{"id":3959,"date":"2021-08-13T15:47:54","date_gmt":"2021-08-13T15:47:54","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=3959"},"modified":"2021-08-13T15:47:54","modified_gmt":"2021-08-13T15:47:54","slug":"what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1\/","title":{"rendered":"What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1]"},"content":{"rendered":"<p><strong>What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1]<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/blog.hotmart.com\/blog\/2019\/12\/Audio-4.jpg\" alt=\"sample rate\" width=\"491\" height=\"270\" \/><\/p>\n<p>Encode<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.headphonesty.com\/wp-content\/uploads\/2019\/07\/SAMPLES-1100x523.jpg\" alt=\"Sample Rate\" width=\"1100\" height=\"523\" \/><\/p>\n<p>The image quality of Internet videos is almost proportional to the bit rate. However, if the bit rate increases unnecessarily, the file size will increase. &#8220;Keep bit rate low&#8221;, &#8220;Reduce file size&#8221; and &#8220;Reduce load time&#8221; are linked, and there is nothing to say if you can encode in high definition while keeping the bit rate low.<br \/>\nAlso, at the beginning, I wrote that &#8220;image quality is almost proportional to bit rate&#8221;, but I think some of you may have experienced that &#8220;I increased the bit rate and encoded, but I am not satisfied with the quality of the image. &#8220;So, this time, I will explain five points that are often used to do high definition video encoding.<\/p>\n<p>&#8221; Table of Contents &#8221;<\/p>\n<p>Encoding Mechanism<br \/>\nPoint 1: learn a suitable bit rate guideline for resolution<br \/>\nPoint 2: Increase the frame rate if motion is important and lower the frame rate if image quality is important.<br \/>\nPoint 3: insert &#8220;keyframes&#8221; at short intervals for moving images<br \/>\n* You can read the second part (Point 4, Point 5) here.<\/p>\n<p>Encoding Mechanism<br \/>\nFirst, I will briefly explain the encoding mechanism.<br \/>\nAn image is a collection of continuous images (frames), and by changing this in a short time like a flip book, it appears that you are visually moving. Japanese television images are 29.97 frames per second (short for 29.97 fps \/ frame per second) and most movies and animations have a standard of 24 fps. Since a large number of frames are required for video, the amount of data is also huge. Therefore, data compression is indispensable for distributing videos on the Internet.<\/p>\n<p>When coding<\/p>\n<p>&#8220;Prediction in frame&#8221; that compresses data within a frame<br \/>\n&#8220;Prediction between frames&#8221; that compresses data into consecutive frames<br \/>\nInformation is reduced and data is compressed within the range that does not affect the visual sense.<\/p>\n<p>\u25a0 What is in-frame prediction?<br \/>\nThere are various methodologies for data compression, so I will skip the details here, but the basic idea of \u200b\u200bwithin-frame prediction is to divide a frame into small blocks called cells and the colors adjacent to each other in the block. they are the same or similar, they are compressed together.<br \/>\nFor example, if there is information &#8220;blue blue blue blue blue blue blue blue blue blue red red yellow yellow yellow&#8221; in the divided block, the amount of data can be reduced by combining this with &#8220;blue 11, red 2, yellow 3&#8221;. It&#8217;s an image.<\/p>\n<p>An example of data compression in in-frame prediction (image)<\/p>\n<p>\u25a0 What is cross-frame prediction?<br \/>\nHowever, in the case of video with a time axis, the number of frames is large, so there is a limit to the overall weight reduction based solely on the prediction within the frame. On the other hand, in the prediction between frames, based on the idea that &#8220;the contents are similar before and after the consecutive frames&#8221;, the cells that do not change from the previous frame reduce the amount of data by reusing information and the cells that change It becomes data as difference information.<\/p>\n<p>Prediction between frames (image)<\/p>\n<p>From here, I&#8217;ll explain five specific code points.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1] Encode The image quality of Internet videos is almost proportional to the bit rate. However, if the bit rate increases unnecessarily, the file size will increase. &#8220;Keep bit rate low&#8221;, &#8220;Reduce file size&#8221; and &#8220;Reduce load time&#8221; are linked, and &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1]&#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":[1],"tags":[60243,62707,61459,62705,45062,60247,62716,62726,62727,62729,62728,62710,62712,62714,62709,42159,62708,62711,62706,43373,62717,62719,62715,62718,62722,62720,62721,62723,62725,62724,62713,62730],"class_list":["post-3959","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-audio-have-bitrate","tag-bitrate-do-audio","tag-does-audio-bitrate-affect-volume","tag-does-audio-bitrate-matter","tag-hd-audio-bitrate","tag-is-bitrate-audio","tag-is-higher-audio-bitrate-better","tag-was-ist-audio-bitrate","tag-was-ist-die-audio-bitrate","tag-was-ist-die-beste-audio-bitrate","tag-was-ist-eine-gute-audio-bitrate","tag-what-audio-bitrate-does-youtube-use","tag-what-audio-bitrate-is-youtube","tag-what-audio-bitrate-should-i-record-at","tag-what-audio-bitrate-should-i-stream-at","tag-what-audio-bitrate-should-i-use","tag-what-audio-bitrate-should-i-use-obs","tag-what-audio-bitrate-should-i-use-streamlabs","tag-what-does-audio-bitrate-mean","tag-what-does-video-audio-bitrate-mean","tag-what-is-audio-bitrate-and-sample-rate","tag-what-is-audio-bitrate-android","tag-what-is-audio-bitrate-obs","tag-what-is-audio-bitrate-on-youtube","tag-what-should-audio-bitrate-be","tag-what-should-audio-bitrate-be-obs","tag-what-should-audio-bitrate-be-streamlabs","tag-what-should-my-audio-bitrate-be","tag-what-should-my-audio-bitrate-be-for-streaming","tag-what-should-my-audio-bitrate-be-streamlabs","tag-whats-audio-bitrate","tag-which-audio-bitrate-is-best"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1] - mp4gain.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mp4gain.com\/mp4gain\/what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1] - mp4gain.com\" \/>\n<meta property=\"og:description\" content=\"What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1] Encode The image quality of Internet videos is almost proportional to the bit rate. However, if the bit rate increases unnecessarily, the file size will increase. &#8220;Keep bit rate low&#8221;, &#8220;Reduce file size&#8221; and &#8220;Reduce load time&#8221; are linked, and &hellip; Continue reading &quot;What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1]&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mp4gain.com\/mp4gain\/what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1\/\" \/>\n<meta property=\"og:site_name\" content=\"mp4gain.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mp4gain\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-13T15:47:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.hotmart.com\/blog\/2019\/12\/Audio-4.jpg\" \/>\n<meta name=\"author\" content=\"R. 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However, if the bit rate increases unnecessarily, the file size will increase. &#8220;Keep bit rate low&#8221;, &#8220;Reduce file size&#8221; and &#8220;Reduce load time&#8221; are linked, and &hellip; Continue reading \"What is the encryption mechanism? 5 Points to Consider for HD Video Encoding [Part 1]\"","og_url":"https:\/\/mp4gain.com\/mp4gain\/what-is-the-encryption-mechanism-5-points-to-consider-for-hd-video-encoding-part-1\/","og_site_name":"mp4gain.com","article_publisher":"https:\/\/www.facebook.com\/mp4gain","article_published_time":"2021-08-13T15:47:54+00:00","og_image":[{"url":"https:\/\/blog.hotmart.com\/blog\/2019\/12\/Audio-4.jpg","type":"","width":"","height":""}],"author":"R. Arias","twitter_card":"summary_large_image","twitter_creator":"@mp4gain","twitter_site":"@mp4gain","twitter_misc":{"Written by":"R. 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