{"id":15810,"date":"2025-04-18T22:18:58","date_gmt":"2025-04-18T14:18:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/15810.html"},"modified":"2025-04-18T22:18:58","modified_gmt":"2025-04-18T14:18:58","slug":"%e7%ac%ac%e4%ba%8c%e8%ae%b2%ef%bc%9a%e4%bb%8e%e9%9b%b6%e5%ae%9e%e7%8e%b0rtsp%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%b3%bb%e5%88%97%ef%bc%8c%e5%9f%ba%e4%ba%8eudp%e7%9a%84h-264-rtp%e4%bc%a0%e8%be%93","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/15810.html","title":{"rendered":"\u7b2c\u4e8c\u8bb2\uff1a\u4ece\u96f6\u5b9e\u73b0RTSP\u670d\u52a1\u5668\u7cfb\u5217\uff0c\u57fa\u4e8eUDP\u7684H.264 RTP\u4f20\u8f93"},"content":{"rendered":"<h2>\u4ece\u96f6\u5b9e\u73b0RTSP\u670d\u52a1\u5668\u7cfb\u5217&#xff08;\u4e8c&#xff09;&#xff1a;\u57fa\u4e8eUDP\u7684H.264 RTP\u4f20\u8f93<\/h2>\n<h3>&#x1f4da; \u6838\u5fc3\u77e5\u8bc6\u56de\u987e<\/h3>\n<h4>1. RTP\u534f\u8bae\u62a5\u6587\u7ed3\u6784<\/h4>\n<p>\/\/ RTP\u5934\u90e8\u5b9a\u4e49&#xff08;12\u5b57\u8282&#xff09;<br \/>\nstruct RTPHeader {<br \/>\n    uint8_t cc : 4;        \/\/ CSRC\u8ba1\u6570\u5668<br \/>\n    uint8_t extension : 1; \/\/ \u6269\u5c55\u6807\u5fd7<br \/>\n    uint8_t padding : 1;   \/\/ \u586b\u5145\u6807\u5fd7<br \/>\n    uint8_t version : 2;   \/\/ \u7248\u672c\u53f7&#xff08;\u56fa\u5b9a2&#xff09;<\/p>\n<p>    uint8_t payloadType : 7; \/\/ \u8d1f\u8f7d\u7c7b\u578b&#xff08;H.264&#061;96&#xff09;<br \/>\n    uint8_t marker : 1;      \/\/ \u6807\u8bb0\u4f4d<\/p>\n<p>    uint16_t seq;       \/\/ \u5e8f\u5217\u53f7<br \/>\n    uint32_t timestamp; \/\/ \u65f6\u95f4\u6233&#xff08;90000Hz\u65f6\u949f&#xff09;<br \/>\n    uint32_t ssrc;      \/\/ \u540c\u6b65\u4fe1\u6e90\u6807\u8bc6<br \/>\n};<\/p>\n<h4>2. H.264\u5173\u952e\u6982\u5ff5<\/h4>\n<table>\n<tr>\u672f\u8bed\u8bf4\u660e\u793a\u4f8b\u503c<\/tr>\n<tbody>\n<tr>\n<td>NALU<\/td>\n<td>\u7f51\u7edc\u62bd\u8c61\u5c42\u5355\u5143<\/td>\n<td>0x00000001<\/td>\n<\/tr>\n<tr>\n<td>SPS<\/td>\n<td>\u5e8f\u5217\u53c2\u6570\u96c6<\/td>\n<td>profile&#061;100<\/td>\n<\/tr>\n<tr>\n<td>PPS<\/td>\n<td>\u56fe\u50cf\u53c2\u6570\u96c6<\/td>\n<td>pic_parameter_set_id&#061;0<\/td>\n<\/tr>\n<tr>\n<td>IDR\u5e27<\/td>\n<td>\u5373\u65f6\u89e3\u7801\u5237\u65b0\u5e27<\/td>\n<td>NALU Type&#061;5<\/td>\n<\/tr>\n<tr>\n<td>FU-A<\/td>\n<td>\u5206\u7247\u5355\u5143\u7c7b\u578bA<\/td>\n<td>FU Indicator&#061;28<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>\u5e38\u89c1\u672c\u5730\u6587\u4ef6\u7684H264\u7801\u6d41\u7684Nalu\u7c7b\u578b\u8868<\/h5>\n<table>\n<tr>\u5341\u516d\u8fdb\u5236\u5341\u8fdb\u5236Nalu Type<\/tr>\n<tbody>\n<tr>\n<td>0x67<\/td>\n<td>103<\/td>\n<td>7<\/td>\n<\/tr>\n<tr>\n<td>0x68<\/td>\n<td>104<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>0x06<\/td>\n<td>6<\/td>\n<td>6<\/td>\n<\/tr>\n<tr>\n<td>0x65<\/td>\n<td>101<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>0x61<\/td>\n<td>97<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>0x41<\/td>\n<td>65<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>0x01<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>0x09<\/td>\n<td>9<\/td>\n<td>9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>&#x1f6e0;\ufe0f \u5b9e\u6218\u5f00\u53d1\u6b65\u9aa4<\/h3>\n<h4>1. \u751f\u6210H.264\u6d4b\u8bd5\u6587\u4ef6<\/h4>\n<p>ffmpeg <span class=\"token parameter variable\">-i<\/span> input.mp4 <span class=\"token parameter variable\">-c:v<\/span> copy <span class=\"token parameter variable\">-bsf:v<\/span> h264_mp4toannexb output.h264<\/p>\n<p>\u6216<\/p>\n<p>ffmpeg <span class=\"token parameter variable\">-i<\/span> test.mp4 <span class=\"token parameter variable\">-codec<\/span> copy -bsf: h264_mp4toannexb <span class=\"token parameter variable\">-f<\/span> h264 test.h264<\/p>\n<h4>2. RTP\u5206\u7247\u6253\u5305\u903b\u8f91<\/h4>\n<p>\/\/ H.264\u5206\u7247\u6253\u5305\u793a\u4f8b<br \/>\nvoid send_rtp_packet(const uint8_t* data, int size) {<br \/>\n    \/\/ FU Indicator\u7ed3\u6784<br \/>\n    uint8_t fu_indicator &#061; (nalu_type &amp; 0xE0) | 28; <\/p>\n<p>    \/\/ FU Header\u7ed3\u6784<br \/>\n    uint8_t fu_header &#061; nalu_type &amp; 0x1F;<br \/>\n    if (is_first_packet) fu_header |&#061; 0x80; \/\/ S\u6807\u8bb0<br \/>\n    if (is_last_packet)  fu_header |&#061; 0x40; \/\/ E\u6807\u8bb0<\/p>\n<p>    \/\/ \u6784\u9020RTP\u5305<br \/>\n    RTPPacket packet;<br \/>\n    memcpy(packet.payload, &amp;fu_indicator, 1);<br \/>\n    memcpy(packet.payload&#043;1, &amp;fu_header, 1);<br \/>\n    memcpy(packet.payload&#043;2, data, size-2);<\/p>\n<p>    sendto(rtp_socket, &amp;packet, sizeof(packet), 0, &#8230;);<br \/>\n}<\/p>\n<h4>3. \u5173\u952e\u65f6\u5e8f\u63a7\u5236<\/h4>\n<p>\/\/ \u89c6\u9891\u5e27\u53d1\u9001\u95f4\u9694\u63a7\u5236&#xff08;25fps&#xff09;<br \/>\nconst int FRAME_INTERVAL &#061; 40; \/\/ ms<br \/>\nauto last_send_time &#061; std::chrono::steady_clock::now();<\/p>\n<p>while (true) {<br \/>\n    auto now &#061; std::chrono::steady_clock::now();<br \/>\n    auto elapsed &#061; std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(now &#8211; last_send_time);<\/p>\n<p>    if (elapsed.count() &gt;&#061; FRAME_INTERVAL) {<br \/>\n        send_rtp_frame();<br \/>\n        last_send_time &#061; now;<br \/>\n    }<br \/>\n}<\/p>\n<h3>&#x1f4ca; RTP\u5305\u7ed3\u6784\u793a\u4f8b<\/h3>\n<table>\n<tr>\u504f\u79fb\u91cf\u5b57\u6bb5\u503c\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>0x00<\/td>\n<td>Version<\/td>\n<td>0x80<\/td>\n<td>RTP\u7248\u672c2&#xff0c;\u65e0\u6269\u5c55<\/td>\n<\/tr>\n<tr>\n<td>0x01<\/td>\n<td>Payload Type<\/td>\n<td>0x60<\/td>\n<td>H.264\u8d1f\u8f7d\u7c7b\u578b<\/td>\n<\/tr>\n<tr>\n<td>0x02<\/td>\n<td>Sequence<\/td>\n<td>0x1234<\/td>\n<td>\u9012\u589e\u5e8f\u5217\u53f7<\/td>\n<\/tr>\n<tr>\n<td>0x04<\/td>\n<td>Timestamp<\/td>\n<td>0xABCDEF<\/td>\n<td>90000Hz\u65f6\u949f\u57fa\u51c6<\/td>\n<\/tr>\n<tr>\n<td>0x08<\/td>\n<td>SSRC<\/td>\n<td>0xDEADBEEF<\/td>\n<td>\u540c\u6b65\u4fe1\u6e90\u6807\u8bc6<\/td>\n<\/tr>\n<tr>\n<td>0x0C<\/td>\n<td>FU Indicator<\/td>\n<td>0x7C<\/td>\n<td>F&#061;0, NRI&#061;3, Type&#061;28<\/td>\n<\/tr>\n<tr>\n<td>0x0D<\/td>\n<td>FU Header<\/td>\n<td>0x85<\/td>\n<td>S&#061;1, E&#061;0, Type&#061;5<\/td>\n<\/tr>\n<tr>\n<td>0x0E<\/td>\n<td>Payload Data<\/td>\n<td>\u2026<\/td>\n<td>H.264\u5206\u7247\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u26a0\ufe0f \u5f00\u53d1\u6ce8\u610f\u4e8b\u9879<\/h3>\n<li>MTU\u9650\u5236&#xff1a;UDP\u5305\u5efa\u8bae\u4e0d\u8d85\u8fc71400\u5b57\u8282<\/li>\n<li>\u65f6\u95f4\u6233\u540c\u6b65&#xff1a;\u4f7f\u752890000Hz\u65f6\u949f\u57fa\u51c6<\/li>\n<li>\u5173\u952e\u5e27\u5904\u7406&#xff1a;IDR\u5e27\u9700\u8981\u5b8c\u6574\u53d1\u9001SPS\/PPS<\/li>\n<li>\u7f51\u7edc\u5b57\u8282\u5e8f&#xff1a;\u6240\u6709\u6574\u6570\u5b57\u6bb5\u9700\u8f6c\u6362<\/li>\n<li>\u4e22\u5305\u5904\u7406&#xff1a;\u9700\u5b9e\u73b0\u7b80\u5355\u91cd\u4f20\u673a\u5236&#xff08;\u540e\u7eed\u8bfe\u7a0b\u8bb2\u89e3&#xff09;<\/li>\n<h3>&#x1f680; \u6548\u679c\u9a8c\u8bc1<\/h3>\n<p><span class=\"token comment\"># \u4f7f\u7528FFplay\u9a8c\u8bc1\u6d41\u5a92\u4f53<\/span><br \/>\nffplay <span class=\"token parameter variable\">-rtsp_transport<\/span> udp rtsp:\/\/localhost:554\/live<\/p>\n<h3>&#x1f4da; \u5b66\u4e60\u8d44\u6e90\u63a8\u8350<\/h3>\n<li>RFC3550 &#8211; RTP\u534f\u8bae\u89c4\u8303(https:\/\/tools.ietf.org\/html\/rfc3550)<\/li>\n<li>H.264\u7f16\u7801\u767d\u76ae\u4e66(https:\/\/www.itu.int\/rec\/T-REC-H.264)<\/li>\n<li>Live555\u5f00\u6e90\u9879\u76ee(http:\/\/www.live555.com\/)<\/li>\n<p>\u4e0b\u671f\u9884\u544a&#xff1a;\u7b2c\u4e09\u8bb2\u300a\u57fa\u4e8eUDP\u7684AAC\u97f3\u9891\u4f20\u8f93\u5b9e\u73b0\u300b\u5373\u5c06\u53d1\u5e03&#xff01;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.2k\u6b21\uff0c\u70b9\u8d5e30\u6b21\uff0c\u6536\u85cf3\u6b21\u3002\u4e0b\u671f\u9884\u544a\uff1a\u7b2c\u4e09\u8bb2\u300a\u57fa\u4e8eUDP\u7684AAC\u97f3\u9891\u4f20\u8f93\u5b9e\u73b0\u300b\u5373\u5c06\u53d1\u5e03\uff01<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1051,193,43,1050],"topic":[],"class_list":["post-15810","post","type-post","status-publish","format-standard","hentry","category-server","tag-h-264","tag-udp","tag-43","tag-1050"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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