.NET UWP MediaFrameReference 帧的大小（以字节为单位）是多少

Question

在微软示例项目CameraFrames中，private void Reader_FrameArrived()读取的帧大小是多少？

以下是示例项目中的代码：

private void Reader_FrameArrived(MediaFrameReader sender, MediaFrameArrivedEventArgs args)
{
    // TryAcquireLatestFrame will return the latest frame that has not yet been acquired.
    // This can return null if there is no such frame, or if the reader is not in the
    // "Started" state. The latter can occur if a FrameArrived event was in flight
    // when the reader was stopped.
    using (var frame = sender.TryAcquireLatestFrame())
    {
        _frameRenderer.ProcessFrame(frame);
    }
}

什么是“帧”大小（以字节为单位）？

Answer 1

试试Media​Frame​Reference.Buffer​Media​Frame.Buffer.Length。

using (var frame = sender.TryAcquireLatestFrame())
{
    var length = frame.Buffer​Media​Frame.Buffer.Length;
    _frameRenderer.ProcessFrame(frame);
}

我在我的笔记本电脑上测试，值为 1228800（视频帧为 640x480，每像素 4 个字节）。