{"id":819,"date":"2022-03-18T14:34:10","date_gmt":"2022-03-18T14:34:10","guid":{"rendered":"https:\/\/affiv.com\/?p=819"},"modified":"2022-03-18T14:34:18","modified_gmt":"2022-03-18T14:34:18","slug":"what-is-m4a-file-format-how-to-open-and-convert-m4a-files","status":"publish","type":"post","link":"https:\/\/affiv.com\/ja\/what-is-m4a-file-format-how-to-open-and-convert-m4a-files\/","title":{"rendered":"M4A\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f M4A\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u5909\u63db\u3059\u308b\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>MPEG-4\u30aa\u30fc\u30c7\u30a3\u30aa\u30d5\u30a1\u30a4\u30eb\u306e2\u756a\u76ee\u306e\u540d\u524d\u306fM4A\u3067\u3059\u3002\u3053\u308c\u306f\u3001AppleiTunesStore\u304b\u3089\u66f2\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306e\u5f62\u5f0f\u3068\u3057\u3066\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>M4A\u306f\u901a\u5e38\u3001\u4e0d\u53ef\u9006\u306eAdvanced Audio Codec\uff08AAC\uff09\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002\u3082\u3061\u308d\u3093\u3001\u4e00\u90e8\u306eM4A\u30d5\u30a1\u30a4\u30eb\u306f\u3001Apple Lossless Audio Transcoder\uff08ALAC\uff09\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b9\u30ec\u30b9\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>iTunes Store\u304b\u3089\u8457\u4f5c\u6a29\u3067\u4fdd\u8b77\u3055\u308c\u305f\u66f2\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3068\u3001M4P\u30b5\u30d6\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u78ba\u5b9f\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>M4A\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u3069\u3061\u3089\u3082MPEG-4\u5f62\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u305f\u3081\u3001MPEG-4\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\uff08MP4\uff09\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u524d\u8005\u306f\u30aa\u30fc\u30c7\u30a3\u30aa\u30b3\u30f3\u30c6\u30f3\u30c4\u3057\u304b\u4fdd\u5b58\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-ht-block-toc  is-style-outline htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">\u76ee\u6b21\u3092\u898b\u308b<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#htoc-how-to-open-m4a-files\">M4A\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u65b9\u6cd5\u306f\uff1f<\/a><\/li><li class=\"\"><a href=\"#htoc-how-can-i-convert-m4a-to-mp3-or-other-files\">M4A\u3092MP3\u307e\u305f\u306f\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/a><\/li><li class=\"\"><a href=\"#htoc-still-can-t-open-the-m4a-file\">\u305d\u308c\u3067\u3082M4A\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u304b\uff1f<\/a><\/li><li class=\"\"><a href=\"#htoc-more-information-about-m4a\">M4A\u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831<\/a><\/li><\/ul><\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"http:\/\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047-1024x576.jpg\" alt=\"m4a\u30d5\u30a1\u30a4\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b\" class=\"wp-image-820 lazyload\"\/><noscript><img decoding=\"async\" width=\"900\" height=\"506\" src=\"https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?resize=900%2C506\" alt=\"m4a\u30d5\u30a1\u30a4\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b\" class=\"wp-image-820 lazyload\" srcset=\"https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?resize=18%2C10&amp;ssl=1 18w, https:\/\/i0.wp.com\/affiv.com\/wp-content\/uploads\/2022\/03\/My-project-2022-03-18T222454.047.jpg?w=1280&amp;ssl=1 1280w\" sizes=\"(max-width: 900px) 100vw, 900px\" data-recalc-dims=\"1\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-how-to-open-m4a-files\">M4A\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n\n<p>\u591a\u304f\u306e\u97f3\u697d\u304a\u3088\u3073\u30d3\u30c7\u30aa\u30d7\u30ec\u30fc\u30e4\u30fc\u306f\u3001M4A\u5f62\u5f0f\u306e\u30aa\u30fc\u30d7\u30f3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/www.videolan.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">VLC media player<\/a>, <a href=\"https:\/\/www.apple.com\/itunes\/\" target=\"_blank\" rel=\"noreferrer noopener\">iTunes<\/a>\u3001QuickTime\u3001Windows Media Player\uff08v11\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u306f <a href=\"https:\/\/codecguide.com\/download_kl.htm\" target=\"_blank\" rel=\"noreferrer noopener\">K-Lite Codec Pack<\/a>), <a href=\"https:\/\/mpc-hc.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">Media Player Classic<\/a>, <a href=\"http:\/\/www.winamp.com\/index.html\" target=\"_blank\" rel=\"noreferrer noopener\">Winamp<\/a>\u3001\u306a\u3069\u3002<\/p>\n\n\n\n<p>Android\u30bf\u30d6\u30ec\u30c3\u30c8\u3068\u643a\u5e2f\u96fb\u8a71\u3001\u304a\u3088\u3073Apple iPhone\u3001iPad\u3001iPod touch\u306b\u306fAAC\u307e\u305f\u306fAALC\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7279\u5225\u306a\u30a2\u30d7\u30ea\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u30e1\u30fc\u30eb\u3084Web\u30b5\u30a4\u30c8\u304b\u3089\u76f4\u63a5\u518d\u751f\u3067\u304d\u308bM4A\u306e\u76f4\u63a5\u518d\u751f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/wiki.gnome.org\/Apps\/Rhythmbox\" target=\"_blank\" rel=\"noreferrer noopener\">Rhythmbox<\/a> \u306fLinux\u7528\u306e\u30d7\u30ec\u30fc\u30e4\u30fc\u3067\u3059\u304c\u3001Mac\u30e6\u30fc\u30b6\u30fc\u306f <a href=\"https:\/\/mac.eltima.com\/media-player.html\" target=\"_blank\" rel=\"noreferrer noopener\">Elmedia Player<\/a>\u3001\u304a\u3088\u3073MPEG-4\u5f62\u5f0f\u304cM4A\u304a\u3088\u3073MP4\u30d5\u30a1\u30a4\u30eb\u306b\u4f7f\u7528\u3055\u308c\u308b\u305f\u3081\u3001\u3044\u305a\u308c\u304b\u306e\u5f62\u5f0f\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u97f3\u697d\u30d7\u30ec\u30fc\u30e4\u30fc\u306f\u3001\u7406\u8ad6\u7684\u306b\u306f\u3082\u3046\u4e00\u65b9\u306e\u5f62\u5f0f\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-how-can-i-convert-m4a-to-mp3-or-other-files\">M4A\u3092MP3\u307e\u305f\u306f\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p>M4A\u30d5\u30a1\u30a4\u30eb\u306f\u975e\u5e38\u306b\u4e00\u822c\u7684\u3067\u3059\u304c\u3001MP3\u307b\u3069\u4e00\u822c\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001MP3\u30d5\u30a1\u30a4\u30eb\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u521d\u306e\u65b9\u6cd5\u306fiTunes\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u66f2\u304c\u3059\u3067\u306biTunes\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u5225\u306e\u65b9\u6cd5\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u5909\u63db\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5909\u63db\u3059\u308b <a href=\"https:\/\/affiv.com\/ja\/10-best-m4a-to-mp3-converter-%e4%bd%bf%e3%81%84%e3%82%84%e3%81%99%e3%81%84\/\" data-type=\"post\" data-id=\"688\">M4A\u304b\u3089MP3<\/a> iTunes\u3067\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u3066\u304b\u3089\u3001\u300c\u5909\u63db\u300d\u6a5f\u80fd\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>M4A\u3092MP3\u306b\u5909\u63db\u3059\u308b\u3068\u3001iTunes\u306f\u5143\u306eM4A\u3092\u524a\u9664\u305b\u305a\u3001\u4e21\u65b9\u3068\u3082iTunes\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>The <a href=\"https:\/\/affiv.com\/ja\/best-mp4-convertor-%e4%bd%bf%e3%81%84%e3%82%84%e3%81%99%e3%81%84\/\" data-type=\"post\" data-id=\"599\">M4A\u30b3\u30f3\u30d0\u30fc\u30bf\u30fc<\/a> \u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u542b\u307e\u308c\u307e\u3059 <a href=\"https:\/\/www.freemake.com\/free_audio_converter\/\" target=\"_blank\" rel=\"noopener\">Freemake\u30aa\u30fc\u30c7\u30a3\u30aa\u30b3\u30f3\u30d0\u30fc\u30bf<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/www.mediahuman.com\/audio-converter\/\" target=\"_blank\" rel=\"noreferrer noopener\">MediaHuman Audio Converter<\/a>\u3001MP3\u3068\u3057\u3066\u3060\u3051\u3067\u306a\u304f\u3001WAV\u3001M4R\u3001WMA\u3001AIFF\u3001AC3\u3068\u3057\u3066\u3082\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066M4A\u3092MP3\u306b\u5909\u63db\u3067\u304d\u307e\u3059 <a href=\"https:\/\/www.filezigzag.com\/online-converter\" target=\"_blank\" rel=\"noreferrer noopener\">FileZigZag<\/a> \u307e\u305f <a href=\"https:\/\/www.zamzar.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zamzar<\/a> 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class=\"wp-block-heading\" 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