.dash file format inquery

[a-raccoon]

I understand DASHEncoder uses the file extension .dash, and I wish to inquire about its content and use.

The reason I ask is because I wish to propose a media container file format using the .dash extension, which is simply a zip archive container containing DASH video/audio media of various bitrates that have been downloaded for offline storage and viewing. The purpose of the .dash extension simply as a means to instruct media players how to interpret the zip container contents; loading each of the Video and Audio files as selective 'video angles' and 'audio channels' respectively.