Open evilpie opened 3 years ago
I don't think we want to be sniffing the CR3 format specifically, either positively or negatively.
However, a later comment in the linked bug indicates that Firefox is using the isom
brand to detect it as MP4.
Since that brand is not part of the MP4 sniffing algorithm, the question on the table is: should the MP4 sniffing algorithm be changed to include the isom
brand, or should Firefox be changed to remove it?
https://gitlab.freedesktop.org/xdg/shared-mime-info/-/issues/157 https://github.com/lclevy/canon_cr3/blob/master/readme.md
This caused Firefox to automatically sniff a user's CR3 file download as an MP4 video file: https://bugzilla.mozilla.org/show_bug.cgi?id=1725190.