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+rav1e is the fastest and safest AV1 video encoder. It is designed to
+eventually cover all use cases, though in its current form it is most
+suitable for cases where aom (the reference encoder) is too slow.
+
+Features:
+
+* Intra, inter, and switch frames
+* 64x64 superblocks
+* 4x4 to 64x64 RDO-selected square and rectangular blocks
+* DC, H, V, Paeth, smooth, and all directional prediction modes
+* DCT, (FLIP-)ADST and identity transforms (up to 64x64, 16x16 and 32x32
+ respectively)
+* 8-, 10- and 12-bit depth color
+* 4:2:0, 4:2:2 and 4:4:4 chroma sampling
+* 11 speed settings (0-10, exhaustive to near real-time)
+* Constant quantizer and target bitrate (single- and multi-pass)
+ encoding modes
+* Still picture mode
+
+rust-opt and cargo-c are needed only at build time.