Mataki na 1: Loda naka MP4 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
MP4 zuwa WebM Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake canza alamun shafi na MP4 zuwa WebM ba tare da rasa inganci ba?
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Upload your MP4 file and our converter applies a CRF-based re-encode targeting visually-lossless WebM output (CRF 18 by default, lower = larger / higher quality). The codec is chosen to match the WebM container (H.264 / H.265 / VP9 / AV1 as appropriate).
Mene ne kodeki na fitarwa WebM ke amfani da shi?
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Yana dogara ne akan abin da ke ciki. MP4 na da diff zuwa H.264 (mafi fadin goyon baya ga wasa); MKV da WebM na da diff zuwa H.265 da VP9 a kansu domin mafi kyawun ƙuntata a matsayin daidai. Za ka iya canza zaɓin codec a cikin zaɓuɓɓukan ci gaba kafin canjawa.
Shin waƙoƙina na sauti za su iya tsira daga canji daga MP4 zuwa WebM?
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Na'am — an sake-muxed sauti (idan MP4 da WebM sun raba codec na sauti) ko an sake encode shi zuwa AAC / Opus / Vorbis dangane da abin da ke goyon bayan kwandon WebM. An kiyaye sauti mai layuka da yawa (waƙoƙin sharhi, harsuna daban-daban).
Shin zan iya riƙe ƙimar firam na asali idan na canja MP4 zuwa WebM?
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Da ƙa'idoji, adadin firam bai canja ba (MP4 24fps yana zaune 24fps a cikin WebM). Idan kana buƙatar canza shi (misal. interlaced 29.97 → progressive 30fps), ka yi amfani da zaɓin adadin firam, wanda ke kula da 3:2 pulldown da deinterlacing a cikin tafiyar guda.
Mene ne bambancin girman fayil tsakanin MP4 da WebM?
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Re-muxes na codec-daidai (misala MP4 → WebM inda suke amfani da H.264) suna samar da girman da ya fi daidai. Canjin codec na iya sauya girman da yawa: H.264 → H.265 na iya raba fayil a rabinsa da ingancin gani; H.264 → VP9 yana da kama da haka.
Shin fayil WebM zai iya wasa a kan iPhone / Android / Smart TV?
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MP4 / H.264 wasa natively duk inda. MOV / H.264 wasa a kan Apple na'urorin da mafi Smart TVs amma ba a kan Android da ya fi dacewa. MKV bukatar VLC a kan iOS. Advanced zaɓuɓɓuka hada da "na'ura na'ura" preset da ke zaɓar mafi aminci codec / jakar haɗuwa ga na'urar manufa.
Menene lokacin da ake buƙata don canja fayil na MP4 na awa 1 zuwa WebM?
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Yana dogara da canjin codec. Same-codec re-mux: 30-60 seconds (no re-encode). Re-encode zuwa wani codec daban: a kan 0.3-0.7x lokacin asali a kan GPU pipeline, don haka fayil na sa'a 1 zai ƙare cikin minti 18-40.
Mene ne mafi girman ma'aunin da ake goyon baya ga MP4 zuwa WebM?
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Har zuwa 8K (7680×4320) akan Premium. Masu amfani da kyauta ana iyakance su zuwa 4K (3840×2160) bisa iyakar girman fayil. An kiyaye metadata na HDR (HDR10, Dolby Vision) inda MP4 da WebM na cikin akwatin suke goyon baya.
Shin MP4 bidiyo na na sirri ne yayin canjawa?
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Na'am — an yi aiki da fayilolin bidiyo da aka tura a cikin ma'aikata masu tsare-tsaren kuma an share su cikin mintina bayan kammalawa. Ba za mu taba gani, adana, riƙe, ko raba abun ciki ba. Ka duba /privacy/ domin tagan riƙe bayanai na cikakke.
Ba a cikin mataki guda ba — amfani da /video-trim/ ko /video-cutter/ don cirewa kafin canjawa, sa'an nan kuma a sanya mataki na MP4 → WebM cikin jerin. Kashewa da canjawa cikin jerin yana da sauri fiye da sake-saukar da fayil din gaba ɗaya kawai don cirewa.
Me ya sa fayil WebM ya yi duhu / pixelated idan aka kwatanta da wurin asali MP4?
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Kafin kowace lokaci, ana amfani da daidaitattun bitrate-too-low. Sake-saukar da alamun shafi daga bitrate mai girma MP4 zuwa bitrate mai ƙaranci WebM a cikin CRF na diff yana da matukar tashe a cikin wuraren da suke da motsi mai yawa. Ka saukar da CRF zuwa 16-18 (ko ka ƙayyade bitrate mai bayyana) kuma ka sake-rarraba don dawo da inganci.
Shin mai canza MP4 zuwa WebM yana goyon bayan sassaƙan rubutu?
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Na'am — ana kiyaye waƙoƙin sunaye-na-ƙasa da aka yanka (mov_text a cikin MP4, SRT/ASS a cikin MKV) idan ƙofar MP4 da WebM suna goyon bayan su. Sunaye-na-ƙasa da aka yanka (hardsub) ana canja su da kansu saboda su ɓangare ne na firam ɗin bidiyo.