Mataki na 1: Loda naka FLV 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 MP4 fayiloli
FLV zuwa MP4 Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake enkoɗa FLV zuwa MP4 ba tare da rasa ingancin bidiyo ba?
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Ka saukar da fayil ɗinka FLV kuma mai canzawa zai yi aiki da wani CRF-da aka gina kan sake-sauya-kodi mai nufin fitarwa mai gani-ba-da-hasara MP4 (CRF 18 bisa diff, ƙananan kimar = fitaccen fayil / mafi kyawun inganci). An zaɓi codec don ya haɗu da MP4 ƙofar — H.264 don MP4 mai girma, H.265 don MKV mai girma, VP9 ga WebM, AV1 ga sabon pipes. FLV na da Sorenson Spark ko H.264 bidiyo tare da MP3 ko AAC sauti, da aka rufe a cikin wani stream format tsara ga RTMP bayarwa. A kusa da kowace MP4 a cikin daji ne H.264 bidiyo da AAC sauti; da kwandon kuma doka da aka riƙe HEVC, AV1 da VP9.
Yanzu. FLV ba ta da wata hanyar amfani da zanen-rubutun-ƙasa ba, don haka an buɗe zanen-rubutun ga FLV abun ciki cikin hoton ko kuma an aika da shi kamar fayil na daban. MP4 yana da zanen-rubutun kamar yadda zanen-rubutun na su na iya zabar ruwa, don haka bayan canjawa zaka iya haɗa wata hanyar SRT da mai kallo zai iya kunnawa, da kashewa ko kuma sake fasalin.
Shin, za a yi wasa da MP4 a cikin wani shafukai idan FLV bai yi ba?
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Yanzu, wannan shi ne dalilin da ya sa aka yi wannan canji. FLV da aka saka cikin wani shafi na yanar gizo yana nuna wani mai wasa da ya karya ko kuma yana tilasta wani saukewa, saboda masu bincike ba su da wani mai decoder don shi. MP4 yana wasa cikin layin ta hanyar ɓangaren bidiyo na HTML5 na asali ba tare da wata ƙara ba da kuma ba tare da wata shirin ayuka na waje ba. MP4 shi ne mafi aminci da yiwuwar isar da manufa - duk wayar hannu, mai bincike, console, mai shiryawa da Smart TV gina a cikin ƙarni na ƙarshe yana wasa da shi ba tare da kayan aikin ƙari ba.
Mene ne codec ɗin bidiyo da fitarwa MP4 take amfani dashi?
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Yana dogara ga abin da ke cikin MP4. MP4 na da diff zuwa H.264 domin mafi fadin goyon baya na wasa a kan wayoyin hannu, na'urorin bincike, da Smart TVs. MKV na da diff zuwa H.265 / HEVC don kusan rabin girman fayil da inganci mai kama da. WebM na da diff zuwa VP9. Zaɓuɓɓukan ci gaba suna nuna zaɓin codec mai bayyananne idan kana buƙatar sake shi. MP4 ne ISO/IEC 14496-14, standardized a cikin 2001 da kuma dauke daga irin QuickTime akwatin zane MOV amfani.
Shin waƙoƙina na sauti za su iya tsira daga canji daga FLV zuwa MP4?
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Na'am. Idan FLV da MP4 suna raba codec na sauti (misal, suna da AAC), za'a sake-muxed sauti ba tare da sake-encode ba - bit-identical. Idan codecs sun bambanta, za'a sake-encode sauti zuwa AAC / Opus / Vorbis dangane da abin da mai riƙe da MP4 ke goyon baya. An kiyaye sauti mai layuka da yawa (waƙoƙin sharhi, yarukan dabam-dabam).
Shin zan iya riƙe ƙimar firam na asali idan na canja FLV zuwa MP4?
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A bisa diff, na'am — 24fps FLV zai zauna 24fps a cikin MP4; 60fps FLV zai zauna 60fps. Idan kana buƙatar canza adadin (misali, interlaced 29.97 → progressive 30, ko 60 → 30 don iyakancewar aikawa), zaɓin adadin firam na kula da 3:2 pulldown, deinterlacing, da kuma haɗe-firam a cikin mataki ɗaya na encoding.
Menene girman fayil ɗin zai canza daga FLV zuwa MP4?
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Re-mux na codec-daidai (FLV H.264 → MP4 H.264 kawai yana canja kwandon): girman da ya fi daidai. Canjin codec na iya sauya sosai: H.264 → H.265 na iya raba fayil zuwa rabinsa da ingancin gani na daidai; VP9 yana da kama da haka; AV1 na yanke wani 20-30% amma yana da sauri wajen encoding.
Shin fayil MP4 zai iya wasa a kan iPhone, Android, da Smart TVs?
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MP4 / H.264 yana wasa a kan kowane na'ura mai zaman kansa. MOV / H.264 yana wasa a kan na'urorin Apple da TVs 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 farko wanda ke zaɓar mafi aminci MP4 codec / kwandon don manufarka. MP4 na goyon bayan wani nau'in rubutu na ƙarshe kawai (mov_text), kuma sauti mai layuka da yawa ba a yarda da shi ba a waje da masu wasa na kwamfyuta.
Menene lokacin da ake buƙata don canja bidiyo mai awa 1 daga FLV zuwa MP4?
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Same-codec re-mux yana kusa da lokaci-da-lokaci — sakan 30 zuwa 60 ga fayil na sa'a 1. Full codec re-encode yana tafiyar da kusan 0.3-0.7x lokacin asali a kan GPU pipeline ɗinmu, don haka sa'a 1 FLV → MP4 ya ƙare cikin minti 18-40 dangane da daidaita da manufar codec.
Mene ne mafi girman ma'ana da ake goyon baya ga FLV zuwa MP4?
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Har 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 FLV and MP4 containers support it.
Shin bidiyo na FLV na sirri ne yayin canjawa zuwa MP4?
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Na'am. An yi amfani da fayilolin bidiyo da aka tura a cikin masu aiki masu tsalle-tsalle, ba a taba ganinsu da wani mutum ba, ba a taba sanya su cikin indiya ba, kuma an share su cikin mintina bayan kammalawa. An yi takardar tagar tsare-tsaren a /privacy/ kuma ba mu wallafa wata takardar koyarwar koyarwar daga masu turawa na masu amfani ba.
Ba a cikin mataki guda ba — amfani da /video-trim/ ko /video-cutter/ don a kwafe farko, sa'an nan kuma a gudanar da FLV → MP4 canji. Tsakanin tsawaita da canja shi ne mafi sauri fiye da sake-sauya-ƙoɗar duk FLV kawai don a rufe bidiyo da ba'a amfani da shi ba.
FLV (Flash Video) ne mai video ganga format ci gaba da Adobe. Ana amfani da shi don yawo da bidiyo ta kan layi kuma ana samun goyan bayan Adobe Flash Player.
