{"id":112277,"date":"2020-02-13T06:55:10","date_gmt":"2020-02-12T22:55:10","guid":{"rendered":"http:\/\/4563.org\/?p=112277"},"modified":"2020-02-13T06:55:10","modified_gmt":"2020-02-12T22:55:10","slug":"%e6%b1%82%e5%8a%a9%e4%b8%80%e4%b8%aa-ffmpeg-ffplay-%e7%9a%84%e8%b0%83%e7%94%a8%e6%96%b9%e6%b3%95%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=112277","title":{"rendered":"\u6c42\u52a9\u4e00\u4e2a ffmpeg \/ ffplay \u7684\u8c03\u7528\u65b9\u6cd5\u95ee\u9898"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u6c42\u52a9\u4e00\u4e2a ffmpeg \/ ffplay \u7684\u8c03\u7528\u65b9\u6cd5\u95ee\u9898               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : feng32 <\/span>  <span><i><\/i> 60<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>Linux \u4e0b\u6293\u53d6 USB \u6444\u50cf\u5934\u81f3\u6587\u4ef6\u7684\u6307\u4ee4\u5982\u4e0b:<\/p>\n<pre><code>ffmpeg -f v4l2 -video_size 1280x720 -i \/dev\/video2 camera.mp4 <\/code><\/pre>\n<p>\u6293\u53d6 USB \u6444\u50cf\u5934\u5e76\u5b9e\u65f6\u663e\u793a\u7684\u6307\u4ee4\u5982\u4e0b:<\/p>\n<pre><code>ffplay -f v4l2 -video_size 1280x720 -i \/dev\/video2 <\/code><\/pre>\n<p>\u5c06\u7eff\u5e55\u4e0a\u7684\u4eba\u7269\u53e0\u52a0\u5230\u53e6\u4e00\u4e2a\u89c6\u9891\u4e0a\uff0c\u5e76\u4fdd\u5b58\u4e3a\u6587\u4ef6\u7684\u6307\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre><code>ffmpeg -i bg.mp4 -i fg.mp4 -shortest -filter_complex \"[1:v]chromakey=0x4a5b74:0.1:0.2[ckout];[0:v][ckout]overlay[out]\" -map \"[out]\" out.mp4 <\/code><\/pre>\n<p>(\u4ee5\u4e0a\u4e09\u4e2a\u6307\u4ee4\u90fd\u5df2\u7ecf\u6d4b\u8bd5\u6210\u529f)<\/p>\n<p>\u73b0\u5728\u5982\u679c\u8981\u628a USB \u6444\u50cf\u5934\u524d\u3001\u7eff\u5e55\u524d\u7684\u4eba\u7269\u53e0\u52a0\u5230\u53e6\u4e00\u4e2a\u89c6\u9891\u4e0a\u5e76\u5b9e\u65f6\u64ad\u653e\uff0c\u8981\u5982\u4f55\u5b9e\u73b0\u5462\uff1f<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>3<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"260987\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : jakezh <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"260988\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : SmiteChow <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             |\u672a\u6d4b\u8bd5\uff1a`ffplay -f v4l2 -video_size 1280&#215;720 &lt; ffmpeg -i bg.mp4 -i \/dev\/video2 -shortest -filter_complex &#8220;[1:v]chromakey=0x4a5b74:0.1:0.2[ckout];[0:v][ckout]overlay[out]&#8221; -map &#8220;[out]&#8221; `                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"260989\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : feng32 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e0a\u4e24\u4f4d\u7684\u601d\u60f3\u662f\u5bf9\u7684\uff0c\u5b9e\u9645\u5de5\u4f5c\u7684\u6307\u4ee4\u5982\u4e0b<\/p>\n<p>ffmpeg -i bg.mp4 -i \/dev\/video2 -shortest -filter_complex &#8220;[1:v]chromakey=0x4a5b74:0.1:0.2[ckout];[0:v][ckout]overlay[out]&#8221; -map &#8220;[out]&#8221; -f matroska &#8211; | ffplay &#8211;                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u6c42\u52a9\u4e00\u4e2a ffmpeg \/ ffp&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/112277"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=112277"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/112277\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=112277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=112277"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=112277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}