FFmpeg Lands Latest AVX-512 Optimization: 1.372x Faster In Pixel Format Conversion - Phoronix
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FFmpeg Lands Latest AVX-512 Optimization: 1.372x Faster In Pixel Format Conversion
Written by Michael Larabel in Multimedia on 19 July 2026 at 07:00 AM EDT. 6 Comments
The latest hand-tuned code in the FFmpeg multimedia library for allowing better performance on today's modern Intel/AMD AVX-512-capable processors is showing 1.372x faster performance for RGB24 to RGBA pixel format conversions.
Prominent FFmpeg developer Niklas Haas has extended the FFmpeg libswscale to make use of AVX-512's Vector Permute Byte "VPERMB" instructions to help with more efficient video scaling and pixel format conversion. With VPERMB the code now benefits from full cross-lane byte permutation to provide better performance for non-lane-aligned scenarios.
The exciting takeaway for end-users of FFmpeg is that Haas found RGBA24 1920x1080 to RGBA 1920x1080 conversion was 1.372x faster with this reworked code on AVX-512 processors. This is great news for AMD Zen 4 and newer CPUs or Intel Xeon and other select Intel CPUs supporting AVX-512.
More details for those interested in this commit.
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