Mataki na 1: Loda naka WMV 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
WMV zuwa TIFF Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan fitar da firam daga bidiyo WMV kamar TIFF hotuna?
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Ka shigar da fayil WMV kuma mai maida zai nuna mai zaɓar fitar da firam: kowace firam ta Nth, firam a lokacin da aka ƙayyade, ko firam ɗaya a kowane sakan. An ƙoɗa kowace firam da aka zaɓa a matsayin fayil na daban TIFF kuma an haɗa ta a matsayin arshi ZIP don saukewa.
A wane ma'aunin haske ne zane TIFF da aka fitar zai fito?
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Ma'ana ɗaya kamar bidiyo WMV — ma'ana 1080p na samar da 1920×1080 TIFF firam; ma'ana 4K na samar da 3840×2160 TIFF firam. Yi amfani da /resize-image/ bayan cirewa idan kana buƙatar ƙananan thumbnails ko kuma kayan aiki masu girman kafofin watsa labaru.
Shin zan iya fitar da kowace firam daga fayil WMV kamar TIFF?
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Na'am, amma ka yi hankali da adadin fayiloli - bidiyo mai minti 1 da 30 fps zai samar da firam 1,800, kuma bidiyo mai minti 10 da 60 fps zai samar da 36,000. Muna sanya su cikin ZIP ta atomatik. Don bidiyo mai tsawo ka yi amfani da zaɓin "1 a kowace sakan" ko kuma wasu lokaci-da-lokaci don a iya kula da shi.
Shin TIFF hotunan za su kiyaye WMV sakamako na launin?
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Na'am — an canza launi da ma'adinai guda biyu da ma'aikacin ke amfani da su (BT.709 ga HD, BT.2020 ga 4K HDR). An yi ma'aikacin HDR da ma'aikacin SDR lokacin da ake fitarwa zuwa TIFF (PNG / JPG ba za su iya adana yankuna na piksel na HDR ba); ma'aikacin mpv / ffmpeg na amfani da ma'aikacin ma'aikacin.
Mene ne girman fayil na firam TIFF da aka fitar?
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Yana dogara da daidaito da manufa. Firam na 1080p PNG yana da 2-5 MB; firam na 1080p JPG a inganci-85 yana da 200-500 KB; firam na 1080p WebP a inganci-85 yana da 100-300 KB. Ka riƙa ƙidaya da ƙididdigar firam don girman ZIP — fitarwa na kowane firam na bidiyo na minti 10 1080p kamar PNG yana da ~50 GB.
Shin an fitar da TIFF yana da wani metadata na kamara?
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Mai riƙe WMV ba ya adana EXIF na kowane firam kamar yadda kamara mai tsayawa take yi, don haka fayilolin da aka fitar 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 tarihin bayan saukewa.
Da yawa lokaci ake buƙata don fitar da firam daga WMV zuwa TIFF?
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Frame extraction is fast — typically 20-30% of source duration on the standard pipeline. A 5-minute WMV → TIFF bundle finishes in about a minute regardless of frame count, because the bottleneck is the TIFF encoder, not the demuxer.
Shin zan iya fitar da firam a cikin wani lokaci na musamman cikin bidiyo WMV?
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Na'am — zaɓin cigaba yana karɓar jerin lokaci-da-kuma-da-bambance-tsaye na lokaci-da-kuma-da-bambance (misala `00:01:23,00:05:00,00:10:42`) kuma yana samar da fayil TIFF guda ga kowane lokaci-da-kuma-da-bambance. Yana da amfani ga ƙananan hoton sashe, hoton alamar fili, ko kuma samar da firam na poster ga bidiyo HTML5.
Shin WMV bidiyo na na sirri ne yayin fitar da firam?
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Na'am - irin wannan siffar sirri kamar duk canji. An yi aiki da bidiyo mai asali da kuma kwafin firam na fitarwa a cikin ma'aikata masu tsare-tsaren kuma an share su cikin mintina na kammalawa. Ba a nuna wani firam ba ga mai duba mutum.
Me yasa firam ɗin da na fitar TIFF na da duhu?
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Kafin ko da yaushe ana yin motsi na ɓoyayyen daga wurin da aka samo shi (kamera tana motsa lokacin da aka kama firam). Yi kokarin zaɓar lokaci daga wurare masu tsayayye, ko kuma fitar da firam da yawa masu kusa da juna kuma ka zaɓi mafi haske. Bawul ɗin ba ya yin sinteza na haske — don haka, amfani da /upscale/ akan TIFF da aka fitar bayan haka.
Shin wannan kayan aiki na goyon bayan fitar da firam guda ga kowane canji na fuskar gani?
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Ba a cikin gudun farko ba — amfani da zaɓin "1 a kowace sakan" kamar wani kimanin, sa'an nan ka zaɓi firam na canji-na-tafarkin gani. Mai fitar da gano-tafarkin gani (PySceneDetect-equivalent) an ware shi a kan hanyar tafiya.
Shin zan iya amfani da firam ɗin da aka fitar TIFF a cikin kasuwanci?
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Na'am, bisa ga ko wane lasisin da ke kula da abun cikin WMV na asali. Canjin siffar ba ya ƙara wani zargi — ba mu ƙara wata alama ta ruwa ba, ba mu ƙunsa wani binciki ba, kuma ba mu zargi wani lasisin a kan fitarwa TIFF. Bidiyo na al'umma na samar da firam na al'umma; bidiyo na kai na kanka na ci gaba da zama na kai.