{"id":1280,"date":"2020-05-17T18:00:36","date_gmt":"2020-05-17T18:00:36","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=1280"},"modified":"2020-05-17T18:00:36","modified_gmt":"2020-05-17T18:00:36","slug":"what-are-audio-and-video-codecs","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/","title":{"rendered":"What are audio and video codecs?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#What_are_audio_and_video_codecs\" >What are audio and video codecs?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#What_are_audio_and_video_codecs-2\" >What are audio and video codecs?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#Two_compression_techniques\" >Two compression techniques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#The_best_quality\" >The best quality<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"What_are_audio_and_video_codecs\"><\/span>What are audio and video codecs?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Codecs are software or hardware devices that digitally encode and decode (compress) an analog signal.<\/p>\n<p><a href=\"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1281\" src=\"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec.jpg\" alt=\"codec\" width=\"530\" height=\"281\" srcset=\"https:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec.jpg 530w, https:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec-300x159.jpg 300w\" sizes=\"auto, (max-width: 530px) 85vw, 530px\" \/><\/a><\/p>\n<p>It will happen to you that at least once in your life you cannot play a video file like a movie or a piece of music and wonder what the reason for this obstacle is. The bug in the above cases is the program for watching movies and listening to music: it does not have the required codecs.<\/p>\n<p>Audio and video codecs are key elements for the proper functioning of a computer system, even if they are not known to the public. Without a suitable codec, however, computers (or smartphones and video game consoles and even decoders that watch TV at home) would not be able to play music or display pictures from a film. Our ability to relax and watch a movie or listen to the music of our favorite actor or singer depends on the codecs.<\/p>\n<p><a href=\"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/codec.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1282\" src=\"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/codec.gif\" alt=\"codec\" width=\"324\" height=\"219\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_audio_and_video_codecs-2\"><\/span>What are audio and video codecs?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>An acronym for encoder \/ decoder is a codec or software device that converts an analog signal such as the sound wave of a song into a digital data stream. This way, your computer or other computing device can easily play photos, videos and songs. Codecs are also used to reduce the size of audio and video files that result from analog-to-digital conversion. Without compression technology, digital files would be huge and difficult to manage from computers and smartphones.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Two_compression_techniques\"><\/span>Two compression techniques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are two compression techniques: loss and loss. The first system is lossless and the second is lossless. Let&#8217;s take another example. Let&#8217;s say we want to insert analog video with lossy compression: we have a small file, but not exactly good audio and video quality. If we choose the second technique (no loss), the file is &#8220;heavier&#8221;, but has a higher audio and video resolution.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_best_quality\"><\/span>The best quality<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Compression removes some of the elements that make up the video. Lossy compression codecs remove more data than lossless compression codecs. In recent years we have been working to optimize the quality of compression. For example, the new HEVC standard (High Efficiency Video Coding), also called H.265, offers a better ratio of quality to compression. In practice, unlike the old H.264 codec, you can compress more without sacrificing audio and video quality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What are audio and video codecs? Codecs are software or hardware devices that digitally encode and decode (compress) an analog signal. It will happen to you that at least once in your life you cannot play a video file like a movie or a piece of music and wonder what the reason for this obstacle &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;What are audio and video codecs?&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26909],"tags":[31915,31914,31926,31927,31928,31917,31954,31949,31948,31937,31941,31939,31921,31924,31925,31922,31923,31936,31944,31945,31946,31957,31955,31959,27391,31960,26966,31956,31958,31961,31963,31962,31970,31976,31974,31972,31971,31973,31969,31975,31977,31979,31983,31982,31985,31981,31942,31943,27159,31935,31934,31929,31930,31932,31933,31931,31950,31947,31920,31916,31968,31952,31966,31964,31967,31980,31918,31919,17036,31951,31986,31984,31988,31987,31938,31965,31953,31940,31913,31978],"class_list":["post-1280","post","type-post","status-publish","format-standard","hentry","category-codec","tag-about-codec-networks","tag-about-codec-ngo","tag-after-codec","tag-after-codec-crack","tag-after-codec-free-download","tag-all-about-codec","tag-asterisk-change-codec-during-call","tag-audio-codec-download","tag-cccp-codec-down","tag-cinepak-codec-by-radius","tag-cinepak-codec-by-radius-download","tag-cinepak-codec-by-radius-windows-10","tag-codec-after-effects","tag-codec-after-effects-alpha-channel","tag-codec-after-effects-free-download","tag-codec-after-effects-h264","tag-codec-after-effects-mp4","tag-codec-by-zedd","tag-codec-come-funziona","tag-codec-come-si-scrive","tag-codec-down","tag-codec-for-mac","tag-codec-for-mov","tag-codec-for-mov-files","tag-codec-for-mp4","tag-codec-for-powerpoint","tag-codec-for-vlc","tag-codec-for-windows-10","tag-codec-for-youtube","tag-codec-from-microsoft","tag-codec-from-resolve","tag-codec-from-video","tag-codec-in-a-sentence","tag-codec-in-logstash","tag-codec-in-multimedia","tag-codec-in-powerpoint","tag-codec-in-python","tag-codec-in-telecom","tag-codec-in-video","tag-codec-in-voip","tag-codec-inside-mp4","tag-codec-into-video-file","tag-codec-like","tag-codec-lossless","tag-codec-pack-like-k-lite","tag-codec-translate-into-english","tag-codec-used-by-netflix","tag-codec-used-by-youtube","tag-difference-between-codec-and-container","tag-difference-between-codec-and-driver","tag-difference-between-codec-and-dsp","tag-difference-between-codec-and-format","tag-difference-between-codec-and-modem","tag-difference-between-codec-and-wrapper","tag-difference-between-codec-g711-and-g729","tag-difference-between-codec-h-264-and-h-265","tag-down-codec-windows-media-player","tag-download-codec","tag-everything-about-codec","tag-facts-about-codec","tag-get-codec-from-video","tag-h-264-codec-down","tag-heic-codec-from-microsoft","tag-hevc-codec-from-device-manufacturer","tag-hevc-codec-from-microsoft-store","tag-import-codec-into-vlc","tag-info-about-codec","tag-information-about-codec","tag-k-lite-codec","tag-k-lite-codec-down","tag-k-lite-mega-codec-pack","tag-lite-codec-pack","tag-lite-codec-pack-mega","tag-programs-like-codec","tag-psd-codec-by-ardfry-imaging","tag-remove-codec-from-video","tag-sip-change-codec-during-call","tag-unsupported-codec-by-mfvideodecoder-6","tag-what-is-codec","tag-which-codec-inside-mkv"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What are audio and video codecs? - mp4gain.com<\/title>\n<meta name=\"description\" content=\"Codecs are software or hardware devices that digitally encode and decode (compress) an analog signal.It will happen to you that at least once in your life you cannot play a video file like a movie or a piece of music and wonder what the reason for this obstacle is. 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The bug in the above cases is the program for watching movies and listening to music: it does not have the required codecs.","breadcrumb":{"@id":"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#primaryimage","url":"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec.jpg","contentUrl":"http:\/\/mp4gain.com\/mp4gain\/wp-content\/uploads\/2020\/05\/que-es-codec.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/mp4gain.com\/mp4gain\/what-are-audio-and-video-codecs\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/mp4gain.com\/mp4gain\/"},{"@type":"ListItem","position":2,"name":"What are audio and video codecs?"}]},{"@type":"WebSite","@id":"https:\/\/mp4gain.com\/mp4gain\/#website","url":"https:\/\/mp4gain.com\/mp4gain\/","name":"mp4gain.com","description":"Mp4 Gain Official Website","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/mp4gain.com\/mp4gain\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/mp4gain.com\/mp4gain\/#\/schema\/person\/36ffddda9988e565bd4a9013324ce2cc","name":"R. Arias","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/8ca03263e87418cfde07c571c83fa172297ce230085e4f181b9e5f9af745d6be?s=96&d=blank&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/8ca03263e87418cfde07c571c83fa172297ce230085e4f181b9e5f9af745d6be?s=96&d=blank&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/8ca03263e87418cfde07c571c83fa172297ce230085e4f181b9e5f9af745d6be?s=96&d=blank&r=g","caption":"R. Arias"},"description":"R. Arias is the author of this article and has extensive experience for more than 30 years as a recording engineer and audio specialist, as well as more than 20 years of experience creating algorithms related to audio and video. 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