Foolcat aims to support any file in a QuickTime or MXF wrapper – files with an .MXF .MOV, .MP4, .MPEG, MTS, MKV .BRAW, .R3D, .ARX, .ARI extension (excluding encrypted files). That includes ProRes, DNxHD, DVCProHD, H.264, H.265 (HEVC), Apple Intermediate, Blackmagic RAW, RED R3D, and ARRIRAW.