Mataki na 1: Loda naka VOB 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 TIFF fayiloli
VOB zuwa TIFF Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan fitar da firam daga bidiyo VOB kamar TIFF hotuna?
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Ka shigar da VOB kuma mai maida zai nuna mai zaɓa fitar da firam: kowace firam na Nth, firam a lokacin da aka ƙayyade, ko firam ɗaya a kowane sakan. An ƙoɗa kowace firam da aka zaɓa a matsayin fayil na TIFF kuma an haɗa dukkan ƙungiya cikin wata arhifa ZIP don saukewa. VOB shi ne akwatin Video Object da aka samu a cikin akwatin VIDEO_TS na kowace DVD - wani MPEG-2 shirin shirin da aka ƙara da DVD-na musamman na bayanai na tafiyarwa. TIFF shi ne Format na Fayil na Hoto mai Dauke da Alama daga 1986, kuma shi ne format na scanning, publishing da kuma masana'antu na adana bayanai da aka ƙaddara a kan.
Me ya sa firam ɗin da na fitar da su suna da layuka masu daidaita a cikinsu?
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Saboda tushen yana da haɗewa. VOB abun ciki daga zamanin watsa labarai da DVD yana adana fannoni biyu na tsayi na rabin a kowace firam, an kama su da kashi hamsin na sakan a tsakiyar, kuma wani ɓoyayye da aka rufe ya nuna su biyu sun haɗe tare kamar yadda ake rufewa a kan duk abin da ya motsa. Ka kunna ɓoyayyewa kafin fitarwa kuma kowace ɓoyayyewa za'a gina daga firam na gabaɗaya mai sake ginawa.
Shin za'a nuna sassaƙan rubutu cikin TIFF firam da na fitar?
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Ba idan sun kasance wani irin wando na ƙarshe na gaskiya ba. VOB na riƙe ƙarshen waƙa kamar yadda yake da shi kuma mai wasa yana kwafa su a kan hoton a lokacin wasa, don haka firam ɗin da aka canza shi wanda mai maida ke rubutawa kamar TIFF yana da pixels masu tsafta a ƙasansa. Ƙarshen waƙa da aka buga cikin bidiyo kafin ya zama VOB wani abu ne daban — a wannan lokacin su ne ɓangaren hoton kuma duk firam ɗin da aka fitar yana riƙe su.
Shin fitarwa TIFF tana goyon bayan ɓoyayyiyar haske?
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Wannan sifar tana da, amma mai samarwa ba shi da alfa don ya ba shi — firam ɗin bidiyo da shafuka masu nunawa suna da launi mai launi, don haka duk piksel na zuwa da ƙarfi. Shirin alfa yana da amfani a bayan haka: yana nufin zaka iya yanke wani abu daga TIFF bayan haka ba tare da canja sifar ba. @ action
Mene ne girman fayilolin TIFF?
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Mafi girma fiye da yadda kake tsammani, saboda TIFF yana riƙe duk pixel daidai ba tare da kusantar ba. 1080p na ci gaba da zama a kusa da 2-5 MB kuma 4K yana ci gaba da zama a kusa da 6-15 MB, don haka wani dogon tafiyar da fitarwa na ƙarawa cikin sauri. Wannan shi ne daidai lokacin da hotunan ke ci gaba da sarrafawa, kuma ba daidai ba lokacin da suke tafiya kai tsaye zuwa wani shafi na yanar gizo. TIFF wani akwatin da ya fi codec: zai iya riƙe bayanai ba-da-ƙuƙumi, LZW, ZIP ko har ma JPEG, a har zuwa bita 32 ga kowace hanya, da shafuka da yawa a cikin fayil guda.
A wane ma'aunin haske yake fitowa kowace firam da aka fitar TIFF?
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Ma'aunin daidai kamar VOB bidiyo — 1080p VOB na samar da 1920×1080 TIFF firam; 4K VOB na samar da 3840×2160 TIFF firam. Yi amfani da kayan aikin sake girma bayan fitarwa idan kana so ka yi amfani da hotunan ƙananan ko kuma hotunan da suka fi girma na kafofin watsa labaru.
Shin zan iya fitar da kowace firam daga VOB kamar TIFF?
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Na'am, amma ka yi hankali da adadin fayiloli — 30fps 1-dakika VOB na samar da TIFF firam 1,800. Muna sanya su cikin ZIP ta atomatik. Ga bidiyo mai tsawo, zaɓin "1 a kowace sakan" (60 frame) ko kuma wasu lokaci-da-saita suna ba da sakamakon da za'a iya kula da shi.
Shin TIFF hotunan da aka fitar za su kiyaye VOB na rarraba launin?
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Na'am — an canza launi da matric da wurin VOB ke amfani da shi (BT.709 ga HD, BT.2020 ga 4K HDR). An nuna wurin HDR zuwa SDR a lokacin fitarwa zuwa TIFF saboda mafi yawan TIFF siffofin (PNG, JPG) ba su iya adana yankuna na piksel na HDR ba.
Mene ne girman fayil na firam TIFF da aka fitar?
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Yana dogara da daidaitacce da kuma TIFF codec. Firam na 1080p PNG yana da girman 2 zuwa 5 MB; firam na 1080p JPG mai inganci-85 yana da girman 200 zuwa 500 KB; firam na 4K yana da girman 6 zuwa 15 MB. A mafi girma, fitarwa na PNG na kowane firam na 1080p VOB na minti 10 yana samar da ~50 GB a cikin duka.
Shin an fitar da TIFF yana riƙe da metadata na kamara EXIF?
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Mai riƙe VOB ba ya adana EXIF na kowane firam kamar yadda kamara mai tsayawa take yi, don haka fayilolin TIFF suna fitowa da EXIF maras amfani. Mun ƙunsa wani filin `creation_time` mai nuna zuwa lokacin firam na asali don haka zaka iya sake-sarrafa ƙuƙumma bisa tsari na kamawa.
Da yawa lokaci ake buƙata don fitar da firam daga VOB zuwa TIFF?
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Frame extraction is fast — typically 20 to 30% of source duration on the standard pipeline. A 5-minute VOB → TIFF bundle finishes in about a minute regardless of frame count, because the bottleneck is the TIFF encoder, not the VOB demuxer.
Shin zan iya fitar da firam a cikin VOB?
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Na'am — zaɓin cigaba yana karɓar jerin lokaci-da-kuma-da-bambance-tsaye na lokaci (misal. `00:01:23,00:05:00,00:10:42`) kuma yana samar da fayil TIFF guda ga kowane lokaci. Yana da amfani ga hotunan ƙananan sashe, hotunan alaƙa da fuska, ko kuma hotunan ƙananan waƙoƙi masu tsawo.
