{"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\/news\/vypusk-svt-av1-3-0-kodirovshhika-dlya-formata-video-av1","title":{"rendered":"L\u00ebshimi i SVT-AV1 3.0, koduesit p\u00ebr formatin e videos AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
\u00cbdh\u00eb puplikuar versioni i bibliotek\u00ebs SVT-AV1 3.0 (Tehnologjia e Videos s\u00eb Zgjerueshme AV1) me implementimet e koduesit dhe dekoduesit t\u00eb formatit t\u00eb kodimit t\u00eb videos AV1, p\u00ebr t\u00eb cilat jan\u00eb p\u00ebrdorur burimet e paralelizmit t\u00eb softuerit t\u00eb pranish\u00ebm n\u00eb CPU-t\u00eb moderne t\u00eb Intel. Projekti \u00ebsht\u00eb krijuar nga Intel n\u00eb partneritet me Netflix me q\u00ebllimin e arrij nj\u00eb nivel performanc\u00eb t\u00eb p\u00ebrshtatsh\u00ebm p\u00ebr rikodimin e videos n\u00eb koh\u00eb reale dhe p\u00ebrdorimin n\u00eb sh\u00ebrbime q\u00eb ofrojn\u00eb video sipas k\u00ebrkes\u00ebs (VOD). Aktualisht, zhvillimi vazhdon n\u00ebn mbik\u00ebqyrjen e aleanc\u00ebs Open Media (AOMedia), e cila mbik\u00ebqyr zhvillimin e formatit t\u00eb kodimit t\u00eb videos AV1. M\u00eb par\u00eb, projekti \u00ebsht\u00eb zhvilluar n\u00eb kuad\u00ebr t\u00eb projektit OpenVisualCloud, i cili gjithashtu zhvillon 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 sistemet x86_64, p\u00ebr t\u00eb cilat aplikohen optimizimet n\u00eb asamble me baz\u00eb instrukcione SIMD (preferohet q\u00eb CPU t\u00eb ket\u00eb mb\u00ebshtetje AVX2, por si minimum \u00ebsht\u00eb e mjaftueshme edhe SS2). K\u00ebrkesa p\u00ebr kujtes\u00eb varet nga numri i b\u00ebrthamave t\u00eb procesorit t\u00eb angazhuara gjat\u00eb kodimit, t\u00eb cilat rregullohen nga opsioni «—lp». P\u00ebr shkak t\u00eb kompleksitetit n\u00eb algoritmet e p\u00ebrdorura n\u00eb AV1, p\u00ebr kodimin e k\u00ebtij formati k\u00ebrkohen ndjesh\u00ebm m\u00eb shum\u00eb burime se p\u00ebr formatet e tjera; p\u00ebr shembull, koduesi standard nga projekti AV1 k\u00ebrkon 5721, 5869 dhe 658 her\u00eb m\u00eb shum\u00eb llogaritje krahasuar me koduesit x264 (profili «main»), x264 (profili «high») dhe libvpx-vp9. <\/p>\n
Nd\u00ebr sh\u00ebmbujt e ndryshimeve n\u00eb versionin e ri t\u00eb SVT-AV1: <\/p>\n
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\u00cbsht\u00eb optimizuar kompromise mes cil\u00ebsis\u00eb dhe shpejt\u00ebsis\u00eb p\u00ebr presetet q\u00eb ofrojn\u00eb nj\u00eb nivel mesatar dhe t\u00eb lart\u00eb cil\u00ebsie. N\u00eb modalitetin «fast-decode 2» p\u00ebr presetet M3-M10, shpejt\u00ebsia \u00ebsht\u00eb rritur me 15-25% teksa ruhet niveli i cil\u00ebsis\u00eb. P\u00ebr presetet M0-M2, niveli i cil\u00ebsis\u00eb \u00ebsht\u00eb rritur me rreth 1% sipas metod\u00ebs BD-Rate (Bjontegaard-Delta).\n
N\u00eb modalitetin «fast-decode 1» krahasuar me «fast-decode 0», numri i cikleve t\u00eb dekodimit \u00ebsht\u00eb arritur t\u00eb reduktohet me rreth 10% me rritjen e humbjeve vet\u00ebm me 1% sipas metrikes BD-Rate.\n
N\u00eb sistemet ARM, jan\u00eb angazhuar optimizime duke p\u00ebrdorur zgjerimet Neon dhe SVE2, t\u00eb cilat kan\u00eb lejuar nj\u00eb rritje t\u00eb performanc\u00ebs s\u00eb kodimit t\u00eb rrjedhave me thell\u00ebsi ngjyre t\u00eb lart\u00eb dhe rezoluta 480p-1080p nga 10-25%.\n
P\u00ebrmir\u00ebsime jan\u00eb transferuar nga forka SVT-AV1-SPY, q\u00eb rrisin perceptimin e cil\u00ebsis\u00eb kur p\u00ebrdoret moda «tune 0».\n
\u00cbsht\u00eb shtuar moda «avif», e cila konsumon m\u00eb pak resurse gjat\u00eb kodimit t\u00eb imazheve statike.\n
Testet unitare jan\u00eb p\u00ebrmir\u00ebsuar p\u00ebr kodin q\u00eb p\u00ebrdor instruksionet Arm Neon dhe SVE2. <\/ul>\n