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https://github.com/ZLMediaKit/ZLMediaKit.git
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rtsp and rtp h264 lowlatency mode config
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@ -264,6 +264,8 @@ audioMtuSize=600
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videoMtuSize=1400
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#rtp包最大长度限制,单位KB,主要用于识别TCP上下文破坏时,获取到错误的rtp
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rtpMaxSize=10
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# rtp 打包时,低延迟开关,默认关闭(为0),h264存在一帧多个slice(NAL)的情况,在这种情况下,如果开启可能会导致画面花屏
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lowLatency=0
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[rtp_proxy]
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#导出调试数据(包括rtp/ps/h264)至该目录,置空则关闭数据导出
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@ -352,7 +354,8 @@ keepAliveSecond=15
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port=554
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#rtsps服务器监听地址
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sslport=0
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#rtsp 转发是否使用低延迟模式,当开启时,不会缓存rtp包,来提高并发,可以降低一帧的延迟
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lowLatency=0
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[shell]
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#调试telnet服务器接受最大bufffer大小
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maxReqSize=1024
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@ -398,6 +398,12 @@ private:
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//但是却对性能提升很大,这样做还是比较划算的
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GET_CONFIG(int, mergeWriteMS, General::kMergeWriteMS);
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GET_CONFIG(int, rtspLowLatency, Rtsp::KLowLatency);
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if(std::is_same<packet, RtpPacket>::value && rtspLowLatency){
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return true;
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}
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return std::is_same<packet, RtpPacket>::value ? false : (mergeWriteMS <= 0);
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}
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@ -173,6 +173,7 @@ const string kAuthBasic = RTSP_FIELD "authBasic";
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const string kHandshakeSecond = RTSP_FIELD "handshakeSecond";
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const string kKeepAliveSecond = RTSP_FIELD "keepAliveSecond";
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const string kDirectProxy = RTSP_FIELD "directProxy";
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const string KLowLatency = RTSP_FIELD"lowLatency";
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static onceToken token([]() {
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// 默认Md5方式认证
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@ -180,6 +181,7 @@ static onceToken token([]() {
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mINI::Instance()[kHandshakeSecond] = 15;
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mINI::Instance()[kKeepAliveSecond] = 15;
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mINI::Instance()[kDirectProxy] = 1;
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mINI::Instance()[KLowLatency] = 0;
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});
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} // namespace Rtsp
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@ -206,10 +208,14 @@ const string kAudioMtuSize = RTP_FIELD "audioMtuSize";
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// rtp包最大长度限制,单位是KB
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const string kRtpMaxSize = RTP_FIELD "rtpMaxSize";
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const string KLowLatency = RTP_FIELD "lowLatency";
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static onceToken token([]() {
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mINI::Instance()[kVideoMtuSize] = 1400;
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mINI::Instance()[kAudioMtuSize] = 600;
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mINI::Instance()[kRtpMaxSize] = 10;
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mINI::Instance()[KLowLatency] = 0;
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});
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} // namespace Rtp
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@ -251,6 +251,9 @@ extern const std::string kKeepAliveSecond;
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// 假定您的拉流源地址不是264或265或AAC,那么你可以使用直接代理的方式来支持rtsp代理
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// 默认开启rtsp直接代理,rtmp由于没有这些问题,是强制开启直接代理的
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extern const std::string kDirectProxy;
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// rtsp 转发是否使用低延迟模式,当开启时,不会缓存rtp包,来提高并发,可以降低一帧的延迟
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extern const std::string KLowLatency;
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} // namespace Rtsp
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////////////RTMP服务器配置///////////
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@ -271,6 +274,8 @@ extern const std::string kVideoMtuSize;
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extern const std::string kAudioMtuSize;
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// rtp包最大长度限制, 单位KB
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extern const std::string kRtpMaxSize;
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// rtp 打包时,低延迟开关,默认关闭(为0),h264存在一帧多个slice(NAL)的情况,在这种情况下,如果开启可能会导致画面花屏
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extern const std::string KLowLatency;
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} // namespace Rtp
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////////////组播配置///////////
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@ -283,11 +283,19 @@ bool H264RtpEncoder::inputFrame(const Frame::Ptr &frame) {
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default: break;
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}
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GET_CONFIG(int,lowLatency,Rtp::KLowLatency);
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if (lowLatency) { // 低延迟模式
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if (_last_frame) {
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flush();
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}
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inputFrame_l(frame, true);
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} else {
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if (_last_frame) {
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//如果时间戳发生了变化,那么markbit才置true
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inputFrame_l(_last_frame, _last_frame->pts() != frame->pts());
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}
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_last_frame = Frame::getCacheAbleFrame(frame);
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}
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return true;
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}
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