Battery died mid-take or the card got pulled? The footage is still there — it just never got the index that tells a player where the frames are. footage.repair rebuilds that index entirely in your browser and hands back a normal, playable file. Nothing uploads, ever — a 100GB file would take longer to upload than it took to film. Free preview first, so you know it worked before paying. Supports Sony XAVC-S/XAVC-HS, Panasonic .mdt, and DJI Osmo Action.