{"id":201757,"date":"2014-01-13T12:46:00","date_gmt":"2014-01-13T11:46:00","guid":{"rendered":"https:\/\/cms.galaxiemedia.fr\/tomshardware\/2014\/01\/13\/des-blu-ray-de-125-go-pour-la-4k-ultra-hd\/"},"modified":"2018-11-12T11:58:39","modified_gmt":"2018-11-12T10:58:39","slug":"des-blu-ray-de-125-go-pour-la-4k-ultra-hd","status":"publish","type":"post","link":"https:\/\/www.tomshardware.fr\/des-blu-ray-de-125-go-pour-la-4k-ultra-hd\/","title":{"rendered":"Des Blu-ray de 125 Go pour la 4K Ultra HD ?"},"content":{"rendered":"<p><span class=\"imgContent imgRight\"><span class=\"iZoom\"><img alt=\"Image 1 : Des Blu-ray de 125 Go pour la 4K Ultra HD ?\" decoding=\"async\" width=\"200\" height=\"126\" src=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2013\/05\/43790-global-3d-200x126.jpg\" class=\"attachment-purch-200 size-purch-200\" alt=\"\" \/><span class=\"imgCaption\">Un BDXL de 100 Go<\/span><\/span><\/span><\/p>\n<\/p>\n<p>Samsung a annonc\u00e9, au CES, que des Blu-ray adapt\u00e9 aux contenus 4K Ultra HD allaient arriver dans un futur assez proche. Les films seraient propos\u00e9s sur des BDXL, c&#8217;est-\u00e0-dire des disques Blu-ray pouvant contenir 100 ou 128 Go de donn\u00e9es. Ces derniers sont d\u00e9j\u00e0 disponibles pour les ordinateurs de bureau et quelques lecteurs de Blu-ray de salon sont m\u00eame capables de les lire.<\/p>\n<\/p>\n<p>Les BDXL int\u00e8grent 3 ou 4 couches de donn\u00e9es (contre 1 ou 2 avec les Blu-ray classiques), et les couches ont une capacit\u00e9 de stockage un peu plus \u00e9lev\u00e9e que les Blu-ray classiques. Dans les BDXL 3 couches, on a 33 Go par couche (100 Go au total) alors que les versions 4 couches ont une capacit\u00e9 maximale de 128 Go (32 Go par couche). <\/p>\n<\/p>\n<h3>Une question de codec<\/h3>\n<\/p>\n<p>Le principal probl\u00e8me vient du codec qui sera utilis\u00e9. Le H.264, d\u00e9j\u00e0 utilis\u00e9 dans la majorit\u00e9 des Blu-ray, est utilisable pour encoder de la vid\u00e9o en Ultra HD (3 84 x 2 160), mais il est assez peu performant dans cette d\u00e9finition. Il a par contre l&#8217;avantage d&#8217;\u00eatre tr\u00e8s bien support\u00e9 par les puces de d\u00e9codage actuelles. Deux autres codecs sont aussi en lice : le H.265 (HEVC) et le VP9 de Google. Le principal probl\u00e8me, c&#8217;est que les deux codecs, m\u00eame s&#8217;ils ont efficaces, n\u00e9cessitent de nouvelles puces de d\u00e9codage. <\/p>\n<\/p>\n<p>Actuellement, on risque de se retrouver avec les m\u00eames probl\u00e8mes qu&#8217;\u00e0 l&#8217;arriv\u00e9e du Blu-ray et du HD DVD. \u00c0 l&#8217;\u00e9poque, certains lecteurs int\u00e9graient un processeur haut de gamme pour d\u00e9coder la vid\u00e9o (Toshiba utilisait des Pentium 4 dans certains lecteurs), ce qui posait des probl\u00e8mes de consommation, de bruit et de performances. De m\u00eame, les premiers Blu-ray n&#8217;utilisaient pas le H.264 mais bien le MPEG2, peu adapt\u00e9 aux vid\u00e9os en FullHD, et les premiers films sortis en Blu-ray sont donc assez perfectibles actuellement&#8230;<\/p>\n<\/p>\n<p>Dans la pratique, il va falloir attendre la fin de l&#8217;ann\u00e9e pour avoir le fin mot de l&#8217;histoire, mais nous sommes certains d&#8217;une chose : il va falloir tout racheter&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Samsung a annonc\u00e9, au CES, que des Blu-ray adapt\u00e9 aux contenus 4K Ultra HD allaient arriver dans un futur assez proche.<\/p>","protected":false},"author":36,"featured_media":175813,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[487],"tags":[514],"hubs":[],"class_list":["post-201757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","tag-samsung"],"acf":{"post_show_excerpt":false,"post_source":{"title":"The Australian","url":"http:\/\/www.theaustralian.com.au\/technology\/special-reports\/samsung-says-125-gigabyte-bluray-disks-are-on-the-way\/story-fnkygzoc-1226797125793","target":""}},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v23.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Des Blu-ray de 125 Go pour la 4K Ultra HD ?<\/title>\n<meta name=\"description\" content=\"Samsung a annonc\u00e9, au CES, que des Blu-ray adapt\u00e9 aux contenus 4K Ultra HD allaient arriver dans 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