{"id":119991,"date":"2024-09-30T21:21:06","date_gmt":"2024-09-30T19:21:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-multimedia-paketa-ffmpeg-7-1"},"modified":"2024-09-30T21:21:06","modified_gmt":"2024-09-30T19:21:06","slug":"vypusk-multimedia-paketa-ffmpeg-7-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-multimedia-paketa-ffmpeg-7-1","title":{"rendered":"Utgivning av multimediapaketet FFmpeg 7.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter sex m\u00e5naders utveckling \u00e4r multimedia-paketet FFmpeg 7.1 tillg\u00e4ngligt, som inneh\u00e5ller en upps\u00e4ttning applikationer och ett bibliotek f\u00f6r operationer med olika multimediaformat (inspelning, konvertering och dekodning av ljud- och videoformat). Paketet \u00e4r skrivet i C och distribueras under licenserna LGPL och GPL.            <\/p>\n<p>Bland \u00e4ndringarna i FFmpeg 7.1:   <\/p>\n<ul>\n<li class=\"l\"> Videokodare f\u00f6r format som H.264 och H.265 har lagts till, som anv\u00e4nder Vulkan-grafik-API:ets till\u00e4gg f\u00f6r h\u00e5rdvaruaccelerering av videokodning. Vad g\u00e4ller funktionalitet \u00e4r kodarna baserade p\u00e5 Vulkan identiska med de tidigare tillg\u00e4ngliga kodarna, som anv\u00e4nde VAAPI f\u00f6r acceleration.\n<li class=\"l\"> Det inneh\u00e5ller en egen dekoder f\u00f6r ljudkodningsformatet xHE-AAC (st\u00f6djer en delm\u00e4ngd av AAC USAC), som anv\u00e4nds i Netflix streaming och \u00e4r involverad i Digital Radio Mondiale-teknologier. Codec \u00e4r anm\u00e4rkningsv\u00e4rt f\u00f6r att st\u00f6dja ett brett utbud av bithastigheter (fr\u00e5n 12 till 300 kbit\/s), h\u00f6g komprimering, medel f\u00f6r uppspelning med konstant volym, h\u00f6g klarhet vid alla volym niv\u00e5er, kompletterande profiler f\u00f6r dynamisk omf\u00e5ngshantering vid lyssning i bullriga milj\u00f6er och metadata som g\u00f6r det m\u00f6jligt att \u00e5terst\u00e4lla f\u00f6rluster p\u00e5 mottagarens sida.\n<li class=\"l\"> En stabil implementation av dekodern f\u00f6r VVC-formatet (Versatile Video Coding), \u00e4ven k\u00e4nd som H.266 videokomprimeringsstandard, har meddelats. Denna standard har utvecklats gemensamt av MPEG (ISO\/IEC JTC 1) och VCEG (ITU-T), med deltagande av f\u00f6retag som Apple, Ericsson, Intel, Huawei, Microsoft, Qualcomm och Sony. H.266 ers\u00e4tter H.265 (HEVC) och m\u00f6jligg\u00f6r h\u00f6g effektivitet i \u00f6verf\u00f6ring och lagring av alla sk\u00e4rmuppl\u00f6sningar (fr\u00e5n SD och HD till 4K och 8K), st\u00f6djer video med ut\u00f6kat dynamiskt omf\u00e5ng (HDR, High Dynamic Range) och panoramavideo i 360 grader.\n<li class=\"l\"> M\u00f6jligheten till h\u00e5rdvaruaccelererad dekodning av VVC har lagts till, med hj\u00e4lp av Intel QSV (Quick Sync Video) teknik.\n<li class=\"l\"> En VVC-kodare har lagts till, implementerad genom anv\u00e4ndning av biblioteket libvvenc.\n<li class=\"l\"> M\u00f6jligheten f\u00f6r dekodning av video i MV-HEVC-formatet (Multiview High Efficiency Video Coding), som anv\u00e4nds i virtual reality-headsets och smartphones f\u00f6r \u00f6verf\u00f6ring av stereoskopisk video, har implementerats.\n<li class=\"l\"> En dekoder f\u00f6r video kodningsstandarden LCEVC har lagts till, implementerad med hj\u00e4lp av det externa biblioteket LCEVCdec. LCEVC l\u00e4gger till ett extra lager med metadata f\u00f6r att f\u00f6rb\u00e4ttra kvaliteten p\u00e5 redan befintliga codec H.26x och MP4\/ISOBMFF.\n<li class=\"l\"> I mediakontainermuxarna Matroska och MP4\/MOV har parsning och skrivning av metadata med information om videoklipps besk\u00e4rning implementerats (t.ex. n\u00e4r de visas p\u00e5 sk\u00e4rmar med ett annat bildf\u00f6rh\u00e5llande).\n<li class=\"l\"> St\u00f6d f\u00f6r kodning och avkodning av ljud i formaten LC3 och LC3plus, optimerade f\u00f6r att \u00f6verf\u00f6ra ljud med minimal f\u00f6rdr\u00f6jning (t.ex. anv\u00e4nds i Bluetooth-h\u00f6rlurar), har lagts till. Implementeringen baseras p\u00e5 det externa biblioteket liblc3. Avkodare och muxare f\u00f6r mediakontainrar f\u00f6r LC3 och LC3plus har lagts till.\n<li class=\"l\"> St\u00f6d f\u00f6r avkodning av ljud i formaten AAC, AMR-NB, AMR-WB och MP3 har lagts till, med hj\u00e4lp av API:et MediaCodec som tillhandah\u00e5lls av Android-plattformen.\n<li class=\"l\"> En D3D12VA HEVC-kodare har lagts till, vilket implementerar h\u00e5rdvaruacceleration via API:et D3D12.\n<li class=\"l\"> En avkodare f\u00f6r undertexter i formatet RCWT (Raw Captions with Time) har lagts till.\n<li class=\"l\"> St\u00f6det f\u00f6r DEC Alpha DSP har upph\u00f6rt.\n<li class=\"l\"> En videosource som genererar Perlin-brus har lagts till.\n<li class=\"l\"> F\u00f6r codec och filter har en process f\u00f6r samordning av f\u00e4rgrymden YUV implementerats.\n<li class=\"l\"> Filtren pad_vaapi och drawbox_vaapi har lagts till f\u00f6r att l\u00e4gga till marginaler och ramar till videon.      <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61961\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043c\u0443\u043b\u044c\u0442\u0438\u043c\u0435\u0434\u0438\u0430-\u043f\u0430\u043a\u0435\u0442 FFmpeg 7.1, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0439 \u043d\u0430\u0431\u043e\u0440 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a \u0434\u043b\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u043d\u0430\u0434 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u043c\u0438 \u043c\u0443\u043b\u044c\u0442\u0438\u043c\u0435\u0434\u0438\u0430-\u0444\u043e\u0440\u043c\u0430\u0442\u0430\u043c\u0438 (\u0437\u0430\u043f\u0438\u0441\u044c, \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0437\u0432\u0443\u043a\u043e\u0432\u044b\u0445 \u0438 \u0432\u0438\u0434\u0435\u043e\u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0432). \u041f\u0430\u043a\u0435\u0442 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044f\u043c\u0438 LGPL \u0438 GPL. \u0421\u0440\u0435\u0434\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 FFmpeg 7.1: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0438 \u0432\u0438\u0434\u0435\u043e \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0430\u0445 H.264 \u0438 H.265, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e API [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-119991","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 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