ukukhululwa , isifaki khowudi sefomathi yevidiyo esebenza kakhulu , ΡΠ°Π·Π²ΠΈΠ²Π°Π΅ΠΌΠΎΠ³ΠΎ ΡΠΎΠΎΠ±ΡΠ΅ΡΡΠ²Π°ΠΌΠΈ Xiph ΠΈ Mozilla. ΠΠΎΠ΄ΠΈΡΠΎΠ²ΡΠΈΠΊ Π½Π°ΠΏΠΈΡΠ°Π½ Π½Π° ΡΠ·ΡΠΊΠ΅ Rust ΠΈ ΠΎΡΠ»ΠΈΡΠ°Π΅ΡΡΡ ΠΎΡ ΡΡΠ°Π»ΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ΄ΠΈΡΠΎΠ²ΡΠΈΠΊΠ° libaom Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠΊΠΎΡΠΎΡΡΠΈ ΠΊΠΎΠ΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΡΠΌ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ΠΌ ΠΊ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΠΈ. ΠΠΎΠ΄ ΠΏΡΠΎΠ΅ΠΊΡΠ° phantsi kwelayisensi ye-BSD.
Zonke izinto eziphambili ze-AV1 ziyaxhaswa, kubandakanya nenkxaso
izakhelo ezikhowudiweyo zangaphakathi nangaphandle ( ΠΈ -izakhelo), 64x64 superblocks, 4:2:0, 4:2:2 kunye 4:4:4 i-chroma subsampling, 8-, 10- kunye ne-12-bit ubunzulu bokufaka ikhowudi yombala, i-RDO (i-Rate-distortion optimization) ukugqwetheka kokuphucula, iindlela ezahlukeneyo zokuqikelela utshintsho lwe-interframe kunye nokuchonga uguquko, ukulawula izinga lokuhamba kunye nokubona ukunqunyulwa kwendawo.
Ifomathi ye-AV1 iyabonakala I-H.264 kunye ne-VP9 ngokwezakhono zoxinzelelo, kodwa ngenxa yobunzima bee-algorithms eziphumeza ixesha elininzi lokukhowuda (kwisantya sothungelwano, i-libaom ngamakhulu amaxesha emva kwe-libvpx-vp9, kunye namawaka amaxesha ngasemva kwe-x264).
I-rav1e encoder inikezela ngamanqanaba okusebenza ali-11, awona aphezulu anikezela kufutshane nezantya zokufaka iikhowudi ngexesha lokwenyani. I-encoder ifumaneka zombini njengesixhobo somgca womyalelo kunye nethala leencwadi.
Kwinguqulelo entsha:
- Indlela ekhawulezayo yokufakwa kweekhowudi iyacetywa ;
- Ubungakanani beendibano zokubini buncitshisiwe (kwiqonga le-x86_64/Linux ithala leencwadi lithatha malunga ne-3MB);
- Ixesha leNdibano lincitshiswe malunga ne-14%;
- Yongezwa isihluzi esinemisonto emininzi sokususa izinto zakudala zebhloko kwividiyo (ukucima);
- Kuyilo lwe-x86_64, ukulungiswa okongeziweyo kuye kwaphunyezwa kusetyenziswa imiyalelo ye-SIMD kwaye ukusetyenziswa kwe-auto-vectorization kwandisiwe;
- Inani lemisebenzi yokwabiwa kweememori liye lancitshiswa nge-1/6;
- Kwi-RDO (i-Rate-distortion optimization), ingqiqo yokucinezela ukuphazamiseka kwe-intra-frame iye yaphuculwa;
- Eminye imisebenzi isusiwe ekusebenziseni i-arithmetic yendawo edadayo ukuya kwizibalo ezipheleleyo;
- Umgangatho we-encoding kwinqanaba lesibini lesantya liphuculwe ngu-1-2%;
- isihluzi sengqikelelo yesalathiso sentshukumo entsha (Intra edge);
- Ukhetho olongezelelweyo "-S" (--switch-frame-interval) ukumisela isithuba sokutshintsha phakathi kwezakhelo;
- Inkxaso yokwakha eyongeziweyo yeqonga le-wam32-wasi ().
umthombo: opennet.ru