MP4 → AV1

Sinthani Yanu MP4 ku AV1 mafayilo mosavuta

Sankhani mafayilo anu

kapena dinani ndi kuchotsani mafayilo anu apa

Free plan: 1 Kusinthana kwa maola · Go Unlimited →

Sinthani mafayilo okwana 1 GB kwaulere, ogwiritsa ntchito Pro amatha kusintha mafayilo okwana 100 GB; Lowani tsopano

Kukweza

Momwe mungasinthire MP4 ku AV1

Gawo 1: Kwezani yanu MP4 mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa AV1 mafayilo

MP4 ku AV1 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji MP4 kupita ku AV1 popanda kubwezeretsa kanema wa kanema?

Ngati ma kontena a MP4 ndi AV1 angagwiritse ntchito codec yomweyo (H.264, H.265, VP9, AV1), wosintha amabwerera ku remuxer: ma streams oyamba amakopedwa ndi byte-by-byte ku AV1 kontena ndipo amasintha kokha. Remux ya 1 GB MP4 ku AV1 nthawi zambiri imatha m'masekondi a 5-15 ndi kuwonongeka kwabwino. Zikuoneka kuti pafupifupi aliyense MP4 m'munda ndi H.264 kanema ndi AAC audio; chidebenso mwalamulo ali HEVC, AV1 ndi VP9. AV1 ndi codec, si kontena - bitstream nthawi zambiri amayenda m'ma MP4 kapena WebM, kugwirizana ndi Opus kapena AAC audio.

Kodi AV1 angagwiritse ntchito nyimbo zambiri kuposa imodzi?

Ndikoyenera, ndipo ndi chithandizo choyenera pa MP4. AV1 imachita chilichonse cha audio monga chida chabwino kwambiri, choncho mgwirizano wachilankhulo chachikhalidwe, dub ndi woyang'anira woyang'anira amatha kukhala m'fayilo imodzi ndi wosewera yemwe amasintha pakati pawo pazosowa. AV1 amabweretsa pafupifupi 30% yabwino kusamvana kuposa H.264 pa ubwino wofanana ndi kunyamula palibe ndalama latsopano, chifukwa chake YouTube ndi Netflix kunyamula izo.

Kodi AV1 imathandizira masamba olemba omwe MP4 sanachite?

Amachita. AV1 amasunga masamba monga metadata ya kontena, kotero kuti kujambula kwanthawi yayitali kungagwiritsidwe ntchito pogwiritsa ntchito gawo lomwe limatha kusinthidwa pogwiritsa ntchito bar ya progress. MP4 sichingakhalepo kuti ipereke mfundozi, chifukwa chake ngati chiyambi chidatumizidwa ndi mndandanda wa kapitoli, chidapezeka mu fayilo ya sidecar - bweretsani kuti musinthe ndipo chimalemba mu AV1.

Kodi AV1 idzasewera bwino pafoni kapena pa TV?

Sichingakhale choncho. MP4 imasinthidwa ndi silicon yoperekedwa pafoni, ma tablet ndi ma TV, chifukwa chake imasewera popanda kutulutsa batri. AV1 nthawi zambiri imabwerera ku decoding ya mapulogalamu pa hardware yomweyo - kulemera kwa CPU, chipangizo chotentha, ndi ma frame osunthika pa 4K. Kwa chipangizo chofunikira, MP4 ndi chotetezeka chokhalamo. Kodi AV1 ndi yochepa, ndipo decoders ya hardware idawonekera pafoni ndi TV kuyambira 2020 mpaka pano - zida zakale zimabwerera ku decoding ya software yokhala ndi mphamvu.

Kodi AV1 ndi chonyamula kapena codec, ndipo kodi izi zimasintha zomwe ndimapeza?

Izi amasintha zimene kuyembekezera kuchokera kutuluka wapamwamba. Mmodzi wa mbali ya izi kusintha dzina encoding kuposa wrapper, kotero zimene zimabweranso ndi kuti bitstream m'matumba ameneyo amafuna bwino — nthawi zambiri MP4 kapena MKV. Kuwonjezeka kusonyeza m'matumba; codec ndi zimene inali kuika kukula kwa fayilo ndi kumene izo adzasewera.

Kodi ma audio ambiri adzapulumuka kusinthidwa kwa MP4 kupita ku AV1?

Ndikoyenera - zonse zolemba za audio mu MP4 (kuwunika kwa woyang'anira, mabungwe osiyanasiyana, mawu ofotokoza) amasungidwa mu AV1 pamene chikwama chofunikira chimathandizira ma audio ambiri. MKV ndi MOV amayendetsa ma audio osatha; MP4 amathandizira ambiri koma ena osewera a hardware amawona kokha track 1; WebM imatha pa Opus / Vorbis track. AV1 ndi royalty-free video codec Alliance for Open Media anatulutsa mu 2018 monga wotsatira wa VP9.

Kodi ma subtitle amasunga zosunga pamene MP4 amasinthidwa kuti AV1?

Ma subtitle olimba (ma tracks osankhika) amapulumuka pamene AV1 angawagwiritse ntchito: MKV amagwiritsa ntchito SRT, ASS, SSA, PGS, VobSub mwachilengedwe; MP4 amagwiritsa ntchito mov_text (format yosasinthasintha). Kusintha MKV ndi subs a ASS ku MP4 kumawawononga kuti akhale mov_text kapena kuwalemba. Hardsubs (olembana mu kanema) amagwiritsa ntchito ngakhale.

Kodi MP4 mpaka AV1 amasunga masamba olemba / kuyendera kwa DVD?

Metadata ya bokosi limasintha pakati pa MP4 ndi AV1 pamenepo onse awiri amapereka bokosi la atomu (MKV, MP4, MOV). WebM imasunga bokosi m'ma block ogwirizana ndi Matroska, choncho MKV <-> WebM bokosi limayenda molimba. AVI sichimakhala ndi bokosi la spec, choncho kusintha kwa AVI ku AV1 kumabweretsa fayilo yosasinthika ngati simuwonjezera ma markers m'manja.

Kodi ndi chiyani za MKV zowonjezera (fonti, kusindikiza) pamene mukupita MP4 ku AV1?

MKV ndi yokha mainstream yokhala ndi ma fayilo ophatikizidwa (TTF fonts for ASS subs, JPG cover art, fan-translated PDF inserts). Kuchokera ku MP4 kupita ku AV1 kumachotsa ma attachments pamene AV1 si MKV - ma streams elementary amasinthidwa, koma payload ophatikizidwa amakhala m'malo ochokera. Tengani MP4 ngati chitetezo ngati mumatengera ma fonts ophatikizidwa.

Kodi codec yomwe AV1 imagwiritsa ntchito ndi yosasinthika?

Kodiyi ya default imasankhidwa kuti igwirizane ndi AV1 yokhala ndi katundu: MKV imasinthidwa kukhala H.265 (HEVC) kuti ikhale yolimba kwambiri; MP4 imasinthidwa kukhala H.264 kuti ikhale yolimba kwambiri; WebM imasinthidwa kukhala VP9; AVI imagwiritsa ntchito MPEG-4 ASP (DivX / Xvid linage).

Kodi HDR (HDR10, Dolby Vision) imatha bwanji MP4 mpaka AV1?

HDR static metadata (HDR10 mastering display values, max content light level) imatha kupita ku AV1 pamene ma kontena awiri ndi codec osankhidwa amathandizira (HEVC, AV1 mu MKV / MP4). Dolby Vision ndi wolimba kwambiri - DV profile 5 / 7 / 8.1 mu MP4 nthawi zambiri amapulumuka okha ku MKV ndi HEVC; kusinthidwa ku AV1 kontena lomwe silitha kunyamula gawo la DV limatha ku HDR10.

Kodi wosinthira MP4 mpaka AV1 adzasunga kusinthasintha kwa framerate (VFR)?

MKV ndi WebM amalemba ma timestamps a real-frame ndi kuwongolera VFR mwanjira yachibadwa, kotero kuti MP4 VFR imatha kukhala ndi AV1 ya mafomuwa popanda kubwezeretsa. MP4 imasunga nthawi yowonjezerapo koma ena osewera amaganiza kuti CFR; wosintha amatulutsa "kulepheretsa CFR" kuti abwezeretse VFR MP4 ku 24 / 30 / 60 fps AV1 kwa zolinga zosatheka.

MP4

Mtundu wa chidebe cha MP4 ukhoza kusunga makanema, mawu, mawu omasulira, ndi zithunzi mu fayilo imodzi yokhala ndi kukanikiza kwabwino kwambiri.

AV1

AV1 ndi mawonekedwe otseguka, opanda malipiro a kanema opangidwa kuti aziyenda bwino pa intaneti. Amapereka mphamvu yopondereza kwambiri popanda kusokoneza mawonekedwe.