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 AVI fayiloli
MP4 zuwa AVI Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake canza alamun shafi na MP4 zuwa AVI ba tare da rasa inganci ba?
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Upload the MP4 file and our converter applies a CRF-based re-encode targeting visually-lossless AVI output (CRF 18 by default, lower = larger / higher quality). The codec is chosen to match the AVI container — H.264 / H.265 / VP9 / AV1 as appropriate.
Mene ne codec da fitarwa AVI take amfani dashi?
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Yana dogara da abin da yake ciki. MP4 na da diff zuwa H.264 (mafi fadin goyon baya ga wasa); MKV na da diff zuwa H.265 don ~50% mafi ƙarancin fayil da ingancin da ya dace; WebM na da diff zuwa VP9 ko AV1 (dabarun watsa yanar gizo mara lasisi). Za ka iya canza zaɓin codec a cikin zaɓuɓɓukan ci gaba kafin AVI canja wurin ya yi aiki.
Shin waƙoƙina na sauti za su iya tsira daga MP4 zuwa AVI?
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Na'am — an sake-muxed sauti idan MP4 da AVI sun raba wani codec na sauti, ko kuma an sake encode shi zuwa AAC / Opus / Vorbis dangane da abin da ƙofar AVI ke goyon baya. An riƙe sauti mai layuka da yawa (fassara, yarukan dabam) cikin ƙofar da ke goyon baya (MKV, WebM, MP4).
Shin zan iya riƙe ƙimar firam na asali daga MP4 zuwa AVI?
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Da ƙa'idoji, adadin firam bai canja ba (MP4 24fps yana zaune a cikin AVI). Idan kana buƙatar canza shi (misali, 29.97 na cikin- cikin zuwa 30fps na cikin- cikin) zaɓin adadin firam na kula da 3:2 na fitarwa da cire- cikin- cikin cikin tafiyar guda — ba a buƙaci sake- canza- lissafi ba.
Mene ne bambancin girman fayil tsakanin MP4 da AVI?
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Same-codec re-muxes (H.264 a cikin MP4 da AVI) suna samar da girman da ya kusan daidai. Canjin codec na iya juya abubuwa da yawa: H.264 -> H.265 na iya raba fayil a matsayin rabin ingancin gani; H.264 -> VP9 yana da kama da haka; AV1 shine mafi ƙarancin a halin yanzu da farashin lokaci mai sauri na encoding.
Shin fayil ɗin AVI zai iya wasa a kan iPhone / Android / Smart TV?
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MP4 / H.264 yana wasa a duk inda yake. MOV / H.264 yana wasa a kan Apple na'urorin da mafi yawan Smart TVs amma ba a kan Android mafi tsawo. MKV yana buƙatar VLC a kan iOS. WebM yana wasa a cikin masu bincike amma ba mafi yawan Smart TV apps. "Compatibility na'urar" preset a cikin zaɓuɓɓukan ci gaba yana zaɓar mafi aminci codec / jakar don manufarka.
Menene lokacin da ake buƙata don canja fayil na MP4 na awa 1 zuwa AVI?
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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 ɗinmu, don haka MP4 -> AVI na awa 1 zai ƙare cikin minti 18-40; AV1 re-encodes suna 2-3x da sauri.
Mene ne mafi girman ma'aunin da ake goyon baya ga MP4 zuwa AVI?
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Har zuwa 8K (7680x4320) akan Pro. Free an hana shi a 4K bisa ga iyakar girman fayil. An kiyaye metadata na HDR (HDR10, Dolby Vision) inda MP4 da AVI na cikin da codecs suke goyon baya; SDR da ake samu yana zama SDR.
Shin MP4 bidiyo na na sirri ne yayin da AVI ke canjawa?
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Na'am — an yi aiki da fayilolin bidiyo da aka tura a cikin ma'aikata masu tsare-tsarensu kuma an share su cikin mintina bayan kammalawa. Babu nazarin mutum, babu tsare-tsaren da ya wuce taga da aka yi takardun. Ka duba /privacy/.
Ba a cikin mataki guda ba - amfani da /video-trim/ ko /video-cutter/ don kakkabe MP4 farko, sa'an nan ka sanya MP4 -> AVI canji cikin jerin. Kakkabe-sai-canza yana da sauri fiye da sake-saukar da fayil din gaba ɗaya kawai don kakkabe fitarwa.
Me yasa fayil ɗin AVI ya yi duhu idan aka kwatanta da tushen MP4?
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A ko'ina ana amfani da daidaitattun bitrate-too-low. Sake-saukar da MP4 mai tsananin bitrate zuwa AVI mai ƙarancin bitrate a cikin CRF na diff yana ƙunsar hotunan da ke da motsi mai yawa. Ka saukar da CRF zuwa 16-18 (ko kuma ka ƙayyade wani tsayin bitrate na bayyananne) kuma ka sake-run don dawo da inganci.
Shin mai canza MP4 zuwa AVI yana goyon bayan sassaƙan rubutu?
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Na'am — an adana waƙoƙin sunaye-na-ƙasa da aka ƙunsa (mov_text a cikin MP4, SRT / ASS a cikin MKV, WebVTT a cikin WebM) idan ƙunshin MP4 da AVI biyu suna goyon bayan su. Sunaye-na-ƙasa da aka ƙona (hardsub) ana canja su da kansu saboda su ɓangare ne na bayanan piksel.