# BOMedia Video 1 The codec compresses image sequences by avoiding redundancies by reusing parts of previous frames. A frame is one block that is then subdivided further as needed. ## Literal-Block Stores the pixels' RGB values as is. ## Split-Block Delegates to two sub-blocks. The block is split orthorgonally on the longest axis. If needed, the left/top block is rounded down and the right/bottom rounded up. ## Reference-Block Indicates that parts of the last frame are reused. The data reused is at the position of this block in the last frame with the translation added. ## File format - magic bytes: `5e b1 c3 08` - resolution: _`u16, u16`_ - frame count: _`u64`_ - frames (repeated [frame count]-times): Frame (see below) ## Frame format - block kind: _`u8` (see tags below)_ - block: _one of the following_ - 0 **Split-Block** - sub-blocks: _`[block; 2]` (see above)_ - 1 **Literal-Block** - pixels: _`[[u8; 3]; (inferred)]`_ (stored line-by-line) - 2 **Reference-Block** - position_offset: _`[i8; 2]`_ - color_offset: _`[i16; 3]`_ ### Data Types - _`u`_: unsigned n-bit integer (little-endian) - _`i`_: signed n-bit integer using twos-complement (little-endian) - _`[; ]`_: Array of T with length N