{"id":122071,"date":"2025-02-23T14:22:11","date_gmt":"2025-02-23T12:22:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-svt-av1-3-0-kodirovshhika-dlya-formata-video-av1"},"modified":"2025-02-23T14:22:11","modified_gmt":"2025-02-23T12:22:11","slug":"vypusk-svt-av1-3-0-kodirovshhika-dlya-formata-video-av1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/vypusk-svt-av1-3-0-kodirovshhika-dlya-formata-video-av1","title":{"rendered":"L\u00ebshimi i SVT-AV1 3.0, kodues i formatit t\u00eb videos AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
\u00cbsht\u00eb publikuar versioni 3.0 i bibliotek\u00ebs SVT-AV1 (Teknologjia e Videove t\u00eb Shkallueshme AV1) me zbatime t\u00eb koduesit dhe dekoduesit p\u00ebr formatin e kodimit t\u00eb videove AV1, p\u00ebr t\u00eb cilin shfryt\u00ebzohen burimet e paralelizimit t\u00eb llogaritjeve t\u00eb integruara n\u00eb CPU-t\u00eb moderne Intel. Projekti \u00ebsht\u00eb krijuar nga Intel n\u00eb partneritet me Netflix me q\u00ebllimin p\u00ebr t\u00eb arritur nj\u00eb nivel performance t\u00eb p\u00ebrshtatsh\u00ebm p\u00ebr rikodimin e videove n\u00eb koh\u00eb reale dhe p\u00ebr aplikimin n\u00eb sh\u00ebrbimet q\u00eb ofrojn\u00eb video me k\u00ebrkes\u00eb (VOD). Aktualisht, zhvillimi po kryhet n\u00ebn egid\u00ebn aleanc\u00ebs Open Media (AOMedia), e cila mbik\u00ebqyr zhvillimin e formatit t\u00eb kodimit t\u00eb videove AV1. M\u00eb par\u00eb, projekti ishte zhvilluar n\u00eb kuad\u00ebr t\u00eb projektit OpenVisualCloud, i cili zhvillon gjithashtu koduesit SVT-HEVC dhe SVT-VP9. Kodi shp\u00ebrndahet n\u00ebn licenc\u00ebn BSD. <\/p>\n
SVT-AV1 mund t\u00eb nd\u00ebrtohet p\u00ebr sisteme t\u00eb bazuara n\u00eb \u00e7do arkitektur\u00eb p\u00ebr t\u00eb cilat ka nj\u00eb kompilator q\u00eb mb\u00ebshtet standardin C99, por performanca m\u00eb e mir\u00eb arrihet n\u00eb sisteme x86_64, p\u00ebr t\u00eb cilat p\u00ebrdoren optimizime asamble q\u00eb bazohet n\u00eb instrukcione SIMD (preferohet mb\u00ebshtetje p\u00ebr AVX2 n\u00eb CPU, por si minimum mjafton edhe SS2). Konsumi i memories varet nga numri i b\u00ebrthamave t\u00eb procesorit t\u00eb angazhuara gjat\u00eb kodimit, t\u00eb cilat rregullohen me opsionin «—lp». P\u00ebr shkak t\u00eb kompleksitetit t\u00eb algoritmeve t\u00eb p\u00ebrdorura n\u00eb AV1, kodimi i k\u00ebtij formati k\u00ebrkon ndjesh\u00ebm m\u00eb shum\u00eb burime se formate t\u00eb tjera, p\u00ebr shembull, koduesi standard nga projekti AV1 k\u00ebrkon 5721, 5869 dhe 658 her\u00eb m\u00eb shum\u00eb llogaritje n\u00eb krahasim me koduesit x264 (profili «main»), x264 (profili «high») dhe libvpx-vp9. <\/p>\n
Nd\u00ebr ndryshimet n\u00eb versionin e ri t\u00eb SVT-AV1: <\/p>\n
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Optimizimi i kompromisit midis cil\u00ebsis\u00eb dhe shpejt\u00ebsis\u00eb \u00ebsht\u00eb realizuar p\u00ebr presetet q\u00eb vendosin nj\u00eb nivel t\u00eb mes\u00ebm dhe t\u00eb lart\u00eb cil\u00ebsie. N\u00eb modin «fast-decode 2» p\u00ebr presetet M3-M10, shpejt\u00ebsia u rrit me 15-25% duke mbajtur nivelin e cil\u00ebsis\u00eb. P\u00ebr presetet M0-M2, niveli i cil\u00ebsis\u00eb u rrit rreth 1% duke u vler\u00ebsuar me metod\u00ebn BD-Rate (Bjontegaard-Delta).\n
N\u00eb modin «fast-decode 1», krahasuar me «fast-decode 0», numri i cikleve t\u00eb dekodimit arriti t\u00eb ulet rreth 10% me nj\u00eb rritje t\u00eb humbjeve prej vet\u00ebm 1% sipas metrike BD-Rate.\n
N\u00eb sistemet ARM jan\u00eb p\u00ebrdorur optimizime q\u00eb shfryt\u00ebzojn\u00eb zgjerimet Neon dhe SVE2, duke lejuar nj\u00eb rritje t\u00eb performanc\u00ebs s\u00eb kodimit t\u00eb rrjedhave me thell\u00ebsi ngjyre t\u00eb lart\u00eb dhe rezolucione 480p-1080p nga 10-25%.\n
Jan\u00eb transferuar ndryshime nga forka SVT-AV1-SPY q\u00eb p\u00ebrmir\u00ebsojn\u00eb perceptimin e cil\u00ebsis\u00eb gjat\u00eb p\u00ebrdorimit t\u00eb modit «tune 0».\n