{"id":299,"date":"2018-10-05T12:25:07","date_gmt":"2018-10-05T04:25:07","guid":{"rendered":"https:\/\/chris.com.tw\/main\/?p=299"},"modified":"2018-10-15T13:32:57","modified_gmt":"2018-10-15T05:32:57","slug":"ffmpeg-%e6%80%8e%e9%ba%bc%e8%bd%89%e9%83%bd%e6%9c%89%e6%a9%ab%e7%b4%8b-%e5%8f%83%e6%95%b8%e4%bd%bf%e7%94%a8%e5%bf%83%e5%be%97%e5%88%86%e4%ba%ab","status":"publish","type":"post","link":"http:\/\/www.chris.com.tw\/main\/?p=299","title":{"rendered":"ffmpeg \u600e\u9ebc\u8f49\u90fd\u6709\u6a6b\u7d0b + \u53c3\u6578\u4f7f\u7528\u5fc3\u5f97\u5206\u4eab"},"content":{"rendered":"<p>\u770b\u4e86\u81ea\u5df1 NAS \u5167\u7684\u6bcf\u5929\u5bb9\u91cf\u5831\u544a\u4e00\u500b\u591a\u6708\uff0c\u5e7e\u500b\u8d85\u5927\u6a94\u6848\u8d8a\u770b\u8d8a\u7919\u773c\uff0c\u60f3\u8aaa\u52d5\u624b\u7528 FFMPEG \u628a\u65e9\u671f\u88fd\u4f5c\u7684\u5f71\u7247\u6a94\u6848\u91cd\u65b0\u58d3\u7e2e\uff0c\u4f46\u662f\u600e\u9ebc\u58d3\u90fd\u6709\u554f\u984c\uff0c\u4e5f\u89e3\u6c7a\u4e86\u5e7e\u500b\u554f\u984c\uff0c\u8ddf\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u5e7e\u500b\u53c3\u6578\u4f7f\u7528\u5fc3\u5f97\u548c\u7591\u554f\u3002<\/p>\n<p>\u6700\u5f8c\u6211\u7528\u7684\u6307\u4ee4\u6a94\uff1a<\/p>\n<blockquote><p>.\\ffmpeg -i &#8220;\u6e2c\u8a66.avi&#8221; -max_muxing_queue_size 8192\u00a0 -ss 00:20 -t 00:30 -c:v libx264 -b 24000k\u00a0 -preset veryslow -minrate 24000k\u00a0 -tune film -crf 5 -c:a mp3\u00a0 crf15_b24m.mkv<\/p><\/blockquote>\n<ol>\n<li>.\\ffmpeg \uff1a\u56e0\u70ba\u662f\u4f7f\u7528 powershell \uff0c\u6240\u4ee5\u4e0b\u6307\u4ee4\u524d\u9762\u52a0\u4e86 .\\<\/li>\n<li>-i &#8220;\u6e2c\u8a66.avi&#8221; \uff1a \u6307\u5b9a\u8f38\u5165\u6a94\u540d\uff0c\u5982\u679c\u6709\u4e2d\u6587\u5b57\uff0c\u9700\u8981\u7528\u96d9\u5f15\u865f\u62ec\u8d77\u4f86\u3002<\/li>\n<li>-max_muxing_queue_size 8192 \uff1a\u56e0\u70ba\u539f\u59cb\u6a94\u6848\u5f88\u5927\u7684\u95dc\u4fc2\uff0824GB\uff09\u6216\u662f\u6211\u539f\u59cb\u6a94\u76f4\u63a5\u6293100m\u5340\u57df\u7db2\u8def\uff08NAS\u5167\u7684\u6a94\u6848\uff09\u7684\u901f\u5ea6\u4e0d\u5920\u5feb\uff0c\u6240\u4ee5\u4e00\u76f4\u6703\u51fa\u73fe\u00a0Too many packets buffered for output stream 0:0\u00a0 \uff0c\u6211\u89e3\u6c7a\u65b9\u6cd5\u662f\u628a\u9019\u500b\u53c3\u6578\u653e\u5927\u5230 819200 \u624d\u53ef\u4ee5\u9806\u5229\u8f49\u6a94\u3002<\/li>\n<li>-ss 00:20 \uff1a\u6a94\u6848\u958b\u59cb\u8f49\u6a94\u7684\u4f4d\u7f6e\uff0c\u53e6\u5916\u9084\u6709\u66f4\u7cbe\u78ba\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u67e5\u4e00\u4e0b\u624b\u518a<\/li>\n<li>-t 00:30 \uff1a\u8981\u526a\u591a\u9577\u7684\u6642\u9593\uff0c\u4e00\u958b\u59cb\u6211\u4e00\u76f4\u641e\u932f\uff0c\u4ee5\u70ba\u9019\u5169\u500b\u53c3\u6578\u662f\u526a\u8f2f 20 ~ 30 \u79d2 \u7e3d\u5171\u5341\u79d2\uff0c\u5f8c\u4f86\u6ce8\u610f\u770b\u624d\u767c\u73fe\u662f\u5f9e20\u79d2\u8655\u958b\u59cb\u526a\u4e0b30\u79d2\u9577\u5ea6\u7684\u5f71\u7247\u3002<\/li>\n<li>-c:v libx264 \uff1a -c:v \u662f\u7c21\u5beb\uff0clibx264 \u662f\u6307\u5b9a\u8f49\u78bc\u683c\u5f0f\u3002 \uff08mp4 \u5e38\u7528 libx264\uff09<\/li>\n<li>-b 24000k\u00a0 \uff1abitrate 24M \uff0c\u7c21\u55ae\u8aaa\u6b64\u6578\u503c\u8d8a\u9ad8\uff0c\u756b\u8cea\u8d8a\u597d\uff0c\u53ef\u4ee5\u53c3\u8003\u539f\u59cb\u6a94\u7684 bitrate\u3002<\/li>\n<li>-preset veryslow\u00a0\uff1a \u8f49\u78bc\u901f\u5ea6\u8d8a\u6162\uff0c\u756b\u8cea\u8d8a\u597d\uff0c\u5f9e ultrafast \u5230 placebo\uff0c\u4f46\u662f placebo \u6548\u76ca\u592a\u4f4e\u3002<\/li>\n<li>-minrate 24000k\u00a0 \uff1a\u6700\u4f4e\u756b\u8cea\uff0c\u76f8\u5c0d\u61c9\u9084\u6709 -maxrate<\/li>\n<li>-tune film \uff1a\u5f71\u7247\u6700\u4f73\u5316\uff0c\u5982\u679c\u662f\u7167\u7247\u5408\u7c4d\uff0c\u53ef\u4ee5\u7528\u00a0stillimage<\/li>\n<li>-crf 5 \uff1a\u58d3\u7e2e\u6bd4\u5f9e 1 \u5230 51 \uff0c 18 \u7b97\u662f\u8089\u773c\u770b\u4e0d\u51fa\u7684\u7a0b\u5ea6\uff0c\u56e0\u70ba\u6211\u4e00\u76f4\u8f49\u51fa\u6709\u6a6b\u7d0b\uff0c\u5c31\u7d22\u6027\u8abf\u5230 5<\/li>\n<li>-c:a mp3 \uff1a\u97f3\u6548\u6307\u5b9a\u8f49\u6a94\u683c\u5f0f\uff0c\u4e5f\u53ef\u7528 copy \u5c31\u4e0d\u8f49\u97f3\u8a0a\u3002<\/li>\n<li>crf15_b24m.mkv\uff1a\u8f38\u51fa\u6a94\u540d\uff0c \u526f\u6a94\u540d\u90e8\u4efd\u53ef\u4ee5\u8b93 ffmpeg \u81ea\u52d5\u5224\u65b7\u8981\u8f49\u54ea\u7a2e\u683c\u5f0f\u3002<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-300\" src=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-219-300x221.png\" alt=\"\" width=\"300\" height=\"221\" srcset=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-219-300x221.png 300w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-219-623x458.png 623w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-219-768x565.png 768w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-219.png 806w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-301\" src=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-218-300x221.png\" alt=\"\" width=\"300\" height=\"221\" srcset=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-218-300x221.png 300w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-218-623x458.png 623w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-218-768x565.png 768w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-218.png 806w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-302\" src=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-300x221.png\" alt=\"\" width=\"300\" height=\"221\" srcset=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-300x221.png 300w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-623x458.png 623w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-768x565.png 768w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217.png 806w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-303\" src=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/compare_After-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/compare_After-300x225.jpg 300w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/compare_After-623x467.jpg 623w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/compare_After.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>\u6b64\u554f\u984c\u5df2\u7d93\u89e3\u6c7a\uff0c\u4f7f\u7528\u00a0-deinterlace<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-302\" src=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217.png\" alt=\"\" width=\"806\" height=\"593\" srcset=\"https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217.png 806w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-300x221.png 300w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-623x458.png 623w, https:\/\/chris.com.tw\/main\/wp-content\/uploads\/2018\/10\/Image-217-768x565.png 768w\" sizes=\"auto, (max-width: 806px) 100vw, 806px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u770b\u4e86\u81ea\u5df1 NAS 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