Kuburitswa kweSVT-AV1 1.5 (Scalable Vhidhiyo Technology AV1) raibhurari ine mashandisirwo eencoder uye decoder yeAV1 vhidhiyo encoding fomati yakaburitswa. Iyo purojekiti yakagadzirwa neIntel yakabatana neNetflix kuti iwane mwero wekuita wakakodzera pane-iyo-inobhururuka vhidhiyo transcoding uye kushandiswa muvhidhiyo-pa-inoda (VOD) masevhisi. Parizvino, budiriro inoitwa pasi peiyo Open Media Alliance (AOMedia), iyo inotarisira kuvandudzwa kweiyo AV1 vhidhiyo encoding fomati. Pakutanga, chirongwa ichi chakagadziridzwa mukati mehurongwa hweOpenVisualCloud purojekiti, iyo zvakare inovandudza SVT-HEVC uye SVT-VP9 encoder. Iyo kodhi inogoverwa pasi peiyo BSD rezinesi.
SVT-AV1 inoda x86_64 processor ine tsigiro yemirairo yeAVX2. Kuti uvhare 10-bit AV1 hova mumhando ye4K, 48 GB ye RAM inodiwa, 1080p 16 GB, 720p 8 GB, 480p 4 GB. Nekuda kwekuoma kwemaalgorithms anoshandiswa muAV1, kukodha fomati iyi kunoda zviwanikwa zvakawanda kupfuura mamwe mafomati, izvo zvisingatenderi kushandisa yakajairwa AV1 encoder yechokwadi-nguva transcoding. Semuyenzaniso, stock encoder kubva kuAV1 project inoda 5721, 5869, uye 658 times more computation pane x264 (main profile), x264 (high profile) uye libvpx-vp9 encoders.
Pakati pekuchinja mukuburitswa kweSVT-AV1 kutsva:
- Kugadziridzwa kwemhando / nekukurumidza kutengesa-offs kwakaitwa, semhedzisiro iyo presets M1-M5 yakakwidziridzwa ne15-30%, uye presets M6-M13 ne1-3%.
- Iyo itsva MR preset (-preset -1) yakawedzerwa iyo inopihwa sekupa referensi mhando.
- Optimization ye presets M8-M13 mune yakaderera latency encoding mode.
- Yakawedzerwa tsigiro yekusarudzika ine simba ye "miniGOP" (Boka reMifananidzo) shandura mafambiro ekufanotaura kwezvisina kurongeka zvekuwana zvigadziriso zvinogoneswa nekusarudzika mune preset kusvika uye kusanganisira M9. Izvo zvakare zvinogoneka kutsanangura diki miniGOP yekutanga saizi kuti ikurumidze kurodha.
- Yakawedzera kugona kushandura lambda kuyera zvinhu pamutsara wekuraira.
- Yakanyorwazve plugin ye gstreamer.
- Yakawedzera kugona kusvetuka imwe nhamba yemafuremu usati watanga encoding.
- Kuchenesa kwakakosha kweasina kushandiswa akasiyana uye static mabasa akaitwa, makomendi mukodhi akagadziridzwa. Ukuru hwemazita akasiyana-siyana hwakaderedzwa kuita kuti kodhi ive nyore kuverenga.
Source: opennet.ru