MediaEncoder

描述

将图像和音频样本编码为音频或电影文件。

构造此类的实例将创建一个编码器，该编码器将创建一个带有指定音轨的音频、视频或音频/视频文件。

交替调用 AddFrame() 和 AddSamples() 方法，以使每个音轨的帧和样本保持一致。

将所有想要添加的帧和样本添加到文件后，调用 Dispose() 以正确结束每个音轨并关闭文件。

using UnityEditor.Media;
using UnityEngine;
using Unity.Collections;
using System.IO;

public class Recorder
{
    static public void RecordMovie()
    {
        var videoAttr = new VideoTrackAttributes
        {
            frameRate = new MediaRational(50),
            width = 320,
            height = 200,
            includeAlpha = false
        };

        var audioAttr = new AudioTrackAttributes
        {
            sampleRate = new MediaRational(48000),
            channelCount = 2,
            language = "fr"
        };

        int sampleFramesPerVideoFrame = audioAttr.channelCount *
            audioAttr.sampleRate.numerator / videoAttr.frameRate.numerator;

        var encodedFilePath = Path.Combine(Path.GetTempPath(), "my_movie.mp4");

        Texture2D tex = new Texture2D((int)videoAttr.width, (int)videoAttr.height, TextureFormat.RGBA32, false);

        using (var encoder = new MediaEncoder(encodedFilePath, videoAttr, audioAttr))
        using (var audioBuffer = new NativeArray<float>(sampleFramesPerVideoFrame, Allocator.Temp))
        {
            for (int i = 0; i < 100; ++i)
            {
                // Fill 'tex' with the video content to be encoded into the file for this frame.
                // ...
                encoder.AddFrame(tex);

                // Fill 'audioBuffer' with the audio content to be encoded into the file for this frame.
                // ...
                encoder.AddSamples(audioBuffer);
            }
        }
    }
}

构造函数

公共方法