{"id":500,"date":"2024-08-12T17:30:56","date_gmt":"2024-08-12T09:30:56","guid":{"rendered":"https:\/\/thereisno.top:4430\/?p=500"},"modified":"2024-08-12T17:30:57","modified_gmt":"2024-08-12T09:30:57","slug":"ffmpeg%e7%9a%84%e7%ae%80%e5%8d%95%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/thereisno.top\/?p=500","title":{"rendered":"ffmpeg\u7684\u7b80\u5355\u4f7f\u7528\u65b9\u6cd5"},"content":{"rendered":"\n<p><strong>\u8f6c\u7801\u548c\u7f16\u8f91\u89c6\u9891<\/strong><\/p>\n\n\n\n<p>\u4eca\u5929\u7528Android Studio\uff08\u540e\u9762\u7b80\u79f0AS\uff09\u91cc\u7684\u6a21\u62df\u5668\u7ed9\u7cfb\u7edf\u5f55\u5c4f\uff0c\u7528\u6765\u5c55\u793aOpenGL\u53ef\u89c6\u5316\u7684\u4e1c\u897f\uff0c\u6253\u7b97\u4e0a\u4f20B\u7ad9\uff0c\u540e\u6765\u53d1\u73b0AS\u53ea\u80fd\u4fdd\u5b58webm\u683c\u5f0f\u548cGIF\u683c\u5f0f\u7684\u89c6\u9891\uff0c\u5e76\u4e14\u6587\u4ef6\u4f53\u79ef\u5de8\u5927\uff0c\u89c6\u9891\u56fe\u50cf\u4e5f\u662f\u987a\u65f6\u9488\u65cb\u8f6c\u7684\u3002<\/p>\n\n\n\n<p>\u6ca1\u529e\u6cd5\uff0c\u53ea\u80fd\u627e\u4e2a\u89c6\u9891\u7f16\u8f91\u5668\u8fdb\u884c\u8f6c\u7801\u548c\u7f16\u8f91\uff0c\u7ed3\u679c\u53d1\u73b0\u7f51\u4e0a\u7684\u89c6\u9891\u8f6c\u7801\u5de5\u5177\u57fa\u672c\u7c97\u5236\u6ee5\u9020\uff0c\u50cfAdobe PR\u8fd9\u6837\u7684\u89c6\u9891\u526a\u8f91\u8f6f\u4ef6\u6211\u4e5f\u6ca1\u5fc5\u8981\u4e0b\u8f7d\uff0c\u4e8e\u662f\u627e\u5230\u4e86ffmpeg\uff08\u5176\u5b9e\u5f88\u65e9\u4e4b\u524d\u5728\u6811\u8393\u6d3e\u4e0a\u73a9Linux\u7684\u65f6\u5019\u7528\u8fc7\uff09\u3002<\/p>\n\n\n\n<p>\u6211\u8fdb\u5165<a href=\"http:\/\/ffmpeg.org\/\">ffmpeg\u5b98\u7f51<\/a>\u4e0b\u8f7d\u4e86Win64\u7248\u672c\uff0c\u4e0b\u8f7d\u901f\u5ea6\u5f88\u5feb\uff0c\u4e0b\u8f7d\u4e0b\u6765\u5c31\u662f\u4e00\u4e2a\u538b\u7f29\u5305\uff0c\u89e3\u538b\u540e\u5c31\u662f\u5de5\u5177\u672c\u4f53\u4e86\uff0c\u4e0d\u8fc7\u5b83\u6ca1\u6709\u4efb\u4f55UI\u754c\u9762\uff0c\u5728Windows\u4e0b\u4f60\u53ea\u80fd\u8fdb\u5165bin\u76ee\u5f55\uff0c\u7136\u540eShift+\u9f20\u6807\u53f3\u952e\u6253\u5f00\u547d\u4ee4\u7a97\u53e3\uff0c\u4f7f\u7528ffmpeg\u7684\u6307\u4ee4\u8fdb\u884c\u64cd\u4f5c\u3002\u5982\u4e0b\u56fe\uff0c\u53ef\u4ee5\u770b\u5230\u8f6c\u7801\u6548\u7387\u5f88\u9ad8\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u5206\u6790\u7f51\u4e0a\u641c\u96c6\u7684ffmpeg\u7b80\u5355\u7528\u6cd5\uff0c\u53ef\u4ee5\u8fdb\u884c\u5f88\u591a\u57fa\u7840\u7684\u89c6\u9891\u7f16\u8f91\u3002<\/p>\n\n\n\n<p><strong>ffmpeg<\/strong><strong>\u7684\u7b80\u5355\u7528\u6cd5<\/strong><\/p>\n\n\n\n<p><strong>\u8f6c\u7801<\/strong><\/p>\n\n\n\n<p>\u6700\u7b80\u5355\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>ffmpeg -i out.ogv -vcodec h264 out.mp4<br>ffmpeg -i out.ogv -vcodec mpeg4 out.mp4<br>ffmpeg -i out.ogv -vcodec libxvid out.mp4<br>ffmpeg -i out.mp4 -vcodec wmv1 out.wmv<br>ffmpeg -i out.mp4 -vcodec wmv2 out.wmv<\/p>\n\n\n\n<p>-i \u540e\u9762\u662f\u8f93\u5165\u6587\u4ef6\u540d\u3002-vcodec \u540e\u9762\u662f\u7f16\u7801\u683c\u5f0f\uff0ch264 \u6700\u4f73\uff0c\u4f46 Windows \u7cfb\u7edf\u9ed8\u8ba4\u4e0d\u5b89\u88c5\u3002\u5982\u679c\u662f\u8981\u63d2\u5165 ppt \u7684\u89c6\u9891\uff0c\u9009\u62e9 wmv1 \u6216 wmv2 \u57fa\u672c\u4e0a\u4e07\u65e0\u4e00\u5931\u3002<\/p>\n\n\n\n<p>\u9644\u52a0\u9009\u9879\uff1a-r \u6307\u5b9a\u5e27\u7387\uff0c-s \u6307\u5b9a\u5206\u8fa8\u7387\uff0c-b \u6307\u5b9a\u6bd4\u7279\u7387\uff1b\u4e8e\u6b64\u540c\u65f6\u53ef\u4ee5\u5bf9\u58f0\u9053\u8fdb\u884c\u8f6c\u7801\uff0c-acodec \u6307\u5b9a\u97f3\u9891\u7f16\u7801\uff0c-ab \u6307\u5b9a\u97f3\u9891\u6bd4\u7279\u7387\uff0c-ac \u6307\u5b9a\u58f0\u9053\u6570\uff0c\u4f8b\u5982<\/p>\n\n\n\n<p>ffmpeg -i out.ogv -s 640&#215;480 -b 500k -vcodec h264 -r 29.97 -acodec libfaac -ab 48k -ac 2 out.mp4<\/p>\n\n\n\n<p>ffmpeg -i 0001-0215.mkv -s 1920&#215;1080 -b 1100k -vcodec h264 -r 60&nbsp; out.mp4<\/p>\n\n\n\n<p>ffmpeg -i 0001-0150.mkv -vcodec h264 -b:v 0&nbsp; out5.mp4<\/p>\n\n\n\n<p><strong>\u526a\u5207<\/strong><\/p>\n\n\n\n<p>\u7528 -ss \u548c -t \u9009\u9879\uff0c \u4ece\u7b2c 30 \u79d2\u5f00\u59cb\uff0c\u5411\u540e\u622a\u53d6 10 \u79d2\u7684\u89c6\u9891\uff0c\u5e76\u4fdd\u5b58\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input.wmv -ss 00:00:30.0 -c copy -t 00:00:10.0 output.wmv<br>ffmpeg -i input.wmv -ss 30 -c copy -t 10 output.wmv<\/p>\n\n\n\n<p>\u8fbe\u6210\u76f8\u540c\u6548\u679c\uff0c\u4e5f\u53ef\u4ee5\u7528 -ss \u548c -to \u9009\u9879\uff0c \u4ece\u7b2c 30 \u79d2\u622a\u53d6\u5230\u7b2c 40 \u79d2\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input.wmv -ss 30 -c copy -to 40 output.wmv<\/p>\n\n\n\n<p>\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cffmpeg \u4e3a\u4e86\u52a0\u901f\uff0c\u4f1a\u4f7f\u7528\u5173\u952e\u5e27\u6280\u672f\uff0c \u6240\u4ee5\u6709\u65f6\u526a\u5207\u51fa\u6765\u7684\u7ed3\u679c\u5728\u8d77\u6b62\u65f6\u95f4\u4e0a\u672a\u5fc5\u51c6\u786e\u3002 \u901a\u5e38\u6765\u8bf4\uff0c\u628a -ss \u9009\u9879\u653e\u5728 -i \u4e4b\u524d\uff0c\u4f1a\u4f7f\u7528\u5173\u952e\u5e27\u6280\u672f\uff1b \u628a -ss \u9009\u9879\u653e\u5728 -i \u4e4b\u540e\uff0c\u5219\u4e0d\u4f7f\u7528\u5173\u952e\u5e27\u6280\u672f\u3002 \u5982\u679c\u8981\u4f7f\u7528\u5173\u952e\u5e27\u6280\u672f\u53c8\u8981\u4fdd\u7559\u65f6\u95f4\u6233\uff0c\u53ef\u4ee5\u52a0\u4e0a -copyts \u9009\u9879\uff1a<\/p>\n\n\n\n<p>ffmpeg -ss 00:01:00 -i video.mp4 -to 00:02:00 -c copy -copyts cut.mp4<\/p>\n\n\n\n<p><strong>\u5408\u5e76<\/strong><\/p>\n\n\n\n<p>\u628a\u4e24\u4e2a\u89c6\u9891\u6587\u4ef6\u5408\u5e76\u6210\u4e00\u4e2a\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u5730\u4f7f\u7528 concat demuxer\uff0c\u793a\u4f8b\uff1a<\/p>\n\n\n\n<p>$ cat mylist.txt<br>file &#8216;\/path\/to\/file1&#8217;file &#8216;\/path\/to\/file2&#8217;file &#8216;\/path\/to\/file3&#8217;$ ffmpeg -f concat -i mylist.txt -c copy output<\/p>\n\n\n\n<p>\u66f4\u591a\u65f6\u5019\uff0c\u7531\u4e8e\u8f93\u5165\u6587\u4ef6\u7684\u591a\u6837\u6027\uff0c\u9700\u8981\u8f6c\u6210\u4e2d\u95f4\u683c\u5f0f\u518d\u5408\u6210\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input1.avi -qscale:v 1 intermediate1.mpg<br>ffmpeg -i input2.avi -qscale:v 1 intermediate2.mpg<br>cat intermediate1.mpg intermediate2.mpg &gt; intermediate_all.mpg<br>ffmpeg -i intermediate_all.mpg -qscale:v 2 output.avi<\/p>\n\n\n\n<p><strong>\u8c03\u6574\u64ad\u653e\u901f\u5ea6<\/strong><\/p>\n\n\n\n<p>\u52a0\u901f\u56db\u500d\uff1a<\/p>\n\n\n\n<p>ffmpeg -i TheOrigin.mp4 -vf&nbsp; &#8220;setpts=0.25*PTS&#8221; UpTheOrigin.mp4<\/p>\n\n\n\n<p>\u56db\u500d\u6162\u901f\uff1a<\/p>\n\n\n\n<p>ffmpeg -i TheOrigin.mp4 -vf &#8220;setpts=4*PTS&#8221; DownTheOrigin.mp4<\/p>\n\n\n\n<p><strong>\u5e27\u7387\u8bbe\u7f6e<\/strong><\/p>\n\n\n\n<p>\u4f7f\u7528-r\u9009\u9879<\/p>\n\n\n\n<p>\u8bed\u6cd5\u662f\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input -r fps output<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input.avi -r 30 output.mp4<\/p>\n\n\n\n<p><strong>\u4f7f\u7528<\/strong><strong>fps filter<\/strong><\/p>\n\n\n\n<p>\u53e6\u4e00\u4e2a\u8bbe\u7f6e\u5e27\u7387\u662f\u7528fps filter\uff0c\u7279\u522b\u662f\u5728filterchains\u4f7f\u7528\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a\u4fee\u6539\u8f93\u5165\u6587\u4ef6\u7684\u5e27\u7387\u523025<\/p>\n\n\n\n<p>ffmpeg -v clip.mpg -vf fps=fps=25 clip.webm<\/p>\n\n\n\n<p><strong>\u6bd4\u7279\u7387\u8bbe\u7f6e<\/strong><\/p>\n\n\n\n<p>\u6bd4\u7279\u7387\u4e5f\u662f\u4e00\u4e2a\u51b3\u5b9a\u97f3\u89c6\u9891\u603b\u4f53\u8d28\u91cf\u7684\u53c2\u6570\u3002\u4ed6\u51b3\u5b9a\u6bcf\u4e2a\u65f6\u95f4\u5355\u4f4d\u5904\u7406\u7684bit\u6570\u3002<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u6bd4\u7279\u7387\uff1a<\/p>\n\n\n\n<p>\u6bd4\u7279\u7387\u51b3\u5b9a\u5904\u74061s\u7684\u7f16\u7801\u6d41\u9700\u8981\u591a\u5c11bits\uff0c\u8bbe\u7f6e\u7528-b\u9009\u9879\u3002\u533a\u5206\u97f3\u89c6\u9891\u7528-b:a\u548c-b:v<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a\u8bbe\u7f6e\u6574\u4f531.5Mbit\u6bcf\u79d2<\/p>\n\n\n\n<p>ffmpeg -i file.avi -b 1.5M file.mp4<\/p>\n\n\n\n<p>ffmpeg -i input.avi -b:v 1500K output.mp4<\/p>\n\n\n\n<p><strong>CBR<\/strong><strong>\u8bbe\u7f6e<\/strong><\/p>\n\n\n\n<p>CBR\u8bbe\u7f6e\u4e00\u822c\u7528\u4f5c\u76f4\u64ad\u6d41\uff0c\u6bd4\u5982\u89c6\u9891\u4f1a\u8bae\u3002\u4e3a\u8f93\u51fa\u8bbe\u7f6eCBR,\u6709\u4e09\u4e2a\u53c2\u6570\u5fc5\u987b\u8bbe\u7f6e\u4e3a\u540c\u4e00\u4e2a\u503c\u3002<\/p>\n\n\n\n<p>bitrate(-b option), minimal rate(-minrate), maximal rate(-maxrate)\u3002maximal rate\u9700\u8981\u8bbe\u7f6e-bufsize\u9009\u9879\u3002\u4f8b\u5982\u8bbe\u7f6eCBR\u4e3a0.5Mbit\/s\u3002<\/p>\n\n\n\n<p>ffmpeg -i in.avi -b 0.5M -minrate 0.5M -maxrate 0.5M -bufsize 1M output.mkv<\/p>\n\n\n\n<p><strong>\u8bbe\u7f6e\u8f93\u51fa\u6587\u4ef6\u7684\u6700\u5927<\/strong><strong>size<\/strong><\/p>\n\n\n\n<p>\u7528-fs\u9009\u9879\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\u8bbe\u7f6e\u8f93\u51fa\u6587\u4ef6\u7684\u6700\u5927\u7684size\u4e3a10M<\/p>\n\n\n\n<p>ffmpeg -i input.avi -fs 10MB output.mp4<\/p>\n\n\n\n<p><strong>\u6587\u4ef6\u5927\u5c0f\u8ba1\u7b97<\/strong><\/p>\n\n\n\n<p>\u6587\u4ef6\u7684\u5927\u5c0f\u662f\u662f\u97f3\u89c6\u9891\u6d41\u5927\u5c0f\u7684\u548c\u3002<\/p>\n\n\n\n<p>\u89c6\u9891\u6d41\u7684\u5927\u5c0f\u7684\u65b9\u7a0b\u5f0f\u662f(\u9664\u4ee58\u662f\u7531bits\u5230bytes\u7684\u8f6c\u6362):<\/p>\n\n\n\n<p>video_size = video_bitrate * time_in_seconds \/ 8;<\/p>\n\n\n\n<p>\u5982\u679c\u97f3\u9891\u662f\u89e3\u538b\u7f29\u7684\uff0c\u8ba1\u7b97\u516c\u5f0f\u662f\uff1a<\/p>\n\n\n\n<p>audio_size = smpaling_rate * bit_depth * channels * time_in_second \/ 8;<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a\u8ba1\u7b9710\u5206\u949f\u7684\u89c6\u9891\uff0c 1500kbits\/s \u89c6\u9891\u6bd4\u7279\u7387\u548c 128kbits\/s\u7684\u97f3\u9891\u6bd4\u7279\u7387\uff0c\u7528\u4e0b\u9762\u7684\u8ba1\u7b97\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p>file_size = video_size + audio_size;<br>file_size = (video_bitrate + audio_bitrate) * time_in_seconds \/ 8;<br>file_size = (1500 kbits\/s + 128kbits\/s) * 600s<br>file_size = 1628kbits\/s * 600s<br>file_size = 976800kb = 976800000 b \/ 8 = 122100000 B \/ 1024 = 119238.28125KB<br>file_size = 119238.28125 KB \/ 1024 = 116.443634033203125MB = 116.44M<\/p>\n\n\n\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;<\/p>\n\n\n\n<p>\u597d\uff0c\u5982\u679c\u4f60\u73b0\u5728\u5f88\u7740\u6025\u5c06AV1\u8f6c\u6362\u4e3aMP4\uff0c\u90a3\u4e48\u53ea\u8981\u8fd0\u884c\u4e0b\u9762\u8fd9\u884cFFmpeg\u547d\u4ee4\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u5bf9\u5927\u90e8\u5206\u7528\u4f8b\u90fd\u6709\u6548\u3002<\/p>\n\n\n\n<p>ffmpeg -i input_filename.avi -c:v copy -c:a copy -y output_filename.mp4<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u5728\u8be5\u547d\u4ee4\u884c\u4e2d\uff0c\u4f60\u63d0\u4f9b\u4e86\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AVI\u89c6\u9891\u4f5c\u4e3a\u8f93\u5165<\/li>\n\n\n\n<li>\u660e\u786e\u8f93\u51faMP4\u7684\u6587\u4ef6\u540d<\/li>\n\n\n\n<li>\u8ba9FFmpeg\u76f4\u63a5\u5c06\u89c6\u9891\u548c\u97f3\u9891\uff08\u547d\u4ee4\u4e3a\uff1a-c:v copy -c:a copy\uff09\u4eceAVI<a href=\"https:\/\/cloud.tencent.com\/product\/tke?from_column=20421&amp;from=20421\">\u5bb9\u5668<\/a>\u683c\u5f0f\u590d\u5236\u5230MP4\u5bb9\u5668\u683c\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u6211\u5047\u8bbe\u4f60\u624b\u4e0a\u5df2\u7ecf\u6709\u4e86\u60f3\u8981\u8f6c\u6362\u683c\u5f0f\u7684AVI\u6587\u4ef6\u3002\u5982\u679c\u6ca1\u6709\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u5728\u7f51\u4e0a\u641c\u7d22\u201cavi video samples\u201d\u83b7\u53d6\uff0c\u6216\u8005\u5728\u8fd9\u91cc\u4e0b\u8f7d\uff08\u8fd9\u662f\u6211\u5728FFmpeg\u7cfb\u5217\u6587\u7ae0\u4e2d\u5c06\u7528\u5230\u7684\uff09\uff1ahttps:\/\/file-examples-com.github.io\/uploads\/2018\/04\/file_example_AVI_1280_1_5MG.avi<\/p>\n\n\n\n<p><strong>\u4ec0\u4e48\u662fCodecs\u548cFormats\uff1f<\/strong><\/p>\n\n\n\n<p>\u4f60\u9700\u8981\u77e5\u9053\u7684\u6700\u91cd\u8981\u7684\u4e8b\u5c31\u662fFormats\u548cCodecs\u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n\n\n\n<p>\u7b80\u5355\u6765\u8bf4\uff0c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f16\u89e3\u7801\u5668\uff08Codecs\uff09<\/strong>\u83b7\u53d6\u539f\u59cb\u97f3\u9891\u548c\u89c6\u9891\u540e\u8fdb\u884c\u538b\u7f29\uff0c\u538b\u7f29\u5230\u4e00\u4e2a\u5408\u7406\u7684\u7a7a\u95f4\u5927\u5c0f\u3002\u8fd9\u79cd\u538b\u7f29\u662f\u5728\u8003\u8651\u97f3\u9891\u548c\u89c6\u9891\u8d28\u91cf\u7684\u524d\u63d0\u4e0b\u5b8c\u6210\u7684\u3002\u66f4\u591a\u5173\u4e8e\u89c6\u9891\u538b\u7f29\u7684\u4ecb\u7ecd\uff0c\u8bf7\u9605\u8bfb\uff1a<a href=\"https:\/\/cloud.tencent.com\/developer\/tools\/blog-entry?target=http:\/\/mp.weixin.qq.com\/s?__biz=MzU1NTEzOTM5Mw==&amp;mid=2247515283&amp;idx=1&amp;sn=1f6ac100ad020fb8e8238aefa5e89d19&amp;chksm=fbda14bdccad9dabe8dfe7e90401acb04d906c56805c76f72fab242b763efd6aca70b4884e07&amp;scene=21#wechat_redirect\">\u89c6\u9891\u7f16\u7801\u5b8c\u5168\u6307\u5357<\/a>\u3002<\/li>\n\n\n\n<li>\u97f3\u9891\u548c\u89c6\u9891\u538b\u7f29\u8fc7\u7a0b\u7684\u8f93\u51fa\u88ab<strong>\u6253\u5305<\/strong>\u8fdb\u4e00\u4e2a\u88ab\u79f0\u4e3a<strong>\u5bb9\u5668\uff08Formats\uff09<\/strong>\u7684\u683c\u5f0f\u4e2d\uff0c\u800c\u6253\u5f00\u5bb9\u5668\u4ee5\u53ca\u8bfb\u53d6\u97f3\u9891\u548c\u89c6\u9891\u7684\u65b9\u5f0f\u4e5f\u6709\u660e\u786e\u7684\u89c4\u5219\u548c\u6307\u5357\u3002\u5bb9\u5668\u6709\u4e0d\u540c\u7684\u683c\u5f0f\uff0c\u5982 MP4\u3001AVI\u3001WebM\u3001MKV\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5f53FFmpeg\u8f6c\u6362\u683c\u5f0f\u65f6\u53d1\u751f\u4e86\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p>\u5f53\u4f60\u5c06AVI\u6587\u4ef6\u4ea4\u7ed9FFmpeg\u5e76\u544a\u8bc9\u5b83\u751f\u6210\u4e00\u4e2a\u4e0d\u5e26\u4efb\u4f55\u53c2\u6570\u7684MP4\u6587\u4ef6\uff0c\u5b83\u5c06\u89e3\u590d\u7528\u8f93\u5165\u6587\u4ef6\uff0c\u63d0\u53d6\u539f\u59cb\u89c6\u9891\u8fdb\u884c<strong>\u91cd\u65b0\u7f16\u7801<\/strong>\uff0c\u7136\u540e\u5c06\u5b83\u653e\u5165MP4\u5bb9\u5668\u683c\u5f0f\u4e2d\uff0c\u6700\u540e\u8fd4\u8fd8\u7ed9\u4f60\u8f93\u51fa\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u5173\u952e\u70b9\u662f\uff1a<strong>\u9664\u975e\u4f60\u544a\u77e5FFmpeg\u4e0d\u8981\u91cd\u65b0\u7f16\u7801\uff0c\u5426\u5219\u5b83\u5c06\u91cd\u65b0\u7f16\u7801\u5185\u5bb9\u3002<\/strong>\u65e0\u8bba\u5982\u4f55\u4e00\u5b9a\u8981\u8bb0\u4f4f\u8fd9\u4e00\u70b9\uff01\u91cd\u65b0\u7f16\u7801\u662f\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e5f\u662f\u5728\u6587\u7ae0\u5f00\u5934\u6211\u4eec\u6307\u793aFFmpeg\u53ea\u590d\u5236\u97f3\u9891\u548c\u89c6\u9891\u7684\u539f\u56e0\u3002<\/p>\n\n\n\n<p><strong>\u73b0\u5728\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528FFmpeg\u901a\u8fc7\u91cd\u65b0\u7f16\u7801\u5c06AVI\u6587\u4ef6\u8f6c\u6362\u4e3aMP4\u3002<\/strong><\/p>\n\n\n\n<p>\u5728\u6b64\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u68c0\u67e5\u4e00\u4e0bAVI\u6587\u4ef6\uff0c\u7814\u7a76\u4e00\u4e0b\u5176\u4e2d\u7684\u53c2\u6570\u5982\u4f55\uff1f\u8981\u7814\u7a76\u53c2\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ffprobe \uff0c\u5b83\u662fFFmpeg\u5de5\u7a0b\u4e2d\u7684\u4e00\u4e2a\u5de5\u5177\uff0c\u5bf9\u4e8e\u5206\u6790\u89c6\u9891\u6587\u4ef6\u6765\u8bf4\u975e\u5e38\u6709\u7528\u3002&nbsp;<\/p>\n\n\n\n<p>\u8bf7\u8fd0\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff1a<\/p>\n\n\n\n<p>ffprobe -i file_example_AVI_1280_1_5MG.avi<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u7136\u540e\u4f60\u5f97\u5230\uff1a<\/p>\n\n\n\n<p>Input #0,avi,from&#8217;file_example_AVI_1280_1_5MG.avi&#8217;:Metadata:encoder&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :Lavf57.19.100Duration:00:00:30.61,start:0.000000,bitrate:387kb\/s&nbsp;&nbsp;&nbsp; Stream #0:0:Video:h264(High)(H264\/0x34363248),yuv420p(progressive),1280&#215;720 [SAR1:1DAR16:9],234kb\/s,30fps,30tbr,30tbn,60tbc&nbsp;&nbsp;&nbsp; Stream #0:1:Audio:aac(LC)([255][0][0][0]\/0x00FF),48000Hz,stereo,fltp,139kb\/s<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u6e05\u695a\u5730\u663e\u793a\u4e86\u4e24\u4e2a\u5a92\u4f53\u6d41\u2014\u2014\u89c6\u9891 #0:0 \u548c\u97f3\u9891 #0:1\u3002\u89c6\u9891\u5206\u8fa8\u7387\u662f1280&#215;720\u300130fps\uff0c\u89c6\u9891\u7f16\u7801\u65b9\u5f0f\u4e3aHigh Profile\u7684H.264\/AVC\uff0c\u5176\u7801\u7387\u4e3a234 kbps\u3002\u97f3\u9891\u4f7f\u7528aac \uff0c\u5176\u7801\u7387\u4e3a139 kbps\uff0c\u91c7\u6837\u7387\u4e3a48 KHz\u3002<\/p>\n\n\n\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u4f7f\u7528FFmpeg\u5c06AVI\u89c6\u9891\u8f6c\u6362\u4e3aMP4\uff0c\u4f46\u662f\u6211\u4eec\u8981\u4f7f\u7528VP9\u800c\u975eH.264\/AVC\u3002\u4e0b\u9762\u662f\u5b9e\u73b0\u8f6c\u6362\u7684\u547d\u4ee4\u884c\uff1a<\/p>\n\n\n\n<p>ffmpeg -i file_example_AVI_1280_1_5MG.avi -c:a copy -c:v vp9 -b:v 100K outputVP9.mp4<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u8fd9\u91cc\uff0c\u4f60\u7528FFmpeg\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528-c:a copy \u53c2\u6570\u539f\u6837\u590d\u5236\u97f3\u9891\uff08\u4e0d\u91cd\u65b0\u7f16\u7801\u97f3\u9891\uff09\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528VP9\u7f16\u7801\uff0c\u7801\u7387\u8bbe\u7f6e\u4e3a100kbps\uff08-c:v vp9 -b:v 100K \uff09\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\u540d\u4e3aoutputVP9.mp4\u7684MP4\u6587\u4ef6\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0b\u9762\u7684\u4ee3\u7801\u5c31\u662f\u8fd0\u884c\u4e0a\u8ff0\u547d\u4ee4\u65f6\u63a7\u5236\u53f0\u7684\u8f93\u51fa\uff1a<\/p>\n\n\n\n<p>Input #0,avi,from&#8217;file_example_AVI_1280_1_5MG.avi&#8217;:Metadata:encoder&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :Lavf57.19.100Duration:00:00:30.61,start:0.000000,bitrate:387kb\/s&nbsp;&nbsp;&nbsp; Stream #0:0:Video:h264(High)(H264\/0x34363248),yuv420p(progressive),1280&#215;720 [SAR1:1DAR16:9],234kb\/s,30fps,30tbr,30tbn,60tbc&nbsp;&nbsp;&nbsp; Stream #0:1:Audio:aac(LC)([255][0][0][0]\/0x00FF),48000Hz,stereo,fltp,139kb\/sStream mapping:Stream #0:0-&gt;#0:0(h264(native)-&gt;vp9(libvpx-vp9))Stream #0:1-&gt;#0:1(copy)Press [q]to stop,[?]forhelp[libvpx-vp9 @ 0x7f8fcb00f600]v1.8.2Output #0,mp4,to &#8216;outputVP9.mp4&#8217;:Metadata:encoder&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :Lavf58.45.100Stream #0:0:Video:vp9(libvpx-vp9)(vp09 \/0x39307076),yuv420p,1280&#215;720 [SAR1:1DAR16:9],q=-1&#8211;1,100kb\/s,30fps,15360tbn,30tbc&nbsp;&nbsp;&nbsp; Metadata:encoder&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :Lavc58.91.100libvpx-vp9&nbsp;&nbsp;&nbsp; Side data:cpb:bitrate max\/min\/avg:0\/0\/0buffer size:0vbv_delay:N\/AStream #0:1:Audio:aac(LC)(mp4a \/0x6134706D),48000Hz,stereo,fltp,139kb\/sframe=903fps=1.2q=0.0Lsize=959kB time=00:00:30.54bitrate=257.2kbits\/s dup=2drop=0speed=0.0414xvideo:421kB audio:521kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead:1.800530%<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u8ba4\u771f\u8bfb\u53d6\u63a7\u5236\u53f0\u8f93\u51fa\uff0c\u4f60\u5c31\u80fd\u53d1\u73b0FFmpeg\u4f7f\u7528\u4e86libvpx-vp9\u91cd\u65b0\u7f16\u7801\u4e86\u89c6\u9891\u6d41\uff0c\u7801\u7387\u662f100kbps\u3002<\/p>\n\n\n\n<p>\u50cf\u4ee5\u5f80\u4e00\u6837\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7ffprobe\u786e\u8ba4\u4e4b\u524dFFmpeg\u6210\u529f\u5730\u8f93\u51fa\u4e86MP4\uff0c\u5e76\u4e14\u4f7f\u7528\u7684\u89c6\u9891\u7f16\u7801\u662fVP9\u3002<\/p>\n\n\n\n<p>ffprobe -i outputVP9.mp4<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u63a7\u5236\u53f0\u8f93\u51fa\u53ef\u4ee5\u786e\u8ba4\uff1a\u4f7f\u7528VP9\u7f16\u7801\uff0c\u7801\u7387\u4e3a114 kbps\uff08\u63a5\u8fd1100kbps\uff09\u3002<\/p>\n\n\n\n<p>Input #0,mov,mp4,m4a,3gp,3g2,mj2,from&#8217;outputVP9.mp4&#8242;:Metadata:major_brand&nbsp;&nbsp;&nbsp;&nbsp; :isom&nbsp;&nbsp;&nbsp; minor_version&nbsp;&nbsp; :512compatible_brands:isomiso2mp41&nbsp;&nbsp;&nbsp; encoder&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :Lavf58.45.100Duration:00:00:30.57,start:0.000000,bitrate:257kb\/s&nbsp;&nbsp;&nbsp; Stream #0:0(und):Video:vp9(Profile 0)(vp09 \/0x39307076),yuv420p(tv,progressive),1280&#215;720,114kb\/s,SAR1:1DAR16:9,30fps,30tbr,15360tbn,15360tbc(default)Metadata:handler_name&nbsp;&nbsp;&nbsp; :VideoHandler&nbsp;&nbsp;&nbsp; Stream #0:1(und):Audio:aac(LC)(mp4a \/0x6134706D),48000Hz,stereo,fltp,137kb\/s(default)Metadata:handler_name&nbsp;&nbsp;&nbsp; :SoundHandler<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>major-brand\u662fisom\uff0c\u5b83\u544a\u8bc9\u6211\u4eec\u8be5\u6587\u4ef6\u7b26\u5408ISO\/IEC\u57fa\u7840\u5a92\u4f53\u683c\u5f0f\uff08ISO\/IEC 14496-12 \u2013 MPEG-4 Part 12\uff09\uff0c\u5373MP4\u3002<\/p>\n\n\n\n<p><strong>\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u91cd\u65b0\u7f16\u7801\u662f\u597d\u662f\u574f\uff1f<\/strong><\/p>\n\n\n\n<p>\u8fd9\u8981\u770b\u4f60\u662f\u60f3\u76f4\u63a5\u590d\u5236\u89c6\u9891\u5e76\u53ea\u6539\u53d8\u5bb9\u5668\u683c\u5f0f\uff08\u4eceAVI\u8f6c\u6362\u4e3aMP4\uff09\u8fd8\u662f\u786e\u5b9e\u60f3\u8981\u91cd\u65b0\u7f16\u7801\u89c6\u9891\u5e76\u66f4\u6539\u89c6\u9891\u8d28\u91cf\u3001\u5927\u5c0f\u7b49\u3002<\/p>\n\n\n\n<p><strong>\u5982\u679c\u6211\u4e0d\u91cd\u65b0\u7f16\u7801\uff08\u4eceAVI\u5230MP4\u7684\u65e0\u635f\u8f6c\u6362\uff09\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p>\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f60\u8981\u505a\u7684\u975e\u5e38\u7b80\u5355\uff01\u76f4\u63a5\u8fd0\u884c\u4e0b\u9762\u7684\u547d\u4ee4\u884c\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n<p>ffmpeg -i input_filename.avi -c:v copy -c:a copy -y output_filename.mp4<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u4f60\u5411FFmpeg \u4f20\u9012\u7684\u4fe1\u606f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AVI\u89c6\u9891\u662f\u8f93\u5165\u6587\u4ef6<\/li>\n\n\n\n<li>\u786e\u5b9a\u8f93\u51fa\u7684MP4\u7684\u6587\u4ef6\u540d<\/li>\n\n\n\n<li>\u544a\u77e5FFmpeg\u76f4\u63a5\u5c06\u89c6\u9891\u548c\u97f3\u9891\uff08\u547d\u4ee4\u4e3a\uff1a-c:v copy -c:a copy \uff09\u4eceAVI\u5bb9\u5668\u683c\u5f0f\u8f6c\u5230MP4\u5bb9\u5668\u683c\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u987a\u4fbf\u8bf4\u4e0b\uff0c\u4e0a\u9762\u7684\u64cd\u4f5c\u5728\u6211\u7684Mac\u4e0a\u53ea\u82b1\u4e860.3\u79d2\u3002\u8fd9\u662f\u56e0\u4e3aFFmpeg\u53ea\u662f\u590d\u5236AVI\u6587\u4ef6\u4e2d\u7684\u89c6\u9891\u548c\u97f3\u9891\uff0c\u5e76\u672a\u91cd\u65b0\u7f16\u7801\uff0c\u5e76\u5c06\u5b83\u4eec\u653e\u5165MP4\u5bb9\u5668\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u89c6\u9891\u5e76\u6ca1\u6709\u91cd\u65b0\u7f16\u7801\uff0c\u6240\u4ee5\u4f60\u53ef\u4ee5\u8ba4\u4e3a\u8fd9\u79cd\u4eceAVI\u5230MP4\u7684\u8f6c\u6362\u662f\u65e0\u635f\u8f6c\u6362\u3002\u7136\u800c\uff0c\u5982\u679c\u6211\u662f\u4f60\uff0c\u6211\u4f1a\u5728\u8ddd\u79bb\u6211\u4e09\u7c73\u4e4b\u5185\u7684\u89c6\u9891\u538b\u7f29\u5de5\u7a0b\u5e08\u9762\u524d\u8c28\u614e\u4f7f\u7528<strong>\u65e0\u635f\u89c6\u9891\u538b\u7f29<\/strong>\u8fd9\u4e2a\u8bcd\u3002\u8981\u662f\u4f60\u8fd9\u4e48\u505a\u4e86\uff0c\u8bf7\u4e00\u5b9a\u7ed9\u4ed6\u4e70\u676f\u5496\u5561\u6216\u8005\u963f\u53f8\u5339\u6797\u538b\u538b\u60ca \ud83d\ude42<\/p>\n\n\n\n<p><strong>\u5c31\u5230\u8fd9\u91cc\u4e86\uff0c\u73b0\u5728\u4f60\u5df2\u7ecf\u4e86\u89e3\u4e86\u5982\u4f55\u4f7f\u7528FFmpeg\u5c06AVI\u8f6c\u6362\u4e3aMP4\u3002\u5f88\u5bb9\u6613\uff0c\u5bf9\u4e0d\u5bf9\uff1f<\/strong><\/p>\n\n\n\n<p><strong>\u7ea2\u5229\uff1aFFmpeg\u5b89\u88c5\u6307\u5357<\/strong><\/p>\n\n\n\n<p><strong>1\u3001\u5982\u4f55\u5728Windows\u4e0a\u5b89\u88c5FFmpeg?<\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u4e0d\u662f\u7a0b\u5e8f\u5458\uff0c\u4e14\u65e0\u6cd5\u4f7f\u7528\u7f16\u7801\u5de5\u5177\uff0c\u90a3\u4e48\u5728Windows\u4e0a\u7f16\u8bd1\u548c\u5b89\u88c5FFmpeg\u5bf9\u4f60\u6765\u8bf4\u5c06\u662f\u4e00\u4e2a\u590d\u6742\u7684\u8fc7\u7a0b\u3002\u65e0\u8bba\u5982\u4f55\uff0c\u4f60\u90fd\u53ef\u4ee5\u524d\u5f80<em>OTTVerse\u2019s FFmpeg builds<\/em> \uff08<a href=\"https:\/\/ottverse.com\/ffmpeg-builds\/\uff09\u4e0b\u8f7d\u5df2\u7f16\u8bd1\u7684.exeFFmpeg\u6587\u4ef6\u4f7f\u7528\u3002\u6211\u5efa\u8bae\u4f60\u4e0b\u8f7d\u9759\u6001\u7248\u672c\uff08\u9664\u975e\u4f60\u6b63\u8ba1\u5212\u4f7f\u7528FFmpeg\u5f00\u53d1\u8f6f\u4ef6\u5e76\u9700\u8981\u5171\u4eab\u5e93\uff09\">https:\/\/ottverse.com\/ffmpeg-builds\/\uff09\u4e0b\u8f7d\u5df2\u7f16\u8bd1\u7684.exeFFmpeg\u6587\u4ef6\u4f7f\u7528\u3002\u6211\u5efa\u8bae\u4f60\u4e0b\u8f7d\u9759\u6001\u7248\u672c\uff08\u9664\u975e\u4f60\u6b63\u8ba1\u5212\u4f7f\u7528FFmpeg\u5f00\u53d1\u8f6f\u4ef6\u5e76\u9700\u8981\u5171\u4eab\u5e93\uff09<\/a>\u3002<\/p>\n\n\n\n<p><strong>2\u3001\u5982\u4f55\u5728MacOS\u5b89\u88c5FFmpeg\uff1f<\/strong><\/p>\n\n\n\n<p>\u5728Mac\u4e0a\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528brew\u6307\u4ee4\u5b89\u88c5FFmpeg\uff0cbrew\u662fMac\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u975e\u5e38\u597d\u7528\u7684\u5305\u7ba1\u7406\u5668\u3002\u4e0b\u9762\u662f\u5728Mac\u4e0a\u5b89\u88c5FFmpeg\u7684\u547d\u4ee4\u884c\uff08\u5728Cataline v 10.15.5\u4e0a\u6d4b\u8bd5\u548c\u4f7f\u7528\uff09\uff1a<\/p>\n\n\n\n<p>brew install ffmpeg<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p><strong>3\u3001\u5982\u4f55\u5728Ubuntu\u4e0a\u5b89\u88c5FFmpeg\uff1f<\/strong><\/p>\n\n\n\n<p>\u5728Ubuntu\u4e0a\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b89\u88c5 FFmpeg\uff1a\u4f7f\u7528apt\u5305\u7ba1\u7406\u5668\u6216\u4ece\u6e90\u4ee3\u7801\u7f16\u8bd1\u3002\u5982\u679c\u4f60\u60f3\u8981\u901a\u8fc7apt\u5feb\u901f\u5b89\u88c5FFmpeg\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\u884c\uff1a<\/p>\n\n\n\n<p>sudo apt install ffmpeg<\/p>\n\n\n\n<p>\u590d\u5236<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u60f3\u4ece\u6e90\u4ee3\u7801\u7f16\u8bd1FFmpeg\uff0c\u53ef\u4ee5\u4f7f\u7528 FFmpeg \u5b98\u65b9\u5b89\u88c5\u6307\u5357\u4e2d\u63d0\u5230\u7684\u6b65\u9aa4\uff1ahttps:\/\/trac.ffmpeg.org\/wiki\/CompilationGuide\/Ubuntu\uff1b<\/p>\n\n\n\n<p>\u6216\u8005\u4f60\u4e5f\u53ef\u4ee5\u53c2\u8003\u6211\u5199\u7684\u8fd9\u7bc7\u6587\u7ae0\uff1ahttps:\/\/ottverse.com\/vmaf-ffmpeg-ubuntu-compilation-installation-usage-guide\/\uff0c\u6211\u5df2\u7ecf\u63cf\u8ff0\u4e86FFmpeg\u5b89\u88c5\u8fc7\u7a0b\uff08\u5305\u62ec\u7f3a\u5c11\u6b65\u9aa4\uff09\u3002<\/p>\n\n\n\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;<\/p>\n\n\n\n<p>\u5e27\u7387<\/p>\n\n\n\n<p>\u5e27\u7387\uff08Frame rate\uff09\u4e5f\u53eb\u5e27\u9891\u7387\uff0c\u5e27\u7387\u662f\u89c6\u9891\u6587\u4ef6\u4e2d\u6bcf\u4e00\u79d2\u7684\u5e27\u6570\uff0c\u8089\u773c\u60f3\u770b\u5230\u8fde\u7eed\u79fb\u52a8\u56fe\u50cf\u81f3\u5c11\u9700\u898115\u5e27\u3002<\/p>\n\n\n\n<p>\u5e27\u7387<\/p>\n\n\n\n<p>1\u3001\u7528 -r \u53c2\u6570\u8bbe\u7f6e\u5e27\u7387<\/p>\n\n\n\n<p>ffmpeg \u2013i input \u2013r 25 output<\/p>\n\n\n\n<p>2\u3001\u7528fps\u7684filter\u8bbe\u7f6e\u5e27\u7387<\/p>\n\n\n\n<p>ffmpeg -i 1.mp4 -vf fps=fps=25 11.mp4<\/p>\n\n\n\n<p>\u4f8b\u5982\u8bbe\u7f6e\u5e27\u7387\u4e3a29.97fps\uff0c\u4e0b\u9762\u4e09\u79cd\u65b9\u5f0f\u5177\u6709\u76f8\u540c\u7684\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>ffmpeg -i input.avi -r 29.97 output.mp4<\/p>\n\n\n\n<p>ffmpeg -i input.avi -r 30000\/1001 output.mp4<\/p>\n\n\n\n<p>ffmpeg -i input.avi -r netsc output.mp4<\/p>\n\n\n\n<p>\u7801\u7387<\/p>\n\n\n\n<p>\u7801\u7387\u4e5f\u53eb\u6bd4\u7279\u7387\uff08Bit rate\uff09(\u4e5f\u53eb\u6570\u636e\u7387)\u662f\u4e00\u4e2a\u786e\u5b9a\u6574\u4f53\u89c6\u9891\/\u97f3\u9891\u8d28\u91cf\u7684\u53c2\u6570\uff0c\u79d2\u4e3a\u5355\u4f4d\u5904\u7406\u7684\u5b57\u8282\u6570\uff0c\u7801\u7387\u548c\u89c6\u9891\u8d28\u91cf\u6210\u6b63\u6bd4\uff0c\u5728\u89c6\u9891\u6587\u4ef6\u4e2d\u4e2d\u6bd4\u7279\u7387\u7528bps\u6765\u8868\u8fbe\u3002<\/p>\n\n\n\n<p>\u7801\u7387<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u53c2\u6570-b<\/p>\n\n\n\n<p>ffmpeg -i 1.mp4 -b 1.5M 2.mp4<\/p>\n\n\n\n<p>\u97f3\u9891\uff1a-b:a&nbsp;&nbsp;&nbsp;&nbsp; \u89c6\u9891\uff1a &#8211; b:v<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u89c6\u9891\u7801\u7387\u4e3a1500kbps<\/p>\n\n\n\n<p>ffmpeg -i input.avi -b:v 1500k output.mp4<\/p>\n\n\n\n<p>\u6587\u4ef6\u5927\u5c0f<\/p>\n\n\n\n<p>\u63a7\u5236\u8f93\u51fa\u6587\u4ef6\u5927\u5c0f<\/p>\n\n\n\n<p>-fs (file size\u9996\u5b57\u6bcd\u7f29\u5199)<\/p>\n\n\n\n<p>ffmpeg -i input.avi -fs 1024K output.mp4<\/p>\n\n\n\n<p>\u8ba1\u7b97\u8f93\u51fa\u6587\u4ef6\u5927\u5c0f<\/p>\n\n\n\n<p>(\u89c6\u9891\u7801\u7387+\u97f3\u9891\u7801\u7387) * \u65f6\u957f \/8 = \u6587\u4ef6\u5927\u5c0f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u7801\u548c\u7f16\u8f91\u89c6\u9891 \u4eca\u5929\u7528Android Studio\uff08\u540e\u9762\u7b80\u79f0AS\uff09\u91cc\u7684\u6a21\u62df\u5668\u7ed9\u7cfb\u7edf\u5f55\u5c4f\uff0c\u7528\u6765\u5c55\u793aOpenGL\u53ef &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/thereisno.top\/?p=500\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cffmpeg\u7684\u7b80\u5355\u4f7f\u7528\u65b9\u6cd5\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[102],"class_list":["post-500","post","type-post","status-publish","format-standard","hentry","category-103","tag-ffmpeg"],"_links":{"self":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=500"}],"version-history":[{"count":1,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/500\/revisions"}],"predecessor-version":[{"id":501,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/500\/revisions\/501"}],"wp:attachment":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}