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 M4V fayiloli
FLV zuwa M4V Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake encode FLV zuwa M4V 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 M4V (CRF 18 bisa diff, ƙananan kimar = fitaccen fayil / mafi kyawun inganci). An zaɓi codec don ya haɗu da M4V 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 cikin tsari, M4V shi ne MP4 — H.264 ko HEVC tare da AAC — tare da zaɓaɓɓen Apple FairPlay DRM da iTunes sashe metadata.
Yanzu. FLV ba ta da wata hanyar amfani da sautin-ƙasa-ƙasa, don haka an buɗe sautin-ƙasa ga FLV abun ciki cikin hoton ko kuma an aika da shi kamar fayil na daban. M4V yana da sautin-ƙasa kamar yadda za'a iya zaɓar su a cikin ruwa, don haka bayan canjawa zaka iya haɗa wata hanyar SRT da mai kallo zai iya kunna, kashe ko kuma sake fasalin.
Shin M4V na goyon bayan alamun shafi da FLV ba ta goyon ba?
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Yana yi. M4V na adana sashe kamar metadata na kwandon, don haka za'a iya tafiyar da wani rikodin mai tsawo ta ɓangaren ba tare da rufe wani barar ci gaba ba. FLV ba ta da wurin da za'a saka wannan bayanin ba, don haka idan mai samarwa ya aiko da jerin sashe ya kasance cikin fayil na sidedcar — ba da wannan zuwa mai canja wurin kuma zai rubuta cikin M4V. M4V na riƙe da alamun shafi, zane da shirye-shiryen ƙarya a cikin siffar da shirin ayuka na Apple TV ke tsammani, wanda MP4 na ɗabi'a ke rasa da yawa.
Shin yana da kyau a canja wa FLV da aka riga aka yi zuwa M4V?
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Ga duk abin da kake son kiyayewa, na'am. FLV yana da alaka da wani zamani na baya na kayan aikin bidiyo kuma kayan aikin da ke karanta shi yana faruwa da sauri daga wayoyin hannu, masu bincike da tsarin aiki. Motsa bidiyo zuwa M4V yanzu, yayin da mai decoder mai tsafta ke nan, shi ne bambanci tsakanin wata arshiya da zaka iya buɗewa cikin shekaru goma da wata da ba za ka iya buɗewa ba. Babu wani mai bincike na yanzu, wayar hannu ko TV da zai iya wasa FLV - duk abin da ke cikin wannan kwandon dole ne a motsa shi daga cikinsa domin ya ci gaba da zama mai gani.
Wanne codec na bidiyo ne fitarwa M4V take amfani dashi?
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Yana dogara ga kwandon M4V. 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. M4V ne Apple na daban-daban na MP4, da aka yi amfani da iTunes da Apple TV app ga fina-finai da TV shirye-shirye.
Shin za'a iya canza waƙoƙina na sauti daga FLV zuwa M4V?
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Yanzu. Idan FLV da M4V 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 M4V 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 FLV zuwa M4V?
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A matsayin diff, na'am — 24fps FLV zai zauna 24fps a cikin M4V; 60fps FLV 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 FLV zuwa M4V?
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Re-mux na codec-daidai (FLV H.264 → M4V 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 M4V zai iya wasa a kan iPhone, Android, da Smart TVs?
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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 M4V codec / kwandon don manufarka. DRM-ƙona M4V sayen ba za a iya canjawa da wani abu; kawai unprotected M4V fayiloli ne convertable, da kuma ba Apple 'yan wasan da yawa bukatar da fayil extension rebranded.
Menene lokacin da za'a yi wa canja bidiyo mai awa 1 zuwa FLV zuwa M4V?
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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 FLV → M4V ya ƙare cikin minti 18-40 dangane da daidaita da manufar codec.
Mene ne mafi girman ma'aunin rarraba da ake goyon baya ga FLV zuwa M4V?
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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 M4V containers support it.
Shin FLV bidiyo na na sirri ne yayin canjawa zuwa M4V?
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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.
