Luca Barbato

rav1e is an opensource Av1 encoder.

We'll see what makes it fairly unique beside the choice of using Rust as main development language.

We'll see what we did in the past releases, what design choices we took and what we plan to do in the next two releases.

By February we will have the release 0.2.0 and the release 0.3.0 out. I'll present what's coming in the release 0.4.0 and 0.5.0.

This will include some performance evaluation and describing some of the features are currently unique in rav1e.

rav1e is a fast AV1 encoder written in rust (and plenty of assembly), released monthly.

Since the 0.1.0 release we try to make sure we provide an adequate speed or quality boost compared to the previous.

This talk is about what tools are available in the rust ecosystem and what are the practices that worked best for us.

The presentation will touch the following topics: - Exploring a codebase and profiling it effectively, both for cpu usage and memory usage. - Which are the optimization strategies that worked for us better (critical path analysis vs peak consumer) - Benchmarking and tracing

I'll provide examples on what tools worked well or not so well and what currently I consider the best and most promising tools for each tasks.

Multimedia development is mainly done in C+assembly since speed is important and such combination of languages traditionally gives the best control over the hardware.

Rust is considered a mature system language that provides strong warranties about memory access (and more) without sacrificing runtime speed.

Multimedia libraries are plagued by classes of bugs that Rust actively prevents at compile time, thus this talk is about leveraging Rust to have a multimedia framework that is nice to use and at the same time more trustworthy.

Target audience is people with some Rust knowledge and some experience with multimedia libraries and concepts.