[erbbysam]

Yup, this works - https://github.com/erbbysam/webRTCCopy/blob/master/client/js... (not the cleanest code)

You can then use idb.filesystem.js to add api support for firefox etc. Search the file above for "is_chrome" for a few idb.filesystem.js-specific quirks.

Looking at that page, it looks like firefox will ship with support in version 50?

[szimek]

I'm using idb.filesystem.js in https://www.sharedrop.io, so that only very small part of the transferred file is stored in memory, but then without asking users for permission (i.e. using non-persistent storage) you "only" get ~4GB (not sure exactly, I tested it with files up to 1.5GB).