OGG natively. An audio tag with two sources will pick the appropriate format automatically.
OGG for open source, AAC for Apple
If the file goes into a game or open-source project, choose OGG. If the file is intended for iPhone users, choose AAC or MP3.
Keep the original if you are not sure
After audio is extracted, the video cannot be recovered from the OGG. If you might need the full clip, keep the original MP4 separately.