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- Extension: ivf
IVF is a simple file format that transports raw VP8 data.
Multi-byte numbers of little-endian. An IVF file begins with a 32-byte header:
bytes 0-3 signature: 'DKIF' bytes 4-5 version (should be 0) bytes 6-7 unknown bytes 8-11 codec FourCC (e.g., 'VP80') bytes 12-13 width in pixels bytes 14-15 height in pixels bytes 16-23 unknown bytes 24-27 number of frames in file bytes 28-31 unknown
The header is followed by a series of frames. Each frame consists of a 12-byte header followed by data:
bytes 0-3 size of frame in bytes (not including the 12-byte header) bytes 4-7 frame number bytes 8-11 unknown bytes 12.. frame data