OGG to MIDI Converter Online
Turn OGG or Vorbis music, game, and web audio into editable MIDI notes. MelodyTrace normalizes the OGG input, transcribes its audio, and gives you a piano-roll result to review.
- OGG / Vorbis
- OGG / Vorbis audio
- Editable MIDI
Click a note to hear it
How it works
Upload OGG
Choose OGG or Vorbis music, game, and web audio up to 50 MB and 10 minutes. OGG / Vorbis audio
Review the transcription
Play the detected notes on the piano roll, compare them with the source, and adjust sensitivity, minimum note length, or pitch bends when needed.
Edit and download MIDI
Download the result immediately, or sign in to correct notes and export notation for the next step in your music workflow.
Formats & limits
- Input formats
- OGG / Vorbis
- Output
- MIDI (.mid)
- File limits
- 50 MB · 10 min
- Price
- Free · no sign-up
Preparing OGG for a cleaner MIDI result
- Use the highest-quality OGG source you have, especially for quiet instruments or sustained notes.
- A clear single melody, vocal, or instrument line usually needs less cleanup than a dense finished mix.
- Trim long silence and unrelated sections before uploading so the transcription focuses on the passage you need.
- Layered game ambience and sound effects can create extra notes; isolate the musical stem when possible.
Frequently asked questions
How do I convert OGG to MIDI?
Upload the OGG file — OGG or Vorbis music, game, and web audio all work — and it's normalized and sent through the same Basic Pitch transcription engine used for every audio source on this site; there is no separate OGG-specific model, so the file format itself has no bearing on transcription quality, only on how the audio decodes going in. The result lands on an interactive piano roll where you can play it back against the source, adjust detection sensitivity or minimum note length, and re-transcribe without uploading the file again if the first pass needs tuning. Once it looks right, download the generated .mid file directly with no account required at all, or sign in first to unlock full note editing plus exporting the result as MusicXML or PDF sheet music alongside the plain MIDI download.
Does converting OGG preserve the original sound?
No — and that's expected, not a limitation of this specific tool. MIDI stores detected notes, timing, and velocity rather than the original waveform, timbre, or instrument sound, so converting OGG to MIDI necessarily discards the audio itself, the same way any audio-to-MIDI transcription does regardless of source format or how lossless it is. What you get back instead is a performance you can replay with any instrument sound of your choosing, edit note by note on the piano roll, transpose to a different key, or hand off to a DAW as a fully editable track — that trade-off, exchanging the fixed original sound for flexible, editable note data, is precisely what makes MIDI useful in the first place, rather than functioning as just another audio copy in a different container.
What OGG files work best?
Use the highest-quality OGG source you have, especially for quiet instruments or sustained notes. Layered game ambience and sound effects can create extra notes; isolate the musical stem when possible. Beyond those format-specific points, the same rule applies as for any source: a single clear melody or solo instrument transcribes far more accurately than a dense mix, since the underlying transcription model was evaluated on isolated, largely monophonic material rather than multiple instruments layered together in a full production. If a first attempt comes back with noticeably more wrong or extra notes than you expected, that's usually a sign the source has more going on musically than a solo line — try isolating just the part you actually need, either by re-recording it alone, muting other tracks before bouncing a mix down, or using a separate stem-splitting tool first, then re-upload that isolated part instead of the full mix.
What are the upload limits?
Each file can be up to 50 MB and roughly 10 minutes long, a ceiling that comfortably covers the vast majority of recordings and stems people upload here without needing to trim anything first, since most individual songs, practice takes, or short clips fall well under both limits. Short, focused passages finish transcribing sooner and are noticeably easier to verify against the original on the piano roll afterward, simply because there's less material to scroll through and compare note by note before you trust the result. If your source runs longer than that ceiling, cutting it down to the specific section you actually need — rather than uploading the full file and discarding most of the transcribed result afterward — is usually both the faster and the more accurate path, since trimming also removes whatever unrelated audio elsewhere in the file might otherwise confuse the transcription.
Is OGG lossy or lossless, and does that matter here?
OGG is a container format, and it most commonly wraps the Vorbis audio codec, which is lossy — like MP3, it permanently discards some audio detail to shrink the file, just generally more efficiently at a given bitrate than MP3 manages. For transcription purposes, that means a low-bitrate OGG export can lose the same kind of fine pitch and timing detail that hurts MP3 transcription accuracy, particularly for quiet passages or sustained notes where subtle harmonic content matters. A high-bitrate OGG export, on the other hand, is close to indistinguishable from a lossless source for this purpose, so if you have a choice when exporting, favor the higher bitrate over the smaller file whenever transcription quality matters more than storage space.
Why do games and web apps use OGG instead of MP3?
Mainly licensing and efficiency. Vorbis is a royalty-free, fully open format that anyone can implement without paying patent fees, unlike the MP3 codec, which was covered by patents for years and required licensing costs many smaller studios and independent developers wanted to avoid entirely. On top of that, Vorbis tends to sound noticeably better than MP3 at the same bitrate, which matters when a game engine is bundling hundreds of sound effects and music tracks and needs to keep the total install size down. That combination — no licensing fees plus better compression efficiency — is also exactly why game soundtrack rips and web-audio assets are one of the more common source types people upload to this converter.