{"id":292758,"date":"2021-01-17T00:49:21","date_gmt":"2021-01-16T16:49:21","guid":{"rendered":"http:\/\/4563.org\/?p=292758"},"modified":"2021-01-17T00:49:21","modified_gmt":"2021-01-16T16:49:21","slug":"%e8%af%b7%e6%95%99%e4%b8%8b%ef%bc%8c%e6%80%8e%e4%b9%88%e7%94%a8-ffprobe-%e6%9f%a5%e7%9c%8b%e9%9f%b3%e9%a2%91%e6%96%87%e4%bb%b6%e7%9a%84-%e4%bd%8d%e6%b7%b1-%ef%bc%9f-bits_per_raw_sample-n-a-bits_p","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=292758","title":{"rendered":"\u8bf7\u6559\u4e0b\uff0c\u600e\u4e48\u7528 ffprobe \u67e5\u770b\u97f3\u9891\u6587\u4ef6\u7684 “\u4f4d\u6df1” \uff1f bits_per_raw_sample = N\/A; bits_per_sample = 0 \u662f\u5565\u60c5\u51b5\uff1f"},"content":{"rendered":"
\n
\n
\n

\u8bf7\u6559\u4e0b\uff0c\u600e\u4e48\u7528 ffprobe \u67e5\u770b\u97f3\u9891\u6587\u4ef6\u7684 “\u4f4d\u6df1” \uff1f bits_per_raw_sample = N\/A; bits_per_sample = 0 \u662f\u5565\u60c5\u51b5\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : yodhcn <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u7528 ffprobe \u67e5\u770b\u97f3\u9891\u6587\u4ef6\u7684\u4fe1\u606f\u65f6\uff0c\u53d1\u73b0\u4e24\u4e2a\u770b\u4e0d\u61c2\u7684\u6570\u636e\u9879\uff0c`bits_per_raw_sample` \u548c `bits_per_sample` \u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/p>\n

\u51fa\u73b0
bits_per_raw_sample = N\/A
bits_per_sample = 0
\u53c8\u610f\u5473\u7740\u4ec0\u4e48\uff1f<\/p>\n

\u636e\u6211\u4e86\u89e3\uff0c\u5e94\u6709\u516c\u5f0f\uff1a\u6bd4\u7279\u7387 = \u91c7\u6837\u7387 * \u4f4d\u6df1 * \u58f0\u9053\u6570<\/p>\n

\u7528 `MPC-BE` \u8fd9\u4e2a\u8f6f\u4ef6\u68c0\u67e5\u67d0\u4e9b MP3 \u6587\u4ef6\u7684\u4fe1\u606f\u65f6\uff0c\u4e5f\u4f1a\u51fa\u73b0\u4e0d\u663e\u793a “\u4f4d\u6df1” \u7684\u60c5\u51b5\uff0c
\u8fd9\u662f “\u4f4d\u6df1” \u4f4e\u4e8e 16bit \u65f6\u5c31\u6ca1\u6709\u5fc5\u8981\u770b\u4e86\u7684\u610f\u601d\u5417\uff1f<\/p>\n

\u53e6\u5916\uff0c\u4f4d\u6df1\u3001\u91c7\u6837\u7387\u3001\u6bd4\u7279\u7387\u7b49\uff0c\u8fd9\u4e9b\u503c\uff0c\u54ea\u4e00\u4e2a\u6700\u80fd\u53cd\u6620\u97f3\u8d28\uff1f <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    MPC-BE \u6211\u8bb0\u5f97\u662f\u57fa\u4e8e LavFilter\uff0c\u800c Lav \u53c8\u662f\u57fa\u4e8e ffmpeg\u2026\u2026
    \u6bd4\u7279\u7387\u8fd8\u8981\u8003\u8651\u5230\u538b\u7f29\uff0c\u5c24\u5176 mp3 \u662f\u6709\u635f\u538b\u7f29<\/p>\n

    \u51b3\u5b9a\u97f3\u8d28\u7684\u56e0\u7d20\u5f88\u591a\uff0c\u5982\u679c\u62ff 5 \u5757\u94b1\u7206\u97f3\u9ea6\u5f55 96kHz 48bit\uff0c\u97f3\u8d28\u4e5f\u597d\u4e0d\u5230\u54ea\u53bb\u3002\u4f55\u51b5\u5355\u5c31\u6587\u4ef6\u6765\u8bf4\uff0c\u4f60\u53ef\u4ee5\u968f\u4fbf\u5347\u964d\u91c7\u6837
    \u5c31\u7b97\u95ee\uff0c\u5728\u964d\u91c7\u6837\u7684\u8fc7\u7a0b\u4e2d\u964d\u4f4e\u54ea\u4e2a\u5bf9\u97f3\u8d28\u8fd8\u539f\u5ea6\u5f71\u54cd\u6700\u5927\uff0c\u90a3\u4e5f\u662f\u4e2a\u504f\u5fae\u5206\u65b9\u7a0b\u3002
    \u4f55\u51b5\u8fd9\u4e09\u4e2a\u503c\u8fd8\u6709\u8054\u52a8\u5173\u7cfb\u2026\u2026
    \u5177\u4f53\u4f60\u53ea\u80fd\u51ed\u4f60\u7684\u8033\u6735\u3002
    \u5982\u679c\u4f60\u662f\u60f3\u81ea\u52a8\u6311\u9009\uff0c\u65e0\u8111\u9009\u6bd4\u7279\u7387\u5927\u7684\u5427\uff0c\u672a\u5fc5\u6700\u597d\uff0c\u4f46\u6700\u8ba9\u4f60\u611f\u89c9\u8212\u670d\uff0c\u201c\u6211\u9009\u4e86\u6bd4\u7279\u7387\u6700\u5927\u7684\uff0c\u5176\u4ed6\u591a\u534a\u53ea\u4f1a\u66f4\u5dee\u5427\u201d\u8fd9\u6837\u5b89\u6170\u81ea\u5df1\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AX5N <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7406\u8bba\u4e0a\u54ea\u4e2a\u90fd\u80fd\u53cd\u5e94\u51fa\u97f3\u8d28\uff0c\u5b9e\u9645\u4e0a\u54ea\u4e2a\u90fd\u53cd\u5e94\u4e0d\u51fa\u97f3\u8d28\u3002<\/p>\n

    \u4eba\u8033\u542c\u4e0d\u51fa\u4f4d\u6df1\u9ad8\u4f4e\u7684\u533a\u522b\uff0c\u91c7\u6837\u7387\u65e9\u5df2\u8d85\u51fa\u4eba\u8033\u6781\u9650\uff0c\u6bd4\u7279\u7387\u548c\u538b\u7f29\u7b97\u6cd5\u6709\u5173\uff0c\u4e0d\u540c\u7b97\u6cd5\u7684\u6bd4\u7279\u7387\u6ca1\u6709\u6bd4\u8f83\u4ef7\u503c\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : mmlmml1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd9\u4e09\u4e2a\u90fd\u4e0d\u80fd\u53cd\u6620\u97f3\u8d28\u3002\u4e3e\u4e2a\u6781\u7aef\u7684\u4f8b\u5b50\uff0c\u4e00\u6bb5\u539f\u59cb\u4e3a 16kHz\/16bit \u97f3\u9891\uff0c\u5c06\u5b83\u5148\u538b\u7f29\u5230 8kHz\/8bit \u518d upscale \u5230 96kHz\/24bit\uff0c\u5904\u7406\u524d\u548c\u5904\u7406\u540e\u7684\u54ea\u4e2a\u66f4\u597d\uff1f<\/p>\n

    \u66f4\u52a0\u51c6\u786e\u7684\u505a\u6cd5\u6709\uff0c\u5206\u6790\u9891\u8c31\u56fe\uff0c\u5206\u6790 SNR \u7b49\u7b49\uff0c\u800c\u4e0d\u662f\u7b80\u5355\u5206\u6790\u8fd9\u51e0\u9879\u6570\u636e\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : mmlmml1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53e6\u5916\uff0cbits_per_raw_sample \u8868\u793a\u6bcf\u4e2a\u6837\u672c\u5728\u6587\u4ef6\u4e2d\u5360\u7528\u7684\u4f4d\u6570\uff0cbits_per_sample \u8868\u793a\u6bcf\u4e2a\u6837\u672c\u5b9e\u9645\u7684\u4f4d\u6570\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u4e00\u4e2a\u6837\u672c\u53ef\u4ee5\u662f 16 \u4f4d\u7684\uff08 bits_per_sample \uff09\uff0c\u4f46\u5728\u6587\u4ef6\u4e2d\u5360\u7528 24 \u4f4d\uff08 bits_per_raw_sample \uff09\uff0c\u5269\u4e0b\u7684 8 \u4f4d\u5168\u90e8\u4e3a 0 \u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Jirajine <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u53ef\u4ee5\u7406\u89e3\u4e3a\u74f6\u5b50\u91cc\u88c5\u6c34\uff0c\u53c2\u6570\u8d8a\u9ad8\u4ee3\u8868\u74f6\u5b50\u8d8a\u5927\uff0c\u201c\u80fd\u591f\u201d\u88c5\u4e0b\u66f4\u591a\u5730\u6c34\u3002\u4f46\u5b9e\u9645\u88c5\u7684\u6c34\u6709\u591a\u5c11\uff0c\u6ca1\u6709\u4efb\u4f55\u53c2\u6570\u80fd\u591f\u76f4\u63a5\u53cd\u6620\u51fa\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : scarllium <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f4d\u6df1\u662f\u9488\u5bf9\u65e0\u635f\u538b\u7f29\u7684 wav \u7b49\u683c\u5f0f\uff0cmp3\/aac \u6709\u635f\u683c\u5f0f\u7684\u4f4d\u6df1\u4e0d\u662f\u6052\u5b9a\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : msg7086 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6709\u635f\u538b\u7f29\u7684\u4f4d\u6df1\u6ca1\u6709\u5177\u4f53\u610f\u4e49\u3002\u4f4d\u6df1\u662f\u6307\u6570\u636e\u7684\u7cbe\u5ea6\uff0c\u6709\u635f\u538b\u7f29\u4e2d\uff0c\u6570\u636e\u90fd\u53d8\u4e86\uff0c\u8fd8\u8c08\u4ec0\u4e48\u7cbe\u5ea6\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u8bf7\u6559\u4e0b\uff0c\u600e\u4e48\u7528 ffprobe \u67e5…<\/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\/292758"}],"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=292758"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/292758\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=292758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=292758"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=292758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}