Hello, The small company I work at uses ebur128 filter.
I’m offering a bounty to improve the filter’s performance on x86 machines. I’m offering 800 EUR per 10% gain from current baseline, up to 50%/4000 EUR. I’m aware of 2 recent, promising initiatives to improve performance: - our own incomplete attempt using SIMD instructions (-17%): https://ffmpeg.org/pipermail/ffmpeg-devel/2025-April/342383.html - Paul Mahol’s recent work in his fork (-20-25%) Notes: - Solution should of course remain EBU R128 compliant (see EBU Loudness Test Set [1], EBU 3341 [2] and EBU 3342 [3] specs) - Solution can use FMA, AVX, AVX2 but not AVX512. - Evaluation should be done w/ true peak detection disabled (e.g. "ffmpeg -i ~/test.wav -af ebur128=peak=none:framelog=quiet -f null -“) - I can offer a down payment at start of work of 800 EUR as a gesture of good will. Rest of payment on patch merge into ffmpeg + invoice I tried doing this myself but I lack the skills and proper time to learn them on the job. Always happy to sponsor some OSS work though! Best, Guillaume [1]: https://tech.ebu.ch/publications/ebu_loudness_test_set [2]: https://tech.ebu.ch/files/live/sites/tech/files/shared/tech/tech3341.pdf [3]: https://tech.ebu.ch/files/live/sites/tech/files/shared/tech/tech3342.pdf _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
