Crate zenrav1e 

zenrav1e is an AV1 encoder optimized for still and animated AVIF images.

This is Imazen’s fork of rav1e, focused on compression efficiency for photographic content. Key improvements over upstream:

• Quantization matrices — frequency-dependent quantization weights (~10% BD-rate gain)
• Filter intra prediction — 5 recursive filter modes for smooth gradients
• Lossless mode — mathematically lossless encoding via quantizer: 0
• Still picture mode — single-frame encoding without video overhead

Also supports full video encoding (intra, inter, switch frames) inherited from upstream rav1e.

Usage

Encoding is done through the Context struct. Examples on Context::receive_packet show how to create a Context, send frames into it and receive packets of encoded data.

Modules

color

Color model information

config

Encoder configuration and settings

data

Basic data structures

prelude

Commonly used types and traits.

version

Version information

Structs

Config

Contains the encoder configuration.

Context

The encoder context.

EncoderConfig

Encoder settings which impact the produced bitstream.

Frame

Represents a raw video frame

Packet

Represents a packet.

Enums

EncoderStatus

Status that can be returned by Context functions.

InvalidConfig

Enumeration of possible invalid configuration errors.

PixelType

Types that can be used as pixel types.

Traits

CastFromPrimitive

Trait for casting between primitive types.

Pixel

A type that can be used as a pixel type.