#rav1d
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joshaas.bsky.social
We created a safer AV1 decoder, rav1d, by forking the dav1d decoder and rewriting the C code in Rust. It works great except our Rust is 5% slower than the C. We're not sure why so we're offering a $20k bounty to figure it out and make the Rust code faster. www.memorysafety.org/blog/rav1d-p...
$20,000 rav1d AV1 Decoder Performance Bounty
In March of 2023 we announced that we were starting work on a safer high performance AV1 decoder called rav1d, written in Rust. We partnered with Immunant to do the engineering work. By September of 2...
www.memorysafety.org
May 14, 2025 at 8:02 AM
there.is.no.aarch64.mov
okay i was 50/50 on actually trying to turn PoC patches into something to PR against rav1d but finding out that the ffmpeg twitter account has opinions on it and has opinions about there being rust code is deeply motivating
there.is.no.aarch64.mov iximeow @there.is.no.aarch64.mov · May 17
if you say your program is highly optimized but you have hot paths that include recursive calls with 16 arguments i should be able to fine you twelve dollars
May 19, 2025 at 5:02 AM
eliza.vg
lol stfu
Nitter screenshot @FFmpeg - Rust is so good you can get paid $20k to make it as fast as C: https://www.memorysafety.org/blog/rav1d-perf-bounty/
May 15, 2025 at 4:25 AM
steveklabnik.com
Porting C to #rustlang for a Fast and Safe AV1 Media Decoder www.memorysafety.org/blog/porting...
Porting C to Rust for a Fast and Safe AV1 Media Decoder
AV1 is an increasingly important video format and it needs a memory safe, high performance decoder. We worked with the team at Immunant to develop rav1d, a Rust-based port of dav1d, a C decoder. This ...
www.memorysafety.org
September 9, 2024 at 8:46 PM
permutans.bsky.social
Nature is healing 😌🕊️
Peace in ffmpeg rav1d land
May 15, 2025 at 11:31 PM
curiouscoding.nl
www.memorysafety.org/blog/rav1d-p...

Nice blog on optimization stuff
Optimizing rav1d, an AV1 Decoder in Rust
AV1 is an increasingly important video format and it needs a memory safe, high performance decoder. We worked with the team at Immunant to develop rav1d. Performance is critical in this context, so we...
www.memorysafety.org
May 14, 2025 at 8:43 AM
kdarty.hachyderm.io.ap.brid.gy
Rust developers offered $20k for rav1d to reach C performance (By Ryan Daws)

#rustlang #RustLanguage #rust #coding #programming #trendingtech #rav1d #challenge

https://www.developer-tech.com/news/rust-developers-offered-20k-rav1d-to-reach-c-performance/
Ferris, the unofficial mascot of the Rust programming language
May 20, 2025 at 9:02 PM
ycombinatorbot.bsky.social
Making the rav1d Video Decoder 1% Faster

view on hacker news
Making the rav1d Video Decoder 1% Faster
Posted by todsacerdoti with a score of 82
ohadravid.github.io
May 22, 2025 at 2:00 PM
victor-yarema.bsky.social
ohadravid.github.io/posts/2025-1...
Why is calling my asm function from Rust slower than calling it from C?
This is a follow-up to making the rav1d video decoder 1% faster, where we compared profiler snapshots of rav1d (the Rust implementation) and dav1d (the C …
ohadravid.github.io
December 28, 2025 at 10:39 AM
hn100.atproto.rocks
$20K Bounty Offered for Optimizing Rust Code in Rav1d AV1 Decoder
https://www.memorysafety.org/blog/rav1d-perf-bounty/

https://news.ycombinator.com/item?id=43982238
$20,000 rav1d AV1 Decoder Performance Bounty
In March of 2023 we announced that we were starting work on a safer high performance AV1 decoder called rav1d, written in Rust. We partnered with Immunant to do the engineering work. By September of 2024 rav1d was basically complete and we learned a lot during the process. Today rav1d works well—it passes all the same tests as the dav1d decoder it is based on, which is written in C. It’s possible to build and run Chromium with it.
www.memorysafety.org
May 14, 2025 at 11:30 PM
hackernewsrobot.bsky.social
$20K Bounty Offered for Optimizing Rust Code in Rav1d AV1 Decoder
$20,000 rav1d AV1 Decoder Performance Bounty
In March of 2023 we announced that we were starting work on a safer high performance AV1 decoder called rav1d, written in Rust. We partnered with Immunant to do the engineering work. By September of 2024...
www.memorysafety.org
May 14, 2025 at 1:32 PM
gadgetry.bsky.social
Do you think Rust developers can close or eliminate the performance gap with the C-based cousin of the rav1d AV1 video decoder? #rust #coding #programming #opensource #developers #tech #news #technology
Rust developers offered $20k for rav1d to reach C performance
The folks behind Rust-based AV1 video decoder rav1d are looking for developers to get it running as fast as its C-based cousin, dav1d.
www.developer-tech.com
May 19, 2025 at 4:18 PM
noritada.bsky.social
AV1 DecoderのRust実装がC実装よりも5%遅い問題の改善に2万米ドルという話、Pythonののんびりした世界に安住していると「C実装より5倍遅いではなく速度差5%なら…」などと思ってしまう。笑
欧米圏、ニュージーランド、オーストラリアの居住が参加条件に含まれているのね。

$20,000 rav1d AV1 Decoder Performance Bounty - Prossimo
www.memorysafety.org/blog/rav1d-p...
$20,000 rav1d AV1 Decoder Performance Bounty
In March of 2023 we announced that we were starting work on a safer high performance AV1 decoder called rav1d, written in Rust. We partnered with Immunant to do the engineering work. By September of 2...
www.memorysafety.org
May 16, 2025 at 12:47 PM
rustaceans.bsky.social
Deno Doing Deno Things

Today’s Issue: Making the rav1d Decoder 1% Faster, Writing Into Uninitialized Buffers in Rust, and Measuring CO2 With I2C & Embedded Rust.

#rust #rustlang #programming

open.substack.com/pub/weeklyru...
Deno Doing Deno Things
Today’s Issue: Making the rav1d Decoder 1% Faster, Writing Into Uninitialized Buffers in Rust, and Measuring CO2 With I2C & Embedded Rust.
open.substack.com
May 26, 2025 at 7:34 AM
alper.nl
A very informative write-up of how you would squeeze out the last bits of performance out of a Rust port. Not sure if I’d ever apply this but I’m happy enough that I can mostly follow along.
Making the rav1d Video Decoder 1% Faster
*on macOS with an M3 chip *slightly more than 1%, on a specific benchmark, without any new unsafe code A while ago, memorysafety.org announced a contest for …
ohadravid.github.io
June 7, 2025 at 3:39 AM
ducktapeprogrammer.bsky.social
ohadravid.github.io/posts/2025-0...

- MaybeUnit to avoid needless initialization
- Using zerocopy::AsBytes to compare a struct with multiple fields instead of the default PartialEq
Making the rav1d Video Decoder 1% Faster
*on macOS with an M3 chip *slightly more than 1%, on a specific benchmark, without any new unsafe code A while ago, memorysafety.org announced a contest for …
ohadravid.github.io
May 22, 2025 at 1:56 PM
hackerbriefs.bsky.social
"Improving performance of rav1d video decoder"

Optimizing video decoding is exciting. Improving the AV1 codec could help replace older, paid codecs. Free tech is better for everyone.
Article | Discussion
May 22, 2025 at 6:00 PM
nafnlaus.bsky.social
It remains true. Browse any high performance software's codebase. FFmpeg. dav1d/rav1d. LuaJIT. V8. OpenSSL. ring (Rust). OpenBLAS. Pretty much anything that needs to be max performance on CPU and has had enough development work ends up with assembly in its inner routines.
June 14, 2026 at 12:55 AM
rustaceans.bsky.social
This challenge is part of our weekly newsletter 👇
open.substack.com/pub/weeklyru...
Deno Doing Deno Things
Today’s Issue: Making the rav1d Decoder 1% Faster, Writing Into Uninitialized Buffers in Rust, and Measuring CO2 With I2C & Embedded Rust.
open.substack.com
May 28, 2025 at 9:59 AM
handle.invalid
📰 $20K Bounty Offered for Optimizing Rust Code in Rav1d AV1 Decoder

💬 Performance vs. safety in Rust is a hot topic! A few percentage points cost for safety saddens the optimizers. ⚖️

https://news.ycombinator.com/item?id=43982238
May 14, 2025 at 11:30 AM
ducktapeprogrammer.bsky.social
In that optimization article a few days ago there was a paragraph about panic increasing fn sizes and causing regressions by preventing inlining. That’s what I’m basing it off of.

But if this is entirely standalone, then yeah, it shouldn’t matter I guess

www.memorysafety.org/blog/rav1d-p...
May 16, 2025 at 12:39 PM
slashdot.org

'Rust is So Good You Can Get Paid $20K to Make It as Fast as C'

https://developers.slashdot.org/story/25/05/18/0257255/rust-is-so-good-you-can-get-paid-20k-to-make-it-as-fast-as-c?utm_source=rss1.0mainlinkanon&utm_medium=feed
'Rust is So Good You Can Get Paid $20K to Make It as Fast as C'
The Prossimo project (funded by the nonprofit Internet Security Research Group) seeks to "move the Internet's security-sensitive software infrastructure to memory safe code." Two years ago the Prossimo project made an announcement: they'd begun work on rav1d, a safer high performance AV1 decoder...
developers.slashdot.org
May 18, 2025 at 5:42 PM
freelancebarme.bsky.social
Developers sought to optimize Rust-based AV1 video decoder rav1d to match C-based dav1d speed. With $20k incentive since March 2023, aiming at high-performance with Rust's safety features. Partnered with Immunant for enhancement. #AV1 #Rust https://www.developer-tech.com/news/rust-developers-offere…
Rust developers offered $20k for rav1d to reach C performance
The folks behind Rust-based AV1 video decoder rav1d are looking for developers to get it running as fast as its C-based cousin, dav1d.
www.developer-tech.com
May 22, 2025 at 7:03 AM
lobste.rs.web.brid.gy
Making the rav1d Video Decoder 1% Faster
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ohadravid.github.io
May 22, 2025 at 7:47 PM
lobste.rs.web.brid.gy
$20K Bounty Offered for Optimizing Rust Code in rav1d AV1 Decoder
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www.memorysafety.org
May 14, 2025 at 10:12 AM