CorePNG
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- FOURCCs: PNG1
- Name: CorePNG
- Frame type: IP
- Website: CorePNG codec website
This lossless codec is based on the PNG image format. Each frame can be encoded as-is (I-frame), or can represent a delta from the previous frame (P-frame). In both cases the data is compressed in standard PNG format.
The codec was originally developed to compress subtitles.
The codec supports RGB[A] and YUV colorspaces: In RGB mode every frame is compressed as a PNG image; in YUV mode a frame is stored as 3 PNG images with order Y, U, V.