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Making the rav1d Video Decoder 1% Faster

Tea and Bits · published 22 May 2025

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Links from this post

Link
Host
$20,000 rav1d AV1 Decoder Performance Bounty
memorysafety.org
https://github.com/memorysafety/rav1d/pull/1397
github.com
https://github.com/memorysafety/rav1d/pull/1400
github.com
https://github.com/memorysafety/rav1d
github.com
https://code.videolan.org/videolan/dav1d
code.videolan.org
https://github.com/immunant/c2rust
github.com
Optimizing rav1d, an AV1 Decoder in Rust
memorysafety.org
https://github.com/memorysafety/rav1d/blob/main/.github/workflows/build-and-benchmark-x86.yml
github.com
https://github.com/mstange/samply
github.com
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Fdav1d_profile.json.gz/calltree/?assemblyView=2~11c50~174~dav1d_filter_sbrow_cdef_8bpc&globalTrackOrder=0&search=dav1d_cdef_brow_8bpc&thread=0&v=10
profiler.firefox.com
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Frav1d_profile_baseline.json.gz/calltree/?globalTrackOrder=0&search=rav1d_cdef_brow&thread=0&v=10
profiler.firefox.com
https://doc.rust-lang.org/std/mem/union.MaybeUninit.html
doc.rust-lang.org
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Frav1d_profile_after.json.gz/calltree/?globalTrackOrder=0&search=rav1d_cdef_brow&thread=0&v=10
profiler.firefox.com
https://www.ralfj.de/blog/2021/11/18/ub-good-idea.html
ralfj.de
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Fdav1d_profile.json.gz/calltree/?globalTrackOrder=0&invertCallstack&thread=0&v=10
profiler.firefox.com
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Frav1d_profile_baseline.json.gz/calltree/?globalTrackOrder=0&invertCallstack&thread=0&v=10
profiler.firefox.com
https://profiler.firefox.com/from-url/https%3A%2F%2Fohadravid.github.io%2F2025-05-rav1d-faster%2Frav1d_profile_with_debug.json.gz/calltree/?globalTrackOrder=0&invertCallstack&thread=0&v=10
profiler.firefox.com
https://godbolt.org/z/r9MfTeY8b
godbolt.org
https://docs.rs/zerocopy/latest/zerocopy/trait.IntoBytes.html
docs.rs
https://github.com/rust-lang/rust/issues/140167
github.com
https://www.reddit.com/r/rust/comments/1ksnljw/making_the_rav1d_video_decoder_1_faster/
reddit.com
https://lobste.rs/s/j3mzif/making_rav1d_video_decoder_1_faster
lobste.rs
https://news.ycombinator.com/item?id=44061160
news.ycombinator.com
Elsewhere on ohadravid.github.io (2)