Drop a .musicxml or .mxl file and get a MIDI file of the score, every part its own track, with the tempo changes and dynamics played.
Your file never leaves your computer. It is converted here, in this tab.
SheetVideo converts MusicXML (.musicxml, .mxl and .xml) to standard MIDI, keeping every part as a track, tempo and time signature changes, and dynamics as note velocity. The file is read in your browser and never uploaded: there is no server on the other end that sees it.
MusicXML is how notation programs pass scores to each other; MIDI is what DAWs, practice apps and keyboards play. Converting is how a MuseScore download becomes a backing track, or a part to practise along with at half speed.
Dynamics in the score set how hard each note is played, so a pp passage really is quiet.
The file is read in your browser and never uploaded: there is no server on the other end that sees it.
SheetVideo puts sheet music and tab on videos of people playing, lined up with the recording by listening to it. To do that it has to read every score format there is, and write them out again. These pages are those readers and writers, opened up. The video is the part that is paid, and only for full-length exports without the small mark.