Stem01
Start with your original recording
If a clip is your own, find the local recording or project export you used to make the video. You can also use an audio file a creator has explicitly provided for reuse. The converter accepts local audio; it does not fetch, rip or download media from YouTube.
02
Isolate the passage before converting
Export the clearest part as MP3, WAV or M4A. Keep it within 60 seconds and 25 MiB. Prefer a solo performance to a clip that has dialogue, sound effects and background music mixed together.
03
What you can download
The result is a single editable MIDI track with estimated notes. If you only have a video URL, you will need an authorized local audio copy before you can use this workflow.