Unity3D開發之VideoPlayer

    最近老徒弟要畢業了，然後畢設裏unity不能播放視頻聲音。當時我自己測試的時候也是不能正常播放聲音。翻了好久官方API文檔，還是很迷惑。最後Google了下，找到了一個外國友人提供的解決方案。代碼如下：

一.播放指定視頻文件

public class Test : MonoBehaviour {

    //Raw Image to Show Video Images [Assign from the Editor]
    public RawImage image;
    //Video To Play [Assign from the Editor]
    public VideoClip videoToPlay;

    private VideoPlayer videoPlayer;
    private VideoSource videoSource;

    //Audio
    private AudioSource audioSource;

    // Use this for initialization
    void Start()
    {
        //Application.runInBackground = true;
        StartCoroutine(playVideo());
    }

    IEnumerator playVideo()
    {
        //Add VideoPlayer to the GameObject
        videoPlayer = gameObject.AddComponent<VideoPlayer>();

        //Add AudioSource
        audioSource = gameObject.AddComponent<AudioSource>();

        //Disable Play on Awake for both Video and Audio
        videoPlayer.playOnAwake = false;
        audioSource.playOnAwake = false;

        //We want to play from video clip not from url
        videoPlayer.source = VideoSource.VideoClip;

        //Set video To Play then prepare Audio to prevent Buffering
        videoPlayer.clip = videoToPlay;
        
        //Debug.Log("Done Preparing Video");

        //Set Audio Output to AudioSource
        videoPlayer.audioOutputMode = VideoAudioOutputMode.AudioSource ;

        //Assign the Audio from Video to AudioSource to be played
        videoPlayer.EnableAudioTrack(0, true);
        videoPlayer.SetTargetAudioSource(0, audioSource);


        //Google到的解決方案
        //這裏一定要讓以上工作完成後才能開始準備videoPlayer  並且賦值視頻輸出Texture
        videoPlayer.Prepare();

        //Wait until video is prepared
        while (!videoPlayer.isPrepared)
        {
            Debug.Log("Preparing Video");
            yield return null;
        }

        //Set Raw Image to Show Video Images
        image.texture = videoPlayer.texture;
        //Play Video
        videoPlayer.Play();

        //Play Sound
        audioSource.Play();

        //Debug.Log("Playing Video");
        while (videoPlayer.isPlaying)
        {
            Debug.LogWarning("Video Time: " + Mathf.FloorToInt((float)videoPlayer.time));
            yield return null;
        }

        Debug.Log("Done Playing Video");
    }
}

   查了下管網API，這個Prepare（）很重要。只有在準備完成後，視頻的每一幀纔會被立即正確的播放。並且，我們要在播放器屬性設置完之後在調用，不然語音不能被正確播放。

二.從網站地址播放視頻

    就是將上面代碼的

//We want to play from video clip not from url
        videoPlayer.source = VideoSource.VideoClip;

        //Set video To Play then prepare Audio to prevent Buffering
        videoPlayer.clip = videoToPlay;

更改爲：

videoPlayer.source = VideoSource.Url;
        videoPlayer.url = "http://www.JayW.handsomeboy.mp4";

三.播放本地文件視頻

string url = "file://" + Application.streamingAssetsPath + "/" + "VideoName.mp4";

if !UNITY_EDITOR && UNITY_ANDROID
    url = Application.streamingAssetsPath + "/" + "VideoName.mp4";
#endif

//We want to play from url
videoPlayer.source = VideoSource.Url;
videoPlayer.url = url;

四.視頻播放支持的格式

所有支持的視頻格式：

• ogv
• vp8
• webm
• mov
• dv
• mp4
• m4v
• mpg
• mpeg

部分Windows上支持的視頻格式：

• avi
• asf
• wmf

Unity的VideoPlayer還支持其他輸出模式，

可根據自身需求參考官方API進行選擇。以上就是VideoPlayer播放視頻的大體內容。希望對你有幫助。