最近，好多开发者在unity3d平台面临一个问题，难于找到一个真正靠谱的低延迟rtmp播放器或rtsp播放器。

不少开发者联系我们，希望大牛直播SDK能出官方版的unity3d直播播放器SDK，以下是Android端的SDK接口：

    /// <summary>/// Init/// </summary>public int NT_U3D_Init(){return DANIULIVE_RETURN_OK;}/// <summary>/// 开始/// 返回播放句柄/// </summary>public long NT_U3D_Open(){if ( 0 != player_obj_.Call<int>("Init", java_obj_cur_activity_) ){return 0;}return player_obj_.Call<long>("Open");}/// <summary>/// Register Game Object,用于消息传递/// </summary>public int NT_U3D_Set_Game_Object(long handle, string gameObjectName){return player_obj_.Call<int>("SetGameObject", handle, gameObjectName);}/// <summary>/// 设置解码方式 false 软件解码 true 硬件解码 默认为false/// </summary>/// <param name="isHwDecoder"></param>public int NT_U3D_SetVideoDecoderMode(long handle, int isHwDecoder){return player_obj_.Call<int>("SetPlayerVideoHWDecoder", handle, isHwDecoder);}/// <summary>/// 设置音频输出模式: if 0: 自动选择; if with 1: audiotrack模式/// </summary>/// <param name="use_audiotrack"></param>public int NT_U3D_SetAudioOutputType(long handle, int use_audiotrack){return player_obj_.Call<int>("SetAudioOutputType", handle, use_audiotrack);}/// <summary>/// 设置播放端缓存大小, 默认200毫秒/// </summary>/// <param name="buffer"></param>public int NT_U3D_SetBuffer(long handle, int buffer){return player_obj_.Call<int>("SetBuffer", handle, buffer);}/// <summary>/// 接口可实时调用：设置是否实时静音，1：静音; 0: 取消静音/// </summary>/// <param name="is_mute"></param>public int NT_U3D_SetMute(long handle, int is_mute){return player_obj_.Call<int>("SetMute", handle, is_mute);}/// <summary>/// 设置RTSP TCP模式, 1: TCP; 0: UDP/// </summary>/// <param name="is_using_tcp"></param>public int NT_U3D_SetRTSPTcpMode(long handle, int is_using_tcp){return player_obj_.Call<int>("SetRTSPTcpMode", handle, is_using_tcp);}/// <summary>/// 设置超低延迟模式 false不开启 true开启 默认false/// </summary>/// <param name="mode"></param>public int NT_U3D_SetPlayerLowLatencyMode(long handle, int mode){return player_obj_.Call<int>("SetPlayerLowLatencyMode", handle, mode);}/// <summary>/// 设置是否回调下载速度/// is_report: if 1: 上报下载速度, 0: 不上报./// report_interval: 上报间隔，以秒为单位，>0./// </summary>/// <param name="is_report"></param>/// <param name="report_interval"></param>public int NT_U3D_SetReportDownloadSpeed(long handle, int is_report, int report_interval){return player_obj_.Call<int>("SetReportDownloadSpeed", handle, is_report, report_interval);}/// <summary>/// 设置是否需要在播放或录像过程中快照/// </summary>/// <param name="is_save_image"></param>public int NT_U3D_SetSaveImageFlag(long handle, int is_save_image){return player_obj_.Call<int>("SetSaveImageFlag", handle, is_save_image);}/// <summary>/// 播放或录像过程中快照/// </summary>/// <param name="imageName"></param>public int NT_U3D_SaveCurImage(long handle, string imageName){return player_obj_.Call<int>("SaveCurImage", handle, imageName);}/// <summary>/// 播放或录像过程中，快速切换url/// </summary>/// <param name="uri"></param>public int NT_U3D_SwitchPlaybackUrl(long handle, string uri){return player_obj_.Call<int>("SwitchPlaybackUrl", handle, uri);}/// <summary>/// 创建录像存储路径/// </summary>/// <param name="path"></param>public int NT_U3D_CreateFileDirectory(string path){return player_obj_.Call<int>("CreateFileDirectory", path);}/// <summary>/// 设置录像存储路径/// </summary>/// <param name="path"></param>public int NT_U3D_SetRecorderDirectory(long handle, string path){return player_obj_.Call<int>("SetRecorderDirectory", handle, path);}/// <summary>/// 设置单个录像文件大小/// </summary>/// <param name="size"></param>public int NT_U3D_SetRecorderFileMaxSize(long handle, int size){return player_obj_.Call<int>("SetRecorderFileMaxSize", handle, size);}/// <summary>/// 设置播放路径/// </summary>public int NT_U3D_SetUrl(long handle, string url){return player_obj_.Call<int>("SetUrl", handle, url);}/// <summary>/// 开始播放/// </summary>public int NT_U3D_StartPlay(long handle){return player_obj_.Call<int>("StartPlay", handle);}/// <summary>/// 获取YUV数据/// </summary>public AndroidJavaObject NT_U3D_GetVideoFrame(long handle){return player_obj_.Call<AndroidJavaObject>("GetVideoFrame", handle);}/// <summary>/// 停止播放/// </summary>public int NT_U3D_StopPlay(long handle){return player_obj_.Call<int>("StopPlay", handle);}/// <summary>/// 开始录像/// </summary>public int NT_U3D_StartRecorder(long handle){return player_obj_.Call<int>("StartRecorder", handle);}/// <summary>/// 停止录像/// </summary>public int NT_U3D_StopRecorder(long handle){return player_obj_.Call<int>("StopRecorder", handle);}/// <summary>/// 关闭播放/// </summary>public int NT_U3D_Close(long handle){return player_obj_.Call<int>("Close", handle);}/// <summary>/// UnInit Player/// </summary>public int NT_U3D_UnInit(){return DANIULIVE_RETURN_OK;}

经测试，Android/iOS端效果如下，播放端延迟低于1秒，也可能是unity3d平台下最快最稳定的rtmp播放器/rtsp播放器：

视频效果图：

点击播放视频

Unity3D-Android播放端APK下载

android/iOS播放器SDK(V2)Unity3D调用说明

更多资料，可以访问 https://github.com/daniulive/SmarterStreaming