{"id":355675,"date":"2021-02-23T21:19:05","date_gmt":"2021-02-23T13:19:05","guid":{"rendered":"http:\/\/4563.org\/?p=355675"},"modified":"2021-02-23T21:19:05","modified_gmt":"2021-02-23T13:19:05","slug":"ffmpeg-%e6%8a%80%e8%83%bd%e5%ad%a6%e4%b9%a0%e7%96%91%e9%97%ae_%e8%a7%86%e9%a2%91%e7%bc%a9%e6%94%be","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=355675","title":{"rendered":"FFmpeg \u6280\u80fd\u5b66\u4e60\u7591\u95ee_\u89c6\u9891\u7f29\u653e"},"content":{"rendered":"
\n
\n
\n

FFmpeg \u6280\u80fd\u5b66\u4e60\u7591\u95ee_\u89c6\u9891\u7f29\u653e <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : q770787217 <\/span> <\/i> 1<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
FFmpeg \u6280\u80fd\u5b66\u4e60\u7591\u95ee_\u89c6\u9891\u7f29\u653e
\u539f\u89c6\u9891 1.MP4 \u5206\u8fa8\u7387 540×960
\u9700\u8981 640X480
\u89e3\u51b3 1
ffmpeg -i 1.mp4 -vf “scale=540:960,pad=1280:960:370:0:black” output.mp4
ffmpeg -i output.mp4 -vf scale=640:-1 output_01.mp4
\u95ee\u9898\u9ebb\u70e6 \u5148\u8981\u653e\u5927 \u518d\u7f29\u5c0f \u4e0d\u80fd\u4e00\u6b65\u5230\u4f4d<\/p>\n

ffmpeg -i 1.mp4 -vf “scale=540:960,pad=640:480:50:0:black” output00.mp4
\u51fa\u9519 <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (2<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AX5N <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u5230\u5e95\u8981\u5e72\u561b\uff0c\u628a\u4e00\u4e2a 9:16 \u7684\u89c6\u9891\u6539\u6210 4:3 \uff1f<\/p>\n

    > ffmpeg -i a.mp4 -vf scale=640×480,setdar=4:3 output.mp4 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ungrown <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    #1 \u662f\u8bbe\u5b9a\u663e\u793a\u5bbd\u9ad8\u6bd4\u6765\u5f3a\u5236\u538b\u7f29\u597d\u7684\u89c6\u9891\u5728\u88ab\u64ad\u653e\u5668\u56de\u653e\u65f6\u62c9\u4f38\u4e3a 4\uff1a3\uff0c\u4f46\u9274\u4e8e\u6e90\u89c6\u9891\u662f\u4e2a\u7ad6\u5c4f\uff0c\u6211\u6ca1\u7406\u89e3\u9519\u7684\u8bdd\u8fd9\u4e48\u641e\u662f\u8981\u4e25\u91cd\u53d8\u5f62\u7684\uff08\u77ee\u80d6\uff09<\/p>\n

    \u6211\u4e2a\u4eba\u4e0d\u5efa\u8bae\u4fee\u6539 PAR SAR DAR \u8fd9\u4e9b\u6d89\u53ca\u753b\u9762\u6bd4\u4f8b\u7684\u4e1c\u897f\uff0c\u603b\u89c9\u5f97\u5bb9\u6613\u4e0d\u5c0f\u5fc3\u9a97\u5230\u522b\u4eba\u6d3b\u7740\u88ab\u522b\u4eba\u9a97\uff0c\u540e\u7eed\u8f6c\u7801\u4e5f\u53ef\u80fd\u91c7\u5751\uff0c\u603b\u4e4b\u9664\u975e\u522b\u65e0\u4ed6\u6cd5\uff0c\u5426\u5219\u6211\u4e0d\u559c\u6b22\u6539\u52a8\u8fd9\u4e9b\u4e1c\u897f<\/p>\n

    \u4e3b\u7684\u4ee3\u7801\u770b\u8d77\u6765\u662f\u60f3\u628a\u4e00\u4e2a\u7ad6\u5c4f\u6e90\u7f29\u5c0f\u653e\u5230\u4e00\u4e2a 640×480 \u7684\u753b\u9762\u91cc\uff0c\u4e24\u4fa7\u52a0\u9ed1\u8fb9\u3002\u5176\u5b9e\u4f60\u7684\u547d\u4ee4\u5c31\u4ec5\u4ec5\u53ea\u5dee\u4e00\u4e2a\u53c2\u6570\u3002\u4e0b\u9762\u8fd9\u4e2a\u53c2\u6570\u662f\u6211\u5e73\u65f6\u5c06\u56fe\u7247\u5e8f\u5217\u538b\u6210\u89c6\u9891\u7528\u5230\u7684\uff1a<\/p>\n

    scale={width}:{height}:force_original_aspect_ratio=1,pad={width}:{height}:(ow-iw)\/2:(oh-ih)\/2<\/p>\n

    {width}\u548c{height}\u8fd9\u4e24\u4e2a\u662f\u53d8\u91cf\uff0c\u662f\u6700\u7ec8\u8f93\u51fa\u7684\u5bbd\u548c\u957f\u3002\u4e0a\u9762\u90a3\u4e00\u4e32\u91cc\u4e5f\u53ea\u6709\u8fd9\u4e24\u4e2a\u662f\u53d8\u91cf\uff0cow iw oh ih \u90fd\u662f ffmpeg \u5185\u90e8\u7684\u8fd0\u884c\u65f6\u53d8\u91cf\u540d\u79f0\uff0c\u5206\u522b\u8868\u793a\u8f93\u51fa\u548c\u8f93\u5165\u7684\u5bbd\u548c\u957f\uff0c\u8fd9\u6837\u6307\u5b9a pad \u5c31\u4e0d\u7528\u81ea\u5df1\u6839\u636e\u5177\u4f53\u7684\u6570\u503c\u6765\u8ba1\u7b97\u4e86\uff0c\u5f53\u7136\u8fd9\u6837\u662f\u628a\u6e90\u89c6\u9891\u5185\u5207\u4e8e\u8f93\u51fa\u753b\u9762\u4e2d\u5e76\u4e14\u5c45\u4e2d\u7684\uff08\u4e00\u822c\u90fd\u662f\u8981\u8fd9\u6837\u7684\u6548\u679c\u561b\uff09 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    FFmpeg \u6280\u80fd\u5b66\u4e60\u7591\u95ee_\u89c6\u9891\u7f29…<\/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\/355675"}],"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=355675"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/355675\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=355675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=355675"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=355675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}