MAGIX Video
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- Extension: .mxv
MAGIX Video is a RIFF-inspired container for intermediate video (motion JPEG) extended to 64-bit support with both chunk types and sizes being 64-bit. Chunk names have a form of "MXxxxx64". Unlike RIFF there is no padding chunk sizes to 16-bit.
File starts with MXRIFF64 MXJVID64 list followed by stream header either in MXJVHD64 or MXJVH264 chunk, some other chunks and MXRIFF64 MXJVID64 list with frame chunks (MXJVVF64). At the end there may be MXJVFT64 index chunk (just 64-bit offsets to frames).