Support for multiple audio-track export
@chouet
Submitted by chouet Assigned to chouet @chouet
Description
In a Pitivi project, all the audio tracks are always mixed up into one track, at export time.
One possibly great feature: to be able to group several individual tracks - or mark them to be rendered into one "output track", and several others to be rendered into another "output track"... enventually supporting an unlimited number of distinct output tracks.
Of course this feature needs the ability to render a project to a format containing multiple audio tracks, like webm, matroska or any other.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=668179