I think we should enable support to upload Matroska and WebM (WebM being a profile of Matroska, using VP8 video and Vorbis audio).
Matroska files are much more suitable for re-use (especially editing) than already supported OGG container format.
File extensions/mime types for Matroska:
.mka audio/x-matroska
.mkv video/mkv video/x-matroska
.mk3d video/x-matroska-3d
File extensions/mime types for WebM:
.webm audio/webm
.webm video/webm
http://www.matroska.org/technical/specs/notes.html
http://www.webmproject.org/code/specs/container/
Version: unspecified
Severity: enhancement
Whiteboard: aklapper-moreinfo