Package: AV1R
Type: Package
Title: 'AV1' Video Encoding for Biological Microscopy Data
Version: 0.1.3
Authors@R: c(
        person("Yuri", "Baramykov",
        email = "lbsbmsu@mail.ru",
        role = c("aut", "cre"),
        comment = c(ORCID = "0009-0000-7627-4217"))
    )
Description: Converts legacy microscopy video formats (H.264/H.265,
        AVI/MJPEG, TIFF stacks) to the modern 'AV1' codec with minimal
        quality loss. Typical use cases include compressing large TIFF
        stacks from confocal microscopy and time-lapse experiments from
        hundreds of gigabytes to manageable sizes, re-encoding MP4
        files exported from 'CellProfiler', 'ImageJ'/'Fiji', and
        microscope software with approximately 2x better compression at
        the same visual quality, and converting legacy AVI (MJPEG) and
        H.265 recordings to a single patent-free format suited for
        long-term archival. Automatically selects the best available
        backend: GPU hardware acceleration via 'Vulkan'
        'VK_KHR_VIDEO_ENCODE_AV1' or 'VAAPI' (tested on AMD RDNA4;
        bundled headers, builds with any 'Vulkan' SDK >= 1.3.275), with
        automatic fallback to CPU encoding through 'FFmpeg' and
        'SVT-AV1'. User controls quality via a single CRF parameter;
        each backend adapts automatically (CPU and Vulkan use CRF
        directly, VAAPI targets 55 percent of input bitrate). TIFF
        stacks use near-lossless CRF 5 by default, with optional
        proportional scaling via tiff_scale (multiplier or bounding
        box, aspect ratio always preserved). Small frames are
        automatically scaled up to meet hardware encoder minimums.
        Audio tracks are preserved automatically. Provides a simple R
        API for batch conversion of entire experiment folders.
Depends: R (>= 4.1.0)
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
        libavcodec/libavformat, libvulkan-dev (optional, for GPU
        encoding on Linux), Vulkan SDK (optional, for GPU encoding on
        Windows)
Suggests: magick, testthat (>= 3.0.0)
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: 2026-07-04 17:30:44 UTC; root
Author: Yuri Baramykov [aut, cre] (ORCID:
    <https://orcid.org/0009-0000-7627-4217>)
Maintainer: Yuri Baramykov <lbsbmsu@mail.ru>