\n| \u5185\u5b58\u5b50\u7cfb\u7edf<\/td>\n | 768KB SRAM + PSRAM\u652f\u6301<\/td>\n | \u96f6\u7b49\u5f85\u6570\u636e\u5b58\u53d6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u5728\u5b9e\u9645\u6d4b\u8bd5\u4e2d，\u4f7f\u7528SC2336\u4f20\u611f\u5668\u901a\u8fc7MIPI-CSI\u63a5\u53e3\u91c7\u96c61080p\u539f\u59cb\u6570\u636e，\u7ecfISP\u5904\u7406\u540e\u9001\u5165H.264\u7f16\u7801\u5668，\u6574\u4e2a\u6d41\u7a0b\u7684\u7aef\u5230\u7aef\u5ef6\u8fdf\u53ef\u63a7\u5236\u572850ms\u4ee5\u5185\u3002\u8fd9\u79cd\u786c\u4ef6\u7ea7\u7684\u534f\u540c\u5de5\u4f5c\u65b9\u5f0f，\u76f8\u6bd4\u4f20\u7edf\u7684\u8f6f\u4ef6\u7f16\u7801\u65b9\u6848，\u4e0d\u4ec5\u5927\u5e45\u964d\u4f4e\u4e86CPU\u8d1f\u8f7d，\u8fd8\u663e\u8457\u63d0\u5347\u4e86\u80fd\u6548\u6bd4\u3002<\/p>\n \u6ce8\u610f：\u542f\u7528ISP\u6d41\u6c34\u7ebf\u65f6，\u9700\u8981\u6839\u636e\u4f20\u611f\u5668\u7279\u6027\u914d\u7f6e\u76f8\u5e94\u7684JSON\u53c2\u6570\u6587\u4ef6\u3002\u4e50\u946b\u4e3a\u5e38\u89c1\u4f20\u611f\u5668\u63d0\u4f9b\u4e86\u4f18\u5316\u914d\u7f6e\u6a21\u677f，\u5f00\u53d1\u8005\u53ef\u6839\u636e\u5b9e\u9645\u573a\u666f\u5fae\u8c03\u8fd9\u4e9b\u53c2\u6570\u3002<\/p>\n 2. \u5f00\u53d1\u73af\u5883\u642d\u5efa\u4e0e\u57fa\u7840\u914d\u7f6e<\/h3>\n\u5f00\u59cb\u4e4b\u524d，\u9700\u8981\u51c6\u5907\u4ee5\u4e0b\u786c\u4ef6\u7ec4\u4ef6：<\/p>\n \n- ESP32-P4\u5f00\u53d1\u677f（\u63a8\u8350ESP32-P4-Function-EV-Board）<\/li>\n
- MIPI-CSI\u6444\u50cf\u5934\u6a21\u5757（\u5982SC2336\u6216OV5645）<\/li>\n
- \u7f51\u7edc\u6269\u5c55\u6a21\u5757（SDIO WiFi\u6216\u4ee5\u592a\u7f51PHY）<\/li>\n<\/ul>\n
\u8f6f\u4ef6\u5f00\u53d1\u73af\u5883\u57fa\u4e8eESP-IDF v5.5.1\u6216\u66f4\u9ad8\u7248\u672c，\u9700\u8981\u5b89\u88c5\u4ee5\u4e0b\u7ec4\u4ef6：<\/p>\n # \u514b\u9686\u5fc5\u8981\u7684\u7ec4\u4ef6\u5e93
\ngit clone –recursive https:\/\/github.com\/espressif\/esp-video-components.git
\ngit clone https:\/\/github.com\/espressif\/esp-adf.git<\/p>\n # \u8bbe\u7f6e\u73af\u5883\u53d8\u91cf
\nexport IDF_PATH=~\/esp\/esp-idf
\nexport ADF_PATH=~\/esp\/esp-adf<\/p>\n \u5173\u952e\u914d\u7f6e\u6b65\u9aa4\u5305\u62ec：<\/p>\n - \u542f\u7528ISP\u6d41\u6c34\u7ebf\u63a7\u5236\u5668：\u5728menuconfig\u4e2d\u5f00\u542fCONFIG_ESP_ISP_ENABLE\u9009\u9879<\/li>\n
- \u914d\u7f6e\u4f20\u611f\u5668\u53c2\u6570：\u6839\u636e\u4f7f\u7528\u7684\u6444\u50cf\u5934\u6a21\u5757，\u9009\u62e9\u76f8\u5e94\u7684\u9a71\u52a8\u914d\u7f6e<\/li>\n
- \u8bbe\u7f6e\u7f16\u7801\u53c2\u6570：\u8c03\u6574H.264\u7684\u7801\u7387\u63a7\u5236\u6a21\u5f0f\u548c\u91cf\u5316\u53c2\u6570<\/li>\n
\/\/ \u5178\u578b\u7684\u4f20\u611f\u5668\u521d\u59cb\u5316\u4ee3\u7801\u793a\u4f8b
\nsensor_config_t camera_cfg = {
\n .mode = CAMERA_MODE_VIDEO,
\n .framesize = FRAMESIZE_1080P,
\n .pixel_format = PIXFORMAT_RAW10,
\n .fb_count = 3,
\n .sccb_i2c_port = I2C_NUM_0
\n};
\nesp_err_t err = esp_camera_init(&camera_cfg);<\/p>\n 3. H.264\u7f16\u7801\u53c2\u6570\u4f18\u5316\u7b56\u7565<\/h3>\n\u786c\u4ef6\u7f16\u7801\u5668\u867d\u7136\u63d0\u4f9b\u4e86\u57fa\u7840\u529f\u80fd，\u4f46\u8981\u83b7\u5f97\u6700\u4f73\u6548\u679c\u9700\u8981\u7cbe\u7ec6\u7684\u53c2\u6570\u8c03\u4f18\u3002\u4ee5\u4e0b\u662f\u7ecf\u8fc7\u5b9e\u9645\u9a8c\u8bc1\u7684\u4f18\u5316\u65b9\u6848：<\/p>\n \u7801\u7387\u63a7\u5236\u7b56\u7565：<\/p>\n \n- \u4f7f\u7528CBR（\u6052\u5b9a\u7801\u7387）\u6a21\u5f0f\u786e\u4fdd\u7f51\u7edc\u7a33\u5b9a\u6027<\/li>\n
- \u8bbe\u7f6e\u6700\u5927\u7801\u7387\u4e3a4Mbps（1080p）\u62162Mbps（720p）<\/li>\n
- \u542f\u7528\u573a\u666f\u53d8\u5316\u68c0\u6d4b，\u52a8\u6001\u8c03\u6574GOP\u7ed3\u6784<\/li>\n<\/ul>\n
\u8d28\u91cf\u4f18\u5316\u6280\u5de7：<\/p>\n \/\/ \u914d\u7f6e\u7f16\u7801\u5668\u53c2\u6570
\nh264_encoder_config_t enc_cfg = {
\n .profile = H264_PROFILE_HIGH,
\n .level = H264_LEVEL_4_2,
\n .rate_control = {
\n .mode = H264_RC_CBR,
\n .target_bitrate = 4000, \/\/ 4Mbps
\n .max_bitrate = 6000, \/\/ \u5cf0\u503c\u7801\u7387
\n .vbv_buffer_size = 8000 \/\/ \u89c6\u9891\u7f13\u51b2\u9a8c\u8bc1\u5668\u5927\u5c0f
\n },
\n .quant = {
\n .qp_min = 22,
\n .qp_max = 38,
\n .qp_init = 26
\n }
\n};<\/p>\n \u5728\u52a8\u6001\u573a\u666f\u4e2d，\u5efa\u8bae\u542f\u7528\u81ea\u9002\u5e94\u91cf\u5316（AQ）\u529f\u80fd，\u6839\u636e\u56fe\u50cf\u5185\u5bb9\u590d\u6742\u5ea6\u5206\u914d\u7801\u7387\u3002\u6d4b\u8bd5\u8868\u660e，\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5728\u76f8\u540c\u7801\u7387\u4e0b\u63d0\u5347\u4e3b\u89c2\u8d28\u91cf\u7ea615-20%\u3002<\/p>\n \u63d0\u793a：\u907f\u514d\u4f7f\u7528RAW10\u683c\u5f0f\u76f4\u63a5\u7f16\u7801，\u8fd9\u4f1a\u663e\u8457\u589e\u52a0\u7801\u7387\u3002\u5efa\u8bae\u901a\u8fc7ISP\u8f6c\u6362\u4e3aYUV420\u683c\u5f0f，\u5728\u4fdd\u8bc1\u8d28\u91cf\u7684\u540c\u65f6\u51cf\u5c1150%\u4ee5\u4e0a\u7684\u6570\u636e\u91cf\u3002<\/p>\n 4. \u7f51\u7edc\u4f20\u8f93\u534f\u8bae\u6808\u4f18\u5316<\/h3>\n\u7f51\u7edc\u4f20\u8f93\u662f\u89c6\u9891\u6d41\u7cfb\u7edf\u7684\u53e6\u4e00\u4e2a\u5173\u952e\u73af\u8282\u3002ESP32-P4\u652f\u6301\u591a\u79cd\u8fde\u63a5\u65b9\u5f0f，\u5404\u6709\u5176\u9002\u7528\u573a\u666f：<\/p>\n SDIO WiFi\u4e0e\u4ee5\u592a\u7f51\u6027\u80fd\u5bf9\u6bd4：<\/p>\n \n\u7f51\u7edc\u7c7b\u578b\u5ef6\u8fdf\u7279\u6027\u6700\u5927\u541e\u5410\u91cf\u9002\u7528\u573a\u666f<\/tr>\n \n\n| SDIO WiFi<\/td>\n | 20-50ms\u6ce2\u52a8<\/td>\n | 15-20Mbps<\/td>\n | \u79fb\u52a8\u8bbe\u5907\u3001\u7075\u6d3b\u90e8\u7f72<\/td>\n<\/tr>\n | \n| \u4ee5\u592a\u7f51<\/td>\n | <10ms\u7a33\u5b9a<\/td>\n | 50-100Mbps<\/td>\n | \u56fa\u5b9a\u5b89\u88c5\u3001\u5de5\u4e1a\u73af\u5883<\/td>\n<\/tr>\n | \n| SPI WiFi<\/td>\n | 50-100ms<\/td>\n | 5-8Mbps<\/td>\n | \u6210\u672c\u654f\u611f\u5e94\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u5b9e\u6d4b\u6570\u636e\u663e\u793a，\u5728720p@30fps\u573a\u666f\u4e0b，SDIO WiFi\u7684\u5ef6\u8fdf\u901a\u5e38\u5728110-220ms\u95f4\u6ce2\u52a8，\u800c\u4ee5\u592a\u7f51\u53ef\u4ee5\u7a33\u5b9a\u572880ms\u4ee5\u5185\u3002\u8fd9\u79cd\u5dee\u5f02\u4e3b\u8981\u6765\u81eaWiFi\u534f\u8bae\u6808\u7684\u5904\u7406\u5f00\u9500\u548c\u65e0\u7ebf\u73af\u5883\u7684\u4e0d\u786e\u5b9a\u6027\u3002<\/p>\n RTSP\u670d\u52a1\u5668\u4f18\u5316\u63aa\u65bd：<\/p>\n - \u8c03\u6574TCP\u7a97\u53e3\u5927\u5c0f：\u589e\u52a0\u81f364KB\u4ee5\u51cf\u5c11\u7f51\u7edc\u6ce2\u52a8\u5f71\u54cd<\/li>\n
- \u542f\u7528UDP\u4f20\u8f93\u5907\u7528\u65b9\u6848：\u5728WiFi\u8d28\u91cf\u8f83\u5dee\u65f6\u81ea\u52a8\u5207\u6362<\/li>\n
- \u5b9e\u73b0\u667a\u80fd\u91cd\u4f20\u673a\u5236：\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u52a8\u6001\u8c03\u6574\u91cd\u4f20\u7b56\u7565<\/li>\n
\/\/ RTSP\u4f1a\u8bdd\u914d\u7f6e\u793a\u4f8b
\nrtsp_server_config_t rtsp_cfg = {
\n .transport_mode = RTSP_TRANSPORT_TCP,
\n .session_timeout = 60,
\n .max_clients = 3,
\n .video_codec = RTSP_VIDEO_CODEC_H264,
\n .audio_codec = RTSP_AUDIO_CODEC_NONE
\n};<\/p>\n \/\/ \u8bbe\u7f6e\u7f51\u7edc\u7f13\u51b2\u53c2\u6570
\nrtp_transport_config_t rtp_cfg = {
\n .buffer_size = 128 * 1024, \/\/ 128KB\u7f13\u51b2
\n .packet_size = 1400, \/\/ \u9002\u914dMTU
\n .retransmit_timeout = 200 \/\/ \u91cd\u4f20\u8d85\u65f6200ms
\n};<\/p>\n 5. \u7cfb\u7edf\u7ea7\u6027\u80fd\u8c03\u4f18\u4e0e\u5b9e\u6218\u6d4b\u8bd5<\/h3>\n\u8981\u83b7\u5f97\u6700\u4f73\u6027\u80fd，\u9700\u8981\u4ece\u7cfb\u7edf\u5c42\u9762\u8fdb\u884c\u6574\u4f53\u4f18\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u6709\u6548\u65b9\u6cd5：<\/p>\n \u5185\u5b58\u7ba1\u7406\u4f18\u5316：<\/p>\n \n- \u4f7f\u7528\u96f6\u62f7\u8d1d\u6280\u672f\u51cf\u5c11\u6570\u636e\u642c\u8fd0<\/li>\n
- \u4e3a\u89c6\u9891\u6d41\u6c34\u7ebf\u5206\u914d\u4e13\u7528PSRAM\u533a\u57df<\/li>\n
- \u5b9e\u73b0\u52a8\u6001\u5185\u5b58\u6c60\u7ba1\u7406，\u907f\u514d\u788e\u7247\u5316<\/li>\n<\/ul>\n
\u5b9e\u65f6\u6027\u4fdd\u969c\u63aa\u65bd：<\/p>\n \/\/ \u8bbe\u7f6e\u4efb\u52a1\u4f18\u5148\u7ea7
\nxTaskCreatePinnedToCore(video_capture_task, "cap", 4096, NULL, 5, NULL, 1);
\nxTaskCreatePinnedToCore(encoding_task, "enc", 4096, NULL, 6, NULL, 1);
\nxTaskCreatePinnedToCore(network_task, "net", 4096, NULL, 4, NULL, 0);<\/p>\n \/\/ \u914d\u7f6e\u4e2d\u65ad\u4eb2\u548c\u6027
\nesp_intr_set_cpu(CSI_INTR_SOURCE, 1); \/\/ \u5c06CSI\u4e2d\u65ad\u7ed1\u5b9a\u5230\u6838\u5fc31<\/p>\n \u6027\u80fd\u6d4b\u8bd5\u65b9\u6cd5\u8bba：<\/p>\n - \u7aef\u5230\u7aef\u5ef6\u8fdf\u6d4b\u91cf：\u4f7f\u7528\u786c\u4ef6\u89e6\u53d1\u4fe1\u53f7\u548c\u65f6\u95f4\u6233\u8bb0\u5f55<\/li>\n
- \u753b\u8d28\u5ba2\u89c2\u8bc4\u4f30：\u8ba1\u7b97PSNR\u548cSSIM\u6307\u6807<\/li>\n
- \u7f51\u7edc\u9002\u5e94\u6027\u6d4b\u8bd5：\u5728\u4e0d\u540c\u4e22\u5305\u7387\u4e0b\u7684\u8868\u73b0\u8bc4\u4f30<\/li>\n
\u6d4b\u8bd5\u7ed3\u679c\u8868\u660e，\u7ecf\u8fc7\u4f18\u5316\u7684\u7cfb\u7edf\u5728720p@30fps\u6761\u4ef6\u4e0b\u53ef\u4ee5\u5b9e\u73b0：<\/p>\n \n- \u7aef\u5230\u7aef\u5ef6\u8fdf：80-120ms（\u4ee5\u592a\u7f51）\u3001110-220ms（SDIO WiFi）<\/li>\n
- CPU\u5360\u7528\u7387：<30%（\u5305\u542b\u6240\u6709\u5904\u7406\u4efb\u52a1）<\/li>\n
- \u5185\u5b58\u4f7f\u7528：<2MB（\u5305\u62ec\u534f\u8bae\u6808\u548c\u7f13\u51b2）<\/li>\n<\/ul>\n
\u5728\u5b9e\u9645\u90e8\u7f72\u4e2d，\u6211\u53d1\u73b0\u6700\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u7684\u5f80\u5f80\u662f\u7f51\u7edc\u6ce2\u52a8\u5bfc\u81f4\u7684\u5361\u987f\u3002\u901a\u8fc7\u5b9e\u73b0\u81ea\u9002\u5e94\u7684\u7801\u7387\u63a7\u5236\u7b97\u6cd5，\u53ef\u4ee5\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u52a8\u6001\u8c03\u6574\u7f16\u7801\u53c2\u6570，\u663e\u8457\u63d0\u5347\u89c2\u770b\u4f53\u9a8c\u3002\u4f8b\u5982，\u5f53\u68c0\u6d4b\u5230\u7f51\u7edc\u5e26\u5bbd\u4e0b\u964d\u65f6，\u81ea\u52a8\u964d\u4f4e\u5206\u8fa8\u7387\u548c\u5e27\u7387，\u4f18\u5148\u4fdd\u8bc1\u6d41\u7545\u6027\u3002<\/p>\n \u53e6\u4e00\u4e2a\u5b9e\u7528\u6280\u5de7\u662f\u5408\u7406\u914d\u7f6eI\u5e27\u95f4\u9694\u3002\u5728\u76d1\u63a7\u573a\u666f\u4e2d，\u5efa\u8bae\u5c06GOP\u5927\u5c0f\u8bbe\u7f6e\u4e3a\u5e27\u7387\u76842-3\u500d，\u8fd9\u6837\u65e2\u4fdd\u8bc1\u4e86\u968f\u673a\u63a5\u5165\u7684\u53ca\u65f6\u6027，\u53c8\u907f\u514d\u4e86\u8fc7\u591a\u7684I\u5e27\u5360\u7528\u5e26\u5bbd\u3002\u5bf9\u4e8e\u9700\u8981\u66f4\u4f4e\u5ef6\u8fdf\u7684\u89c6\u9891\u5bf9\u8bb2\u573a\u666f，\u53ef\u4ee5\u4f7f\u7528\u66f4\u77ed\u7684GOP\u751a\u81f3\u5168I\u5e27\u7f16\u7801\u3002<\/p>\n \u6700\u540e\u63d0\u9192\u4e00\u70b9，\u6563\u70ed\u7ba1\u7406\u5728\u957f\u65f6\u95f4\u8fd0\u884c\u4e2d\u81f3\u5173\u91cd\u8981\u3002ESP32-P4\u5728\u9ad8\u8d1f\u8f7d\u4e0b\u4f1a\u4ea7\u751f\u53ef\u89c2\u7684\u70ed\u91cf，\u5efa\u8bae\u6dfb\u52a0\u9002\u5f53\u7684\u6563\u70ed\u63aa\u65bd\u5e76\u5728\u8f6f\u4ef6\u4e2d\u5b9e\u73b0\u6e29\u5ea6\u76d1\u63a7，\u5f53\u82af\u7247\u6e29\u5ea6\u8d85\u8fc7\u9608\u503c\u65f6\u81ea\u52a8\u964d\u4f4e\u7f16\u7801\u590d\u6742\u5ea6\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7a33\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u4ece\u96f6\u6784\u5efaESP32-P4 H.264\u89c6\u9891\u6d41\u670d\u52a1\u5668：\u786c\u4ef6\u52a0\u901f\u4e0e\u7f51\u7edc\u4f20\u8f93\u7684\u6df1\u5ea6\u8c03\u4f18
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