Ijkplayer低延时200msRTSP配置

I/IJKMEDIA: ===== options =====
I/IJKMEDIA: player-opts : overlay-format               = 842094169
I/IJKMEDIA: player-opts : opensles                     = 1
I/IJKMEDIA: player-opts : mediacodec                   = 1
I/IJKMEDIA: player-opts : mediacodec-hevc              = 1
I/IJKMEDIA: player-opts : start-on-prepared            = 1
I/IJKMEDIA: player-opts : packet-buffering             = 0
I/IJKMEDIA: player-opts : fast                         = 1
I/IJKMEDIA: player-opts : mediacodec-auto-rotate       = 0
I/IJKMEDIA: player-opts : mediacodec-handle-resolution-change = 0
I/IJKMEDIA: player-opts : min-frames                   = 2
I/IJKMEDIA: player-opts : max_cached_duration          = 3
I/IJKMEDIA: player-opts : framedrop                    = 5
I/IJKMEDIA: format-opts : ijkapplication               = -1671850416
I/IJKMEDIA: format-opts : ijkiomanager                 = -1471565696
I/IJKMEDIA: format-opts : rtsp_transport               = tcp
I/IJKMEDIA: format-opts : rtsp_flags                   = prefer_tcp
I/IJKMEDIA: format-opts : http-detect-range-support    = 0
D/IJKMEDIA: FFP_MSG_FLUSH:
I/IJKMEDIA: format-opts : buffer_size                  = 1024
I/IJKMEDIA: format-opts : flush_packets                = 1
I/IJKMEDIA: format-opts : max-fps                      = 0
I/IJKMEDIA: format-opts : fflags                       = nobuffer
I/IJKMEDIA: format-opts : infbuf                       = 1
I/IJKMEDIA: format-opts : analyzemaxduration           = 50
I/IJKMEDIA: format-opts : probesize                    = 500
I/IJKMEDIA: format-opts : max-buffer-size              = 0
I/IJKMEDIA: format-opts : dns_cache_clear              = 1
I/IJKMEDIA: codec-opts  : skip_loop_filter             = 48
I/IJKMEDIA: codec-opts  : skip_frame                   = 0
I/IJKMEDIA: ===================

Java代码

//安卓摄像头是默认Nv21，尝试Yv12。
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "overlay-format", IjkMediaPlayer.SDL_FCC_YV12);
//开启opensles.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "opensles", 0);
//开启硬解码mediacodec
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec", 0);
//开启h265硬解码.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-hevc", 0);
//rtsp支持
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "rtsp_transport", "tcp");
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "rtsp_flags", "prefer_tcp");
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "start-on-prepared", 1);
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "http-detect-range-support", 0);
// 设置是否开启环路过滤: 0开启，画面质量高，解码开销大，48关闭，画面质量差点，解码开销小
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_CODEC, "skip_loop_filter", 48);
//增加rtmp打开速度. 没有缓存会黑屏1s.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "buffer_size", 1024);//1316
// 是否开启预缓冲,直接禁用否则会有14s的卡顿缓冲时间.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "packet-buffering", 0L);
// 每处理一个packet之后刷新io上下文
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "flush_packets", 1L);
// 不额外优化（使能非规范兼容优化，默认值0 ）
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "fast", 1);
//最大帧率 20
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "max-fps", 0);
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "fflags", "nobuffer");
//                    "max-fps"
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "infbuf", 1);  // 无限读
// 设置播放前的最大探测时间 （100未测试是否是最佳值）
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "analyzemaxduration", 50L);
// 播放前的探测Size，默认是1M（1024）, 改小一点会出画面更快200
ijkMediaPlayer.setOption(1, "probesize", 500L);
// 自动旋屏
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-auto-rotate", 0);
// 处理分辨率变化
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-handle-resolution-change", 0);
// 最大缓冲大小,单位kb
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "max-buffer-size", 0);
//默认最小帧数2
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "min-frames", 2);
// 最大缓存时长
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER,  "max_cached_duration", 3); //300
// 跳过帧 ？？
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_CODEC, "skip_frame", 0);
//丢帧多丢点5试试.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "framedrop", 5);
//清空dns，因为多种协议播放会缓存协议导致播放h264后无法播放h265.
ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "dns_cache_clear", 1);