ShotDetector.Native.Gpl.osx-arm64 1.6.0

ShotDetector.Native.Gpl.<rid>

ShotDetector.Native's FFmpeg libraries with x264 added, so FrameReader's VideoWriter (the FrameReader package, a ShotDetector dependency) encodes H.264 in-process. One package per platform: win-x64, linux-x64, linux-arm64, linux-musl-x64, osx-arm64. Use it instead of ShotDetector.Native.<rid> (the same file names), not next to it.

dotnet add package ShotDetector.Native.Gpl.linux-x64

using var writer = new VideoWriter("out.mp4", new()
{
    Width = 1280, Height = 720, FrameRate = new(25, 1), FrameFormat = FrameFormat.Bgr24,
    PixelFormat = "yuv420p", Crf = 23, Preset = "medium",
    Gop = 50, KeyintMin = 50, KeyframeEvery = TimeSpan.FromSeconds(2), X264Params = "scenecut=0",
    Audio = new() { SampleRate = 48000, Channels = 2 },   // optional AAC track: writer.WriteAudio(samples)
});
foreach (var frame in frames)
    writer.Write(frame);   // Width x Height x 3 bytes, rows packed

The file is the one ffmpeg -c:v libx264 (with the same options) writes from the same frames with the same FFmpeg build, byte for byte when both set bitexact.

Licence: read this first

• GPL. x264 is under the GNU General Public License 2 or later, and building FFmpeg with it makes these libraries GPL-2.0-or-later (COPYING.GPL). In the Free Software Foundation's view, an application that loads them is a combined work: if you distribute your application with this package, you have to distribute it under the GPL, with its source. ShotDetector itself stays MIT, and ShotDetector.Native (without x264) LGPL. x264 LLC sells a commercial x264 licence if the GPL doesn't fit.
• Patents. H.264 is covered by Via LA's AVC patent pool. Whoever distributes an H.264 encoder is a licensee (encoders are royalty-free up to 100,000 units a year, but the licence has to be signed); free distribution isn't exempt. This package doesn't change that, whichever licence you use.

What's inside

Everything in ShotDetector.Native (FFmpeg 8.1.3's decoders and demuxers, the AAC, MP3 and PCM encoders, common muxers, the filters FrameReader uses; zlib, dav1d and LAME linked in), plus x264 from its stable branch, statically linked, as FFmpeg's libx264 encoder. configure.txt has the source URLs, the x264 commit and the exact configure line; the build script is tools/native/build-ffmpeg.sh <rid> <dir> gpl in the repository.