IJKPlayer相关指南

//打开h265硬解  

ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-hevc", 1);  

/*-------------CodecOption-------------*/  

//解码参数，画面更清晰  

[options setCodecOptionIntValue:IJK_AVDISCARD_DEFAULT forKey:@"skip_loop_filter"];  

[options setCodecOptionIntValue:IJK_AVDISCARD_DEFAULT forKey:@"skip_frame"];  

//以下是直播、点播参数设置不同  

if (直播) {  

   // Param for living  

   //最大缓存大小是3秒，可以依据自己的需求修改  

   [options setPlayerOptionIntValue:3000 forKey:@"max_cached_duration"];  

   //无限读  

   [options setPlayerOptionIntValue:1 forKey:@"infbuf"];  

   //关闭播放器缓冲  

   [options setPlayerOptionIntValue:0 forKey:@"packet-buffering"];  

} else {  

   // Param for playback  

   [options setPlayerOptionIntValue:0 forKey:@"max_cached_duration"];  

   [options setPlayerOptionIntValue:0 forKey:@"infbuf"];  

   [options setPlayerOptionIntValue:1 forKey:@"packet-buffering"];  

}  

/*-------------PlayerOption-------------*/  

//在视频帧处理不过来的时候丢弃一些帧达到同步的效果  

//跳帧开关，如果cpu解码能力不足，可以设置成5，否则会引起音视频不同步，也可以通过设置它来跳帧达到倍速播放  

[options setPlayerOptionIntValue:5/*0*/ forKey:@"framedrop"];  

//最大fps  

[options setPlayerOptionIntValue:30 forKey:@"max-fps"];  

//帧速率(fps) 可以改，确认非标准桢率会导致音画不同步，所以只能设定为15或者29.97  

[options setPlayerOptionIntValue:29.97 forKey:@"r"];  

//设置音量大小，256为标准音量。（要设置成两倍音量时则输入512，依此类推）  

[options setPlayerOptionIntValue:512 forKey:@"vol"];  

//指定最大宽度  

[options setPlayerOptionIntValue:960 forKey:@"videotoolbox-max-frame-width"];  

//开启/关闭 硬解码（硬件解码CPU消耗低。软解，更稳定）  

[options setPlayerOptionIntValue:0 forKey:@"videotoolbox"];  

//是否有声音  

[options setPlayerOptionIntValue:1  forKey:@"an"];  

//是否有视频  

[options setPlayerOptionIntValue:1  forKey:@"vn"];  

//每处理一个packet之后刷新io上下文  

[options setPlayerOptionIntValue:1 forKey:@"flush_packets"];  

//是否禁止图像显示(只输出音频)  

[options setPlayerOptionIntValue:1 forKey:@"nodisp"];  

//  

[options setPlayerOptionIntValue:0 forKey:@"start-on-prepared"];  

//  

[options setPlayerOptionIntValue:@"fcc-_es2" forKey:@"overlay-format"];  

//  

[options setPlayerOptionIntValue:3 forKey:@"video-pictq-size"];  

//  

[options setPlayerOptionIntValue:25 forKey:@"min-frames"];  

/*-------------FormatOption-------------*/  

//如果是rtsp协议，可以优先用tcp(默认是用udp)  

[options setFormatOptionValue:@"tcp" forKey:@"rtsp_transport"];  

//播放前的探测Size，默认是1M, 改小一点会出画面更快  

[options setFormatOptionIntValue:1024*16*0.5 forKey:@"probsize"];  

//播放前的探测时间  

[options setFormatOptionIntValue:50000 forKey:@"analyzeduration"];  

//自动转屏开关  

[options setFormatOptionIntValue:0 forKey:@"auto_convert"];  

//重连次数  

[options setFormatOptionIntValue:1 forKey:@"reconnect"];  

//超时时间，timeout参数只对http设置有效。若果你用rtmp设置timeout，ijkplayer内部会忽略timeout参数。rtmp的timeout参数含义和http的不一样。  

[options setFormatOptionIntValue:30 * 1000 * 1000 forKey:@"timeout"];  

//  

[options setFormatOptionIntValue:@"nobuffer" forKey:@"fflags"];  

//  

[options setFormatOptionIntValue:@"ijkplayer" forKey:@"user-agent"];  

//  

[options setFormatOptionIntValue:0 forKey:@"safe"];  

//  

[options setFormatOptionIntValue:0 forKey:@"http-detect-range-support"];  

//  

[options setFormatOptionIntValue:4628439040 forKey:@"ijkapplication"];  

//  

[options setFormatOptionIntValue:6176477408 forKey:@"ijkiomanager"];  

// for codec option 'skip_loop_filter' and 'skip_frame'  

typedef enum IJKAVDiscard {  

    /* We leave some space between them for extensions (drop some  

     * keyframes for intra-only or drop just some bidir frames). */  

    IJK_AVDISCARD_NONE    =-16, ///  

    IJK_AVDISCARD_DEFAULT =  0, ///  

    IJK_AVDISCARD_NONREF  =  8, ///  

    IJK_AVDISCARD_BIDIR   = 16, ///  

    IJK_AVDISCARD_NONKEY  = 32, ///  

    IJK_AVDISCARD_ALL     = 48, ///  

} IJKAVDiscard;