{ "_id": "6a1df4681d7bb097a0a59ca6", "Package": "AV1R", "Type": "Package", "Title": "'AV1' Video Encoding for Biological Microscopy Data", "Version": "0.1.3", "Authors@R": "c(\nperson(\"Yuri\", \"Baramykov\",\nemail = \"lbsbmsu@mail.ru\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0009-0000-7627-4217\"))\n)", "Description": "Converts legacy microscopy video formats (H.264/H.265,\nAVI/MJPEG, TIFF stacks) to the modern 'AV1' codec with minimal\nquality loss. Typical use cases include compressing large TIFF\nstacks from confocal microscopy and time-lapse experiments from\nhundreds of gigabytes to manageable sizes, re-encoding MP4\nfiles exported from 'CellProfiler', 'ImageJ'/'Fiji', and\nmicroscope software with approximately 2x better compression at\nthe same visual quality, and converting legacy AVI (MJPEG) and\nH.265 recordings to a single patent-free format suited for\nlong-term archival. Automatically selects the best available\nbackend: GPU hardware acceleration via 'Vulkan'\n'VK_KHR_VIDEO_ENCODE_AV1' or 'VAAPI' (tested on AMD RDNA4;\nbundled headers, builds with any 'Vulkan' SDK >= 1.3.275), with\nautomatic fallback to CPU encoding through 'FFmpeg' and\n'SVT-AV1'. User controls quality via a single CRF parameter;\neach backend adapts automatically (CPU and Vulkan use CRF\ndirectly, VAAPI targets 55 percent of input bitrate). TIFF\nstacks use near-lossless CRF 5 by default, with optional\nproportional scaling via tiff_scale (multiplier or bounding\nbox, aspect ratio always preserved). Small frames are\nautomatically scaled up to meet hardware encoder minimums.\nAudio tracks are preserved automatically. Provides a simple R\nAPI for batch conversion of entire experiment folders.", "License": "MIT + file LICENSE", "URL": "https://github.com/Zabis13/AV1R", "BugReports": "https://github.com/Zabis13/AV1R/issues", "Encoding": "UTF-8", "SystemRequirements": "C++17, GNU make, FFmpeg (>= 4.4) with\nlibavcodec/libavformat, libvulkan-dev (optional, for GPU\nencoding on Linux), Vulkan SDK (optional, for GPU encoding on\nWindows)", "RoxygenNote": "7.3.3", "Config/testthat/edition": "3", "Config/pak/sysreqs": "make", "Repository": "https://zabis13.r-universe.dev", "Date/Publication": "2026-06-01 17:31:45 UTC", "RemoteUrl": "https://github.com/zabis13/av1r", "RemoteRef": "HEAD", "RemoteSha": "4f342c14930c28e33c02757adfb1e00a180f1097", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-06-01 21:00:35 UTC", "User": "root" }, "Author": "Yuri Baramykov [aut, cre] (ORCID:\n)", "Maintainer": "Yuri Baramykov ", "MD5sum": "c9aab8b1d7c26516753c8c10e665051e", "_user": "zabis13", "_type": "src", "_file": 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