{"id":532,"date":"2022-04-08T19:53:50","date_gmt":"2022-04-08T11:53:50","guid":{"rendered":"https:\/\/himmel.tech\/wp\/?p=532"},"modified":"2022-04-08T19:53:50","modified_gmt":"2022-04-08T11:53:50","slug":"%e4%b8%ba-headless-linux-%e5%ae%89%e8%a3%85-virtual-camera-microphone","status":"publish","type":"post","link":"https:\/\/himmel.tech\/wp\/?p=532","title":{"rendered":"\u4e3a Headless Linux \u5b89\u88c5 Virtual Camera + Microphone"},"content":{"rendered":"\n<p>\u6700\u8fd1\u5728\u7814\u7a76 WebRTC\uff0c\u4f46\u7531\u4e8e\u672c\u5730\u73af\u5883\u4e0d\u5177\u6709 Camara \u548c Microphone\uff0c\u6d4b\u8bd5\u5c31\u53d8\u5f97\u4e0d\u662f\u5f88\u65b9\u4fbf\u3002\u518d\u52a0\u4e0a\u6211\u628a\u5f00\u53d1\u73af\u5883\u585e\u8fdb\u4e86\u7684 VM \u4e2d\uff0cChrome \u4f1a\u963b\u6b62\u5728\u975e HTTPS \u9875\u9762\u4e0a\u542f\u52a8\u76f8\u5173\u670d\u52a1\uff0c\u56e0\u6b64\u8003\u8651\u76f4\u63a5\u5728 VM \u4e2d\u8fdb\u884c\u4e00\u4e9b\u901a\u8bdd\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<div class=\"wp-block-jetpack-markdown\"><p>\u89c6 OS \u4e0d\u540c\uff0c\u865a\u62df\u8bbe\u5907\u7684\u5b9e\u73b0\u65b9\u6848\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u5176\u4e2d Windows \u548c MacOS \u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff1a<a href=\"https:\/\/obsproject.com\/\">OBS<\/a> \u641e\u5b9a Camera \u548c\u89c6\u9891\u6e90\uff0c<a href=\"https:\/\/vb-audio.com\/Cable\/\">VB-CABLE<\/a> \u641e\u5b9a Microphone\uff0c\u4e00\u4e2a\u80fd\u9009\u62e9\u8f93\u51fa\u8bbe\u5907\u7684\u97f3\u4e50\u64ad\u653e\u5668 (\u4f8b\u5982 QQ \u97f3\u4e50) \u548c\u97f3\u9891\u6e90\u3002<\/p>\n<\/div>\n\n\n\n<p>Linux \u7684\u60c5\u51b5\u5219\u6709\u6240\u4e0d\u540c\u3002\u867d\u7136 OBS \u4e5f\u6709 Linux \u7248\u672c\uff0c\u4f46\u5b9e\u8df5\u4e0b\u6765\u5b89\u88c5\u65f6\u4f1a\u5b58\u5728\u5404\u79cd\u4f9d\u8d56\u95ee\u9898\uff0c\u5e76\u4e0d\u600e\u4e48\u597d\u7528\uff1b\u53e6\u5916\u4e5f\u8fd8\u662f\u9700\u8981\u5355\u72ec\u7684\u65b9\u6848\u6765\u5b9e\u73b0 Virtual Microphone\u3002\u56e0\u6b64\u6211\u91c7\u7528\u4e86\u4e0b\u8ff0\u65b9\u6848\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>tigervnc + x11 + xfce4 + chromium &#8211; \u63d0\u4f9b\u8fdc\u7a0b\u64cd\u4f5c\u3001\u8c03\u8bd5\u73af\u5883\uff1b<\/li><li>v4l2loopback \u5185\u6838\u6a21\u5757 &#8211; \u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u89c6\u9891\u7684\u56de\u73af\u8bbe\u5907\uff1b<\/li><li>pulseaudio module-pipe-source \u6a21\u5757 &#8211; \u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u97f3\u9891\u7684 pipe source\uff1b<\/li><li>ffmpeg &#8211; \u89e3\u7801\u5a92\u4f53\u6587\u4ef6\uff0c\u91cd\u7f16\u7801\u97f3\u89c6\u9891\u6d41\u5e76\u8f93\u51fa\u5230\u8bbe\u5907\u3002<\/li><\/ul>\n\n\n\n<!--more-->\n\n\n\n<p>\u5728 Headless Linux \u4e0a\u5b89\u88c5 VNC \u548c GUI \u73af\u5883\u7684\u65b9\u6cd5\u5df2\u7ecf\u6709\u5f88\u591a\u6587\u7ae0\u4ecb\u7ecd\u4e86\uff0c\u56e0\u6b64\u672c\u6587\u5c31\u8df3\u8fc7\u4e0d\u63d0\u4e86\uff0c\u7740\u91cd\u63cf\u8ff0\u97f3\u89c6\u9891\u6a21\u5757\u7684\u5b89\u88c5\u90e8\u5206\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">v4l2loopback \u6a21\u5757<\/h2>\n\n\n\n<p>v4l2loopback \u662f\u4e00\u4e2a\u5185\u6838\u6a21\u5757\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528 <code>modprobe<\/code> \u547d\u4ee4\u5b89\u88c5\u3002\u4e0d\u8fc7\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u60f3\u8ba9 Chromium \u80fd\u591f\u6b63\u786e\u6355\u83b7\u89c6\u9891\uff0c\u8fd8\u9700\u8981\u4f20\u9012\u4e00\u4e9b\u989d\u5916\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>max_buffer=2 &#8211; \u6700\u591a\u7f13\u5b58 2 \u5e27<\/li><li>video_nr=10 &#8211; \u6307\u5b9a\u8bbe\u5907\u8def\u5f84\u4e3a <code>\/dev\/video10<\/code><\/li><li>exclusive_caps=1 &#8211; \u5f00\u542f\u72ec\u5360\u6355\u83b7<\/li><\/ul>\n\n\n\n<p>\u56e0\u6b64\u6a21\u5757\u52a0\u8f7d\u548c\u5378\u8f7d\u7684\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"shell\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo modprobe v4l2loopback max_buffers=2 exclusive_caps=1 video_nr=10 card_label=\"VirtualCam\"\nsudo modprobe -r v4l2loopback<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">pulseaudio \u6a21\u5757<\/h2>\n\n\n\n<p>pulseaudio \u5185\u5efa\u6709 module-pipe-source \u6a21\u5757\uff0c\u8be5\u6a21\u5757\u5141\u8bb8\u4ece Linux \u7ba1\u9053\u6587\u4ef6\u4e2d\u63a5\u6536\u6307\u5b9a\u683c\u5f0f\u7684\u97f3\u9891\u6d41\u6765\u4f5c\u4e3a\u4e00\u4e2a\u97f3\u9891 Source\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u4f20\u9012\u4e00\u4e9b\u989d\u5916\u53c2\u6570\u6765\u63cf\u8ff0\u6570\u636e\u683c\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>format=s16le &#8211; \u6570\u636e\u683c\u5f0f\u4e3a PCM signed 16-bit little-endian<\/li><li>rate=44100 &#8211; \u91c7\u6837\u7387\u4e3a 44100 Hz<\/li><li>channels=1 &#8211; \u5355\u58f0\u9053<\/li><li>source_name=virtmic &#8211; \u7ba1\u7406\u540d\u79f0<\/li><li>file=\/tmp\/virtmic.input &#8211; \u5bf9\u5e94\u7684\u7ba1\u9053\u6587\u4ef6<\/li><\/ul>\n\n\n\n<p>\u52a0\u8f7d\u7684\u540c\u65f6\u4e0d\u8981\u5fd8\u8bb0\u5c06\u5176\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4 source\uff0c\u53e6\u5916\u8fd8\u53ef\u4ee5\u5f00\u542f\u4e00\u4e2a <code>arecord<\/code> \u8fdb\u7a0b\u6765\u907f\u514d\u7ba1\u9053\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002\u56e0\u6b64\u8fd9\u90e8\u5206\u7684\u52a0\u8f7d\u548c\u5378\u8f7d\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">PIPE_MODULE_NO=\"\/tmp\/pa-module-$RANDOM\"\n\npactl load-module module-pipe-source source_name=virtmic file=\/tmp\/virtmic.input format=s16le rate=44100 channels=1 > ${PIPE_SOURCE_NO}\npactl set-default-source virtmic\narecord \/dev\/null\n\npactl unload-module `cat ${PIPE_MODULE_NO}`<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">ffmpeg \u63a8\u6d41<\/h2>\n\n\n\n<p>\u4e24\u4e2a\u865a\u62df\u8bbe\u5907\u51c6\u5907\u597d\u540e\uff0c\u8fd8\u9700\u8981\u628a\u7528\u6237\u52a0\u5165 <code>audio<\/code> <code>video<\/code> \u7ec4\u4e2d (\u5f53\u7136\u60f3\u5077\u61d2\u5176\u5b9e\u4e5f\u53ef\u4ee5\u65e0\u8111 sudo)\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u63a8\u6d41\u4e86\u3002\u8fd9\u91cc\u4f7f\u7528\u4e86 ffmpeg \u8fdb\u884c\u63a8\u6d41\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u8f93\u51fa\u7684\u97f3\u89c6\u9891\u683c\u5f0f\u5fc5\u987b\u4e0e\u524d\u8ff0\u8bbe\u5907\u53c2\u6570\u76f8\u5339\u914d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><code>-y<\/code> &#8211; \u76f4\u63a5\u8986\u76d6\u6587\u4ef6<\/li><li><code>-re<\/code> &#8211; \u4ee5\u539f\u59cb\u5e27\u7387\u8bfb\u5165<\/li><li><code>-stream_loop -1<\/code> &#8211; \u59cb\u7ec8\u5faa\u73af\u64ad\u653e<\/li><li><code>-i output.mp4<\/code> &#8211; \u8f93\u5165\u7684\u89c6\u9891\u6587\u4ef6<\/li><li><code>-f v4l2 \/dev\/video10<\/code> &#8211; \u89c6\u9891\u4ee5 v4l2 \u683c\u5f0f\u7f16\u7801\uff0c\u5199\u5165 <code>\/dev\/video10<\/code><\/li><li><code>-f s16le -ar 44100 -ac 1 \/tmp\/virtmic.input<\/code> &#8211; \u97f3\u9891\u4ee5 s16le 44100Hz \u5355\u58f0\u9053\u65b9\u5f0f\u7f16\u7801\uff0c\u5199\u5165 <code>\/tmp\/virtmic.input<\/code><\/li><\/ul>\n\n\n\n<p>\u56e0\u6b64\u8fd9\u90e8\u5206\u63a8\u6d41\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"shell\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ffmpeg -y -re -stream_loop -1 -i output.mp4 -f v4l2 \/dev\/video10 -f s16le -ar 44100 -ac 1 \/tmp\/virtmic.input<\/pre>\n\n\n\n<p>\u5982\u679c\u770b\u5230 ffmpeg \u542f\u52a8\u4e14\u8fdb\u5ea6\u6761\u5f00\u59cb\u5f80\u540e\u64ad\u653e\uff0c\u8bf4\u660e\u4e00\u5207\u5de5\u4f5c\u5df2\u7ecf\u5c31\u7eea\uff0c\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u6253\u5f00 Chromium \u6109\u5feb\u7684\u73a9\u800d\u5566 XD<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5728\u7814\u7a76 WebRTC\uff0c\u4f46\u7531\u4e8e\u672c\u5730\u73af\u5883\u4e0d\u5177\u6709 Camara \u548c Microphone\uff0c\u6d4b\u8bd5\u5c31\u53d8\u5f97\u4e0d\u662f\u5f88\u65b9\u4fbf\u3002 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/himmel.tech\/wp\/?p=532\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201c\u4e3a Headless Linux \u5b89\u88c5 Virtual Camera + Microphone\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-532","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p83CFH-8A","_links":{"self":[{"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/posts\/532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=532"}],"version-history":[{"count":8,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":544,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions\/544"}],"wp:attachment":[{"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/himmel.tech\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}