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无损音频ape flac wav mp3的检测方法

如果大家留意网络上一些无损音质音频文件的话，都离不开ape、flac、wav几种，mp3格式的有时候也有高音质的文件，特别是比特率达到320K、采样率48000的音频音质，都算是无损或是接近无损的音质了。

我们检测这些无损音质音频文件的方法是使用ffmpeg里的媒体检测模块ffprobe.exe，在下载或编译ffmpeg的时候，bin目录下会生成三个程序，1、是ffmpeg.exe，这个是编解码程序，2、是ffprobe.exe，这个是媒体检测程序，3、ffplaye.exe,这是媒体播放程序。

  1. D:\ffmpeg\bin\ffprobe.exe -help
  2. #帮助信息 查询ffprobe.exe所有用法

首先我们来看一看一个ape格式的文件的检测信息。

  1. D:\ffmpeg\bin\ffprobe.exe -of json -show_format -show_streams D:\yisheng.ape
  2. #使用json显示所返回的文件信息
  3. #-show_format、-show_streams可以搜索相关注释
  4. Input #0, ape, from 'D:\yisheng.ape':
  5.   Metadata:
  6.     Album           : 齊天周大聖之西遊雙記
  7.     Album artist    : Various
  8.     Artist          : 卢冠廷
  9.     COMMENT         : 163 key(Don't modify):6YURAByiRHQ6CI5tvtxzQg==
  10.     Genre           : Soundtrack
  11.     Title           : 一生所爱
  12.     Track           : 6/11
  13.     Year            : 1999
  14.   Duration: 00:04:33.67, start: 0.000000, bitrate: 719 kb/s
  15.     Stream #0:0: Audio: ape (APE  / 0x20455041), 44100 Hz, stereo, s16p
  16.     "streams": [
  17.         {
  18.             "index": 0,
  19.             "codec_name": "ape",
  20.             "codec_long_name": "Monkey's Audio",
  21.             "codec_type": "audio",
  22.             "codec_time_base": "1/44100",
  23.             "codec_tag_string": "APE ",
  24.             "codec_tag": "0x20455041",
  25.             "sample_fmt": "s16p",
  26.             "sample_rate": "44100",
  27.             "channels": 2,
  28.             "channel_layout": "stereo",
  29.             "bits_per_sample": 0,
  30.             "r_frame_rate": "0/0",
  31.             "avg_frame_rate": "0/0",
  32.             "time_base": "1/44100",
  33.             "start_pts": 0,
  34.             "start_time": "0.000000",
  35.             "duration_ts": 12068700,
  36.             "duration": "273.666667",
  37.             "nb_frames": "164",
  38.             "disposition": {
  39.                 "default": 0,
  40.                 "dub": 0,
  41.                 "original": 0,
  42.                 "comment": 0,
  43.                 "lyrics": 0,
  44.                 "karaoke": 0,
  45.                 "forced": 0,
  46.                 "hearing_impaired": 0,
  47.                 "visual_impaired": 0,
  48.                 "clean_effects": 0,
  49.                 "attached_pic": 0,
  50.                 "timed_thumbnails": 0
  51.             }
  52.         }
  53.     ],
  54.     "format": {
  55.         "filename": "D:\\yisheng.ape",
  56.         "nb_streams": 1,
  57.         "nb_programs": 0,
  58.         "format_name": "ape",
  59.         "format_long_name": "Monkey's Audio",
  60.         "start_time": "0.000000",
  61.         "duration": "273.666667",
  62.         "size": "24617763",
  63.         "bit_rate": "719642",
  64.         "probe_score": 100,
  65.         "tags": {
  66.             "Album": "榻婂ぉ鍛ㄥぇ鑱栦箣瑗块亰闆欒",
  67.             "Album artist": "Various",
  68.             "Artist": "鍗㈠啝寤?,
  69.             "COMMENT": "163 key(Don't modify):6YURAByiRHQ6CI5tvtxzQg==",
  70.             "Genre": "Soundtrack",
  71.             "Title": "涓€鐢熸墍鐖?,
  72.             "Track": "6/11",
  73.             "Year": "1999"
  74.         }
  75.     }
  76. }
  77. PS D:\>

我们可以看到，音频采样率是44100hz，这个就是无损音质的标准了。

无损音频ape flac wav mp3的检测方法

  1. D:\ffmpeg\bin\ffprobe.exe -of json -show_format -show_streams D:\tingwen.flac
  2. #检测flac格式的文件
  3. Input #0, flac, from 'D:\tingwen.flac':
  4.   Metadata:
  5.     ALBUM           : 听闻远方有你
  6.     ARTIST          : 刘艺 雯
  7.     TITLE           : 听闻远方有你
  8.   Duration: 00:04:19.47, start: 0.000000, bitrate: 942 kb/s
  9.     Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
  10.     Stream #0:1: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 800x800 [SAR 72:72 DAR 1:1], 90k tbr, 9
  11. 0k tbn, 90k tbc (attached pic)
  12.     Metadata:
  13.       comment         : Cover (front)
  14.     "streams": [
  15.         {
  16.             "index": 0,
  17.             "codec_name": "flac",
  18.             "codec_long_name": "FLAC (Free Lossless Audio Codec)",
  19.             "codec_type": "audio",
  20.             "codec_time_base": "1/44100",
  21.             "codec_tag_string": "[0][0][0][0]",
  22.             "codec_tag": "0x0000",
  23.             "sample_fmt": "s16",
  24.             "sample_rate": "44100",
  25.             "channels": 2,
  26.             "channel_layout": "stereo",
  27.             "bits_per_sample": 0,
  28.             "r_frame_rate": "0/0",
  29.             "avg_frame_rate": "0/0",
  30.             "time_base": "1/44100",
  31.             "start_pts": 0,
  32.             "start_time": "0.000000",
  33.             "duration_ts": 11442513,
  34.             "duration": "259.467415",
  35.             "bits_per_raw_sample": "16",
  36.             "disposition": {
  37.                 "default": 0,
  38.                 "dub": 0,
  39.                 "original": 0,
  40.                 "comment": 0,
  41.                 "lyrics": 0,
  42.                 "karaoke": 0,
  43.                 "forced": 0,
  44.                 "hearing_impaired": 0,
  45.                 "visual_impaired": 0,
  46.                 "clean_effects": 0,
  47.                 "attached_pic": 0,
  48.                 "timed_thumbnails": 0
  49.             }
  50.         },
  51.         {
  52.             "index": 1,
  53.             "codec_name": "mjpeg",
  54.             "codec_long_name": "Motion JPEG",
  55.             "profile": "Baseline",
  56.             "codec_type": "video",
  57.             "codec_time_base": "0/1",
  58.             "codec_tag_string": "[0][0][0][0]",
  59.             "codec_tag": "0x0000",
  60.             "width": 800,
  61.             "height": 800,
  62.             "coded_width": 800,
  63.             "coded_height": 800,
  64.             "closed_captions": 0,
  65.             "has_b_frames": 0,
  66.             "sample_aspect_ratio": "1:1",
  67.             "display_aspect_ratio": "1:1",
  68.             "pix_fmt": "yuvj444p",
  69.             "level": -99,
  70.             "color_range": "pc",
  71.             "color_space": "bt470bg",
  72.             "chroma_location": "center",
  73.             "refs": 1,
  74.             "r_frame_rate": "90000/1",
  75.             "avg_frame_rate": "0/0",
  76.             "time_base": "1/90000",
  77.             "start_pts": 0,
  78.             "start_time": "0.000000",
  79.             "duration_ts": 23352067,
  80.             "duration": "259.467411",
  81.             "bits_per_raw_sample": "8",
  82.             "disposition": {
  83.                 "default": 0,
  84.                 "dub": 0,
  85.                 "original": 0,
  86.                 "comment": 0,
  87.                 "lyrics": 0,
  88.                 "karaoke": 0,
  89.                 "forced": 0,
  90.                 "hearing_impaired": 0,
  91.                 "visual_impaired": 0,
  92.                 "clean_effects": 0,
  93.                 "attached_pic": 1,
  94.                 "timed_thumbnails": 0
  95.             },
  96.             "tags": {
  97.                 "comment": "Cover (front)"
  98.             }
  99.         }
  100.     ],
  101.     "format": {
  102.         "filename": "D:\\tingwen.flac",
  103.         "nb_streams": 2,
  104.         "nb_programs": 0,
  105.         "format_name": "flac",
  106.         "format_long_name": "raw FLAC",
  107.         "start_time": "0.000000",
  108.         "duration": "259.467415",
  109.         "size": "30578900",
  110.         "bit_rate": "942820",
  111.         "probe_score": 100,
  112.         "tags": {
  113.             "ALBUM": "鍚椈杩滄柟鏈変綘",
  114.             "ARTIST": "鍒樿壓 闆?,
  115.             "TITLE": "鍚椈杩滄柟鏈変綘"
  116.         }
  117.     }
  118. }
  119. PS D:\>

无损音频ape flac wav mp3的检测方法

上边这个flac格式的文件的采样率也是44100hz

接下来我们看一个高音质的mp3文件的检测信息，这个文件是从某云听歌平台上下载的无损音质文件，但是它却是mp3格式的。

  1. D:\ffmpeg\bin\ffprobe.exe -of json -show_format -show_streams D:\guxiangfengjing.mp3
  2. Input #0, mp3, from 'D:\guxiangfengjing.mp3':
  3.   Metadata:
  4.     genre           : Newage
  5.     encoder         : Lavf56.4.101
  6.     comment         : 163 key(Don't modify):L64FU3W4YxX3ZFTmbZ+8/VcZXal+0oHC6/7jrIQD5RCm3ok4oJqz1rmYIq3fPgZr7oVhFxjFHEpf
  7. Xsx1Vo0FkUTxYwLVHUgpQj0RcSPVDd8icyi9gEvyIV3kemBc/XTTMp/r0k9XpFbMELrX1Rq06MZN6OV9ZHzm13DArU7sD/xtUX433smIIMoYEoS1xhdC/6IB
  8. tfiULFAi9LmBRvmyaT4giJqztMUu+JHGWPVEO
  9.     album           : Kidou 木道
  10.     title           : 故郷の原风景
  11.     artist          : 宗次郎
  12.     disc            : 1
  13.     track           : 1
  14.     date            : 1997
  15.   Duration: 00:04:42.75, start: 0.025056, bitrate: 338 kb/s
  16.     Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 320 kb/s
  17.     Stream #0:1: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 640x640 [SAR 72:72 DAR 1:1], 90k tbr, 9
  18. 0k tbn, 90k tbc (attached pic)
  19.     Metadata:
  20.       comment         : Media (e.g. label side of CD)
  21.     "streams": [
  22.         {
  23.             "index": 0,
  24.             "codec_name": "mp3",
  25.             "codec_long_name": "MP3 (MPEG audio layer 3)",
  26.             "codec_type": "audio",
  27.             "codec_time_base": "1/44100",
  28.             "codec_tag_string": "[0][0][0][0]",
  29.             "codec_tag": "0x0000",
  30.             "sample_fmt": "fltp",
  31.             "sample_rate": "44100",
  32.             "channels": 2,
  33.             "channel_layout": "stereo",
  34.             "bits_per_sample": 0,
  35.             "r_frame_rate": "0/0",
  36.             "avg_frame_rate": "0/0",
  37.             "time_base": "1/14112000",
  38.             "start_pts": 353600,
  39.             "start_time": "0.025057",
  40.             "duration_ts": 3990159360,
  41.             "duration": "282.749388",
  42.             "bit_rate": "320000",
  43.             "disposition": {
  44.                 "default": 0,
  45.                 "dub": 0,
  46.                 "original": 0,
  47.                 "comment": 0,
  48.                 "lyrics": 0,
  49.                 "karaoke": 0,
  50.                 "forced": 0,
  51.                 "hearing_impaired": 0,
  52.                 "visual_impaired": 0,
  53.                 "clean_effects": 0,
  54.                 "attached_pic": 0,
  55.                 "timed_thumbnails": 0
  56.             }
  57.         },
  58.         {
  59.             "index": 1,
  60.             "codec_name": "mjpeg",
  61.             "codec_long_name": "Motion JPEG",
  62.             "profile": "Baseline",
  63.             "codec_type": "video",
  64.             "codec_time_base": "0/1",
  65.             "codec_tag_string": "[0][0][0][0]",
  66.             "codec_tag": "0x0000",
  67.             "width": 640,
  68.             "height": 640,
  69.             "coded_width": 640,
  70.             "coded_height": 640,
  71.             "closed_captions": 0,
  72.             "has_b_frames": 0,
  73.             "sample_aspect_ratio": "1:1",
  74.             "display_aspect_ratio": "1:1",
  75.             "pix_fmt": "yuvj444p",
  76.             "level": -99,
  77.             "color_range": "pc",
  78.             "color_space": "bt470bg",
  79.             "chroma_location": "center",
  80.             "refs": 1,
  81.             "r_frame_rate": "90000/1",
  82.             "avg_frame_rate": "0/0",
  83.             "time_base": "1/90000",
  84.             "start_pts": 2255,
  85.             "start_time": "0.025056",
  86.             "duration_ts": 25447445,
  87.             "duration": "282.749389",
  88.             "bits_per_raw_sample": "8",
  89.             "disposition": {
  90.                 "default": 0,
  91.                 "dub": 0,
  92.                 "original": 0,
  93.                 "comment": 0,
  94.                 "lyrics": 0,
  95.                 "karaoke": 0,
  96.                 "forced": 0,
  97.                 "hearing_impaired": 0,
  98.                 "visual_impaired": 0,
  99.                 "clean_effects": 0,
  100.                 "attached_pic": 1,
  101.                 "timed_thumbnails": 0
  102.             },
  103.             "tags": {
  104.                 "comment": "Media (e.g. label side of CD)"
  105.             }
  106.         }
  107.     ],
  108.     "format": {
  109.         "filename": "D:\\guxiangfengjing.mp3",
  110.         "nb_streams": 2,
  111.         "nb_programs": 0,
  112.         "format_name": "mp3",
  113.         "format_long_name": "MP2/3 (MPEG audio layer 2/3)",
  114.         "start_time": "0.025056",
  115.         "duration": "282.749388",
  116.         "size": "11976986",
  117.         "bit_rate": "338872",
  118.         "probe_score": 51,
  119.         "tags": {
  120.             "genre": "Newage",
  121.             "encoder": "Lavf56.4.101",
  122.             "comment": "163 key(Don't modify):L64FU3W4YxX3ZFTmbZ+8/VcZXal+0oHC6/7jrIQD5RCm3ok4oJqz1rmYIq3fPgZr7oVhFxjFHE
  123. pfXsx1Vo0FkUTxYwLVHUgpQj0RcSPVDd8icyi9gEvyIV3kemBc/XTTMp/r0k9XpFbMELrX1Rq06MZN6OV9ZHzm13DArU7sD/xtUX433smIIMoYEoS1xhdC/6
  124. IBtfiULFAi9LmBRvmyaT4giJqztMUu+JHGWPVEOCH9toFWVNES9chRg9hR0047PwDY7mRGbuJGvDRn2LnmJsy9brN3O9OG31cR8m6nc0d+nH6kVEqHdxBLhf
  125. XW3pIEzl9NWazcbywoS+OyWdjG9KojjAdCuWnMdlKS7I5o5rCwv8bRpNMntguTnwEX99GznRe4XaIJkzvoB7cutJHHltHE5ZtUm/TCVCsrzX9phCuAp+hXNC
  126. 9B89E5O/pyVBkI95pUv+gIqUUfxcePdBzyWZS7tZh/+DR+8/ZGhkwKPMbl1OcrMT3tzvhSf3GCcF/u7b8cQdI8quSJAZ02VcS4zA==",
  127.             "album": "Kidou 鏈ㄩ亾",
  128.             "title": "鏁呴兎銇師椋庢櫙",
  129.             "artist": "瀹楁閮?,
  130.             "disc": "1",
  131.             "track": "1",
  132.             "date": "1997"
  133.         }
  134.     }
  135. }
  136. PS D:\>

无损音频ape flac wav mp3的检测方法

如果大家仔细看，可以看出来里边的一些信息是符合我们无损音质文件的特征的，采样率44100、比特率320k等。

下边这个wav文件是华为Mate手机的电话录音机录制的，但是它也是符合无损音质的一些特征的。

所以，一般我们分析音频文件是否是无损音质的时候，不光是需要分辨它的文件格式，我们还需要分析它的编解码信息和一些比特率、采样率等。

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