It refers a standard format defined by the Open Effects Association founded by Assimilate, Autodesk, Digieffects, FilmLight, The Foundry, Genarts y RE:Vision FX. This format is supported by some applications as: Blackmagic Fusion, TheFoundry Nuke, Autodesk Toxic/Composite, Assimilate Scratch, Sony Vegas, Natron, DaVinci Resolve…