# The Experimental Video Codec

## File format

- magic bytes: `5e b1 c3 08`
- resolution: _`u16, u16`_
- frame count: _`u64`_
- frames (repeated [frame count]-times)
  - block type
  - block
    - **Literal-Block** (pixels saved)
      - pixels: _`[[u8; 3]]`_
    - **Split-Block** (delegated to 2 sub-blocks split on the longest axis)
      - sub-blocks: _`[block; 2]` (see above)_
    - **Reference-Block** (reuses previous frame in some way)
      - translation: _`i8, i8`_
    - **Advanced-Reference-Block** (reuses previous frame in some way)
      - translation: _`s8, s8`_ (translation encoded as _floats_)
      - transform: _`s8, s8, s8, s8`_ (2x2-matrix of _floats_ applied before
        sampling)
      - value_scale: _`i8`_ (represents multiplication of each color component
        with $1.05^n$)

### _`s8`_

8-bit scalar. When read as _`i8`_ represents a value of $\frac{x}{|x|} *
\sqrt{2}^{|{x}| - 4}$ for $x \neq 0$, otherwise 0.s

### Todo

- JPEG compress Literal-Blocks
- general compression (gzip oder so)