{"id":3678,"date":"2021-04-30T18:26:45","date_gmt":"2021-04-30T18:26:45","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=3678"},"modified":"2021-04-30T18:26:45","modified_gmt":"2021-04-30T18:26:45","slug":"description-of-the-compression-formats-mpeg-2-and-mpeg-4-part-2","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/description-of-the-compression-formats-mpeg-2-and-mpeg-4-part-2\/","title":{"rendered":"Description of the compression formats MPEG-2 and MPEG-4 part 2"},"content":{"rendered":"

Description of the compression formats MPEG-2 and MPEG-4 part 2<\/strong><\/p>\n

\"mpeg\"<\/p>\n

MPEG-4 and HDTV<\/p>\n

\"mpeg\"<\/p>\n

Digital satellite television uses the MPEG-2 format, where at a frame resolution of 720×576 pixels, the information flow is 30 frames \/ sec. it is about 12 Mbit \/ s, in practice, the throughput is about 3 Mbit \/ s. With a standard 54 MHz bandwidth, a single satellite transponder typically supports 18 channels. When transmitting in HDTV, the image resolution is 1920 x 1080 pixels, which is 5 times higher than conventional SD TV, and to transmit an HDTV channel in the MPEG-2 standard, the operator would have to rent almost a third of the transponder .<\/p>\n

The next round in the development of video compression algorithms was the MPEG-4 standard. It was originally intended to stream video in real time over low-speed channels, but it has also found application in digital television.<\/p>\n

Video compression in MPEG-4 format is done in the same way as in MPEG-2. When encoding the original video image, the codec finds and saves the most significant frames, generally those in which the scene changes. Instead of storing intermediate frames, the algorithm processes and saves data about changes in the current frame relative to the previous one, that is, differentially. At the same time, in the image processing process, the codec operates with arbitrarily shaped objects, in contrast to the MPEG-2 format, which could only operate with rectangular areas of the image. As a result, a person moving around the room will be perceived by MPEG-4 as a separate object moving relative to a stationary object – the background.<\/p>\n

The idea behind the MPEG-4 standard is to combine 22 sub-standards from which providers can choose the one that best suits their needs.<\/p>\n

Let’s select the most important sub-standards of them:<\/p>\n

ISO 14496-3 – Audio – A set of codecs for voice and audio compression, including advanced audio coding (AAC)
\nISO 14496-10 – Video: Technically identical Advanced Video Coding (AVC) known as H.264 codec
\nWith the transition of satellite television operators to the DVB-S2 standard and the compression of data in MPEG-4 with the H.264 codec, it was possible to place 8 to 10 HDTV channels on the trunk of a transponder.<\/p>\n","protected":false},"excerpt":{"rendered":"

Description of the compression formats MPEG-2 and MPEG-4 part 2 MPEG-4 and HDTV Digital satellite television uses the MPEG-2 format, where at a frame resolution of 720×576 pixels, the information flow is 30 frames \/ sec. it is about 12 Mbit \/ s, in practice, the throughput is about 3 Mbit \/ s. With a … Continue reading “Description of the compression formats MPEG-2 and MPEG-4 part 2”<\/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":[62055,59739,59749,62068,62062,62059,62060,62061,59741,59744,59742,59743,62064,62071,62077,62254,62070,62255,59758,59757,59759,39306,62081,62078,62080,62256,62086,62084,62259,62087,62083,62258,59780,62085,62069,59788,62067,62066,62257,62065,62089,62092,62105,62082,59774,59794,59750,62093,62094,59789,62054,62057,62052,62056,62058,62100,62099,62101,62098,62095,62096,62097,62102,62090,62091,62260,62103,56899,59800,62106,62110,62107,59801,62108,25517,62109,62112,62111,62113,62053,62114,59802,62117,62116,62115,62119,62118,62120,59805,59803,59806,59804,59807],"class_list":["post-3678","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-are-dvds-mpeg-2","tag-are-mpeg4-and-mp4-the-same","tag-avi-to-mpeg4","tag-boletim-do-mpeg","tag-can-mpeg-2-be-converted-to-mp4","tag-can-mpeg-play-on-dvd-player","tag-can-mpeg-play-on-iphone","tag-can-mpeg-play-on-tv","tag-can-mpeg4-play-on-dvd-player","tag-can-mpeg4-play-on-tv","tag-can-mpeg4-player-play-mp4","tag-can-windows-play-mpeg-4","tag-do-i-need-mpeg-2-video-extension","tag-does-mpeg-2-have-audio","tag-does-mpeg-have-audio","tag-does-mpeg-play-on-dvd-players","tag-does-mpeg-work-on-mac","tag-does-mpeg-work-on-tv","tag-does-mpeg4-means-mp4","tag-does-mpeg4-play-on-dvd-player","tag-does-mpeg4-play-on-windows","tag-how-mp4-works","tag-how-mpeg-2-works","tag-how-mpeg-compression-works","tag-how-mpeg-dash-works","tag-how-mpeg4-works","tag-is-mpeg-a-video-format","tag-is-mpeg-lossy-or-lossless","tag-is-mpeg-mp4","tag-is-mpeg-streamclip-safe","tag-is-mpeg-the-same-as-mp3","tag-is-mpeg2-the-same-as-mp4","tag-is-mpeg4-the-same-as-mp4","tag-is-png-raster-or-vector","tag-konwerter-mp4-do-mpeg","tag-mpeg-4-was-ist-das","tag-mpeg-do-czego","tag-mpeg-do-mp4","tag-mpeg-how-to-play","tag-mpeg-to-mp3","tag-mpeg-was-designed-for","tag-mpeg-was-ist-das","tag-mpeg-which-type","tag-mpeg2-how-to-play","tag-mpeg4-how-to-open","tag-mpeg4-what-file","tag-tuner-mpeg4-do-telewizora","tag-was-ist-mpeg","tag-was-ist-mpeg-2","tag-was-ist-mpeg-4","tag-what-are-mpeg-4-files","tag-what-are-mpeg-file-extensions","tag-what-are-mpeg-files","tag-what-are-mpeg-2-files","tag-what-are-mpeg1-files","tag-what-does-mpeg-mean","tag-what-is-mpeg-2","tag-what-is-mpeg-compression","tag-what-mpeg-file-format","tag-what-mpeg-stands-for","tag-whats-mpeg-4","tag-whats-mpeg-noise-reduction","tag-when-to-use-mpeg-dash","tag-when-was-jpeg-created","tag-when-was-mpeg-4-released","tag-where-to-buy-mpeg-2","tag-where-to-download-mpeg-movies","tag-where-to-download-mpeg-videos","tag-where-to-open-mpeg4","tag-which-is-better-mpeg-or-mp4","tag-which-is-better-mpeg-or-wmv","tag-which-is-better-mpeg2-or-mpeg4","tag-which-is-better-mpeg4-or-h264","tag-which-is-smaller-mpeg-or-mp4","tag-which-mpeg-format-is-best","tag-which-player-support-mpeg2","tag-who-developed-mpeg","tag-who-invented-mpeg","tag-who-makes-mpeg-streamclip","tag-why-are-mpeg-files-so-big","tag-why-mpeg-wont-play","tag-why-mpeg4-wont-play","tag-why-use-mpeg-dash","tag-why-was-mpeg-formed","tag-why-wont-mpeg-files-play","tag-will-mpeg-play-in-car","tag-will-mpeg-play-on-dvd-player","tag-will-mpeg2-play-on-windows","tag-will-mpeg4-play-on-cd-player","tag-will-mpeg4-play-on-dvd-player","tag-will-mpeg4-play-on-mp3-players","tag-will-mpeg4-play-on-tv","tag-will-mpeg4-play-on-windows"],"yoast_head":"\nDescription of the compression formats MPEG-2 and MPEG-4 part 2 - 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\/description-of-the-compression-formats-mpeg-2-and-mpeg-4-part-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Description of the compression formats MPEG-2 and MPEG-4 part 2 - mp4gain.com\" \/>\n<meta property=\"og:description\" content=\"Description of the compression formats MPEG-2 and MPEG-4 part 2 MPEG-4 and HDTV Digital satellite television uses the MPEG-2 format, where at a frame resolution of 720×576 pixels, the information flow is 30 frames \/ sec. it is about 12 Mbit \/ s, in practice, the throughput is about 3 Mbit \/ s. With a … Continue reading "Description of the compression formats MPEG-2 and MPEG-4 part 2"\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mp4gain.com\/mp4gain\/description-of-the-compression-formats-mpeg-2-and-mpeg-4-part-2\/\" \/>\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=\"2021-04-30T18:26:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn2.iconfinder.com\/data\/icons\/file-formats-51\/66\/file-29-512.png\" \/>\n<meta name=\"author\" content=\"R. Arias\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mp4gain\" \/>\n<meta name=\"twitter:site\" content=\"@mp4gain\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"R. 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Linkedin\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/ricardoariaszorrilla\/\"],\"url\":\"https:\/\/mp4gain.com\/mp4gain\/author\/mp4gain\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Description of the compression formats MPEG-2 and MPEG-4 part 2 - mp4gain.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/mp4gain.com\/mp4gain\/description-of-the-compression-formats-mpeg-2-and-mpeg-4-part-2\/","og_locale":"en_US","og_type":"article","og_title":"Description of the compression formats MPEG-2 and MPEG-4 part 2 - mp4gain.com","og_description":"Description of the compression formats MPEG-2 and MPEG-4 part 2 MPEG-4 and HDTV Digital satellite television uses the MPEG-2 format, where at a frame resolution of 720×576 pixels, the information flow is 30 frames \/ sec. it is about 12 Mbit \/ s, in practice, the throughput is about 3 Mbit \/ s. 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