Mataki na 1: Loda naka AV1 fayiloli ta amfani da maɓallin da ke sama ko ta hanyar ja da sauke su.
Mataki na 2: Danna maɓallin 'Maida' don fara hira.
Mataki na 3: Sauke fayil ɗin da aka canza WebM fayiloli
AV1 zuwa WebM Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake encode AV1 zuwa WebM ba tare da rasa ingancin bidiyo ba?
+
Ka saukar da fayil ɗinka AV1 kuma mai canzawa zai yi aiki da wani CRF-da aka gina kan sake-sauya-kodi mai nufin fitarwa mai gani-ba-da-hasara WebM (CRF 18 bisa diff, ƙananan kimar = fitaccen fayil / mafi kyawun inganci). An zaɓi codec don ya haɗu da WebM ƙofar — H.264 don MP4 mai girma, H.265 don MKV mai girma, VP9 ga WebM, AV1 ga sabon pipes. AV1 wani codec ne, ba wani kwalba ba — bitstream ɗin na tafiyar da kansa cikin MP4 ko WebM, tare da Opus ko AAC sauti. WebM an yi shi da nufin ya zama mai ƙunci: VP8 ko VP9 bidiyo (AV1 da aka fi amfani da shi a baya) tare da Vorbis ko Opus sauti, da kuma komai na daban.
Ina da AV1 dauke da wasu waƙoƙin sauti - shin za su iya tsira cikin WebM?
+
Ba da aminci ba. AV1 na adana saƙon sauti na daban kamar waƙoƙin farko, amma WebM na goyan baya wa wasa bayan waƙoƙin farko yana da rashin daidaito, don haka mafi yawan masu wasa za su nuna ɗaya kawai. Zaɓi waƙoƙin da kake so a gaskiya kafin ka canja; wasu za'a fi kyau a fitar da su zuwa fayilolinsu na musamman fiye da barinsu cikin wani kwandon da ke ɓoye su. AV1 yana samar da kusan 30% mafi kyau na ƙuntata fiye da H.264 a kan daidaitacce kuma ba ya ɗaukar kuɗin lasisin, wanda shine dalilin da ya sa YouTube da Netflix suka canza shi. WebM ne wani mummunan fit duk inda a waje na wani mai bincike - video edita, na'urorin' na asali gallery da Smart TVs sosai la'akari da shi.
Shin WebM wani mai riƙewa ne ko kuma codec, kuma shin wannan zai canza abin da zan samu?
+
@ action
Wanne codec na bidiyo ne fitarwa WebM take amfani dashi?
+
Yana dogara ga kwandon WebM. MP4 na da ƙa'idodin H.264 domin mafi fadin goyon baya na wasa a kan wayoyin hannu, masu bincike, da Smart TVs. MKV na da ƙa'idodin H.265 / HEVC don kusan rabin girman fayil da inganci mai kama. WebM na da ƙa'idodin VP9. Zaɓuɓɓukan ci gaba suna nuna zaɓin codec mai bayyananne idan kana buƙatar canza shi. WebM ne mai tsanani subset na Matroska da Google ya buga a cikin 2010 musamman don ba HTML5 bidiyo a royalty-free jakar.
Shin za'a iya canza waƙoƙina na sauti daga AV1 zuwa WebM?
+
Yanzu. Idan AV1 da WebM sun raba wani codec na sauti (misala, suna da AAC), za'a sake-muxed sauti ba tare da sake-encoding ba - bit-identical. Idan codecs sun bambanta, za'a sake-encoding sauti zuwa AAC / Opus / Vorbis dangane da abin da ƙuƙuman WebM ke goyon baya. An riƙe sauti na shirye-shirye da yawa (koyarwar, harsuna daban-daban).
Shin zan iya riƙe ƙimar firam na farko idan na canja AV1 zuwa WebM?
+
A matsayin diff, na'am — 24fps AV1 zai zauna 24fps a cikin WebM; 60fps AV1 zai zauna 60fps. Idan kana buƙatar canza adadin (misali, interlaced 29.97 → progressive 30, ko 60 → 30 don haɗe-haɗe), zaɓin adadin firam zai kula da 3:2 pulldown, deinterlacing, da frame-blending a cikin mataki na encoding guda.
Menene girman fayil ɗin da zai canza daga AV1 zuwa WebM?
+
Re-mux na codec-daidai (AV1 H.264 → WebM H.264 kawai yana canja kwandon): kusan girman da ya daidaita. Canjin codec na iya yin tasiri: H.264 → H.265 na iya raba fayil zuwa rabin a matsayin ingancin gani; VP9 yana da daidaituwa; AV1 na yanke wani 20-30% amma yana da sauri wajen encoding.
Shin fayil WebM zai iya wasa a kan iPhone, Android, da Smart TVs?
+
MP4 / H.264 yana wasa da asali akan kowane na'ura mai zamani. MOV / H.264 yana wasa a kan na'urorin Apple da yawa TV amma ba koyaushe ba a kan Android na daɗaɗɗen. MKV yana buƙatar VLC akan iOS. WebM shine mai bincike na farko. Zaɓuɓɓukan ci gaba sun haɗa da "haɗin kai na na'ura" da aka ƙayyade da ke zaɓar mafi aminci WebM codec / kwandon don manufarka. WebM yana wasa a cikin kowane mai bincike na yau da kullum ba tare da wata ƙara ba, ba tare da wata kudin lasisi ba, kuma ba tare da wata bayyanar patent ba, wanda ke sa shi ya zama diff ga bidiyo mai shigar da yanar gizo.
Menene lokacin da za'a yi wa canja bidiyo mai awa 1 zuwa AV1 zuwa WebM?
+
Re-mux na codec-daidai yana kusa da lokaci-da-lokaci - sakan 30 zuwa 60 ga fayil na sa'a 1. An sake-encode na codec-da-gaske yana tafiya a kusan 0.3-0.7x lokacin asali a kan GPU pipeline ɗinmu, don haka 1-hour AV1 → WebM ya ƙare cikin minti 18-40 dangane da daidaita da manufar codec.
Mene ne mafi girman ma'aunin rarraba da ake goyon baya ga AV1 zuwa WebM?
+
Zuwa 8K (7680×4320) akan Premium plans. Free conversions are capped at 4K (3840×2160) by the per-file size limit. HDR metadata (HDR10, HDR10+, Dolby Vision when present) is carried through where both AV1 and WebM containers support it.
Shin AV1 bidiyo na na sirri ne yayin canjawa zuwa WebM?
+
Yanzu. An yi amfani da fayilolin bidiyo da aka canza zuwa cikin aiki na musamman, ba a gani ba ta mutum, ba a sanya su cikin indiya ba, kuma an share su cikin mintina na kammalawa. An yi takardar tagar tsarewa a /privacy/ kuma ba mu wallafa wata ƙungiya ta koyarwar daga canzawa daga mai amfani ba.
Ba a cikin mataki guda ba - amfani da /video-trim/ ko /video-cutter/ don a kwance farko, sa'an nan kuma a gudanar da AV1 → WebM canji. Kashe-kashe da canja shi ne mafi sauri fiye da sake-saukar da duk AV1 kawai don a rufe bidiyo da ba'a amfani da shi ba.
AV1 wani buɗaɗɗe ne, tsarin matsi na bidiyo mara sarauta wanda aka ƙera don ingantaccen yawo na bidiyo akan intanet. Yana bayar da ingantaccen matsawa ba tare da lalata ingancin gani ba.
