VOB → BMP

Sinthani Yanu VOB ku BMP mafayilo mosavuta

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Kukweza

Momwe mungasinthire VOB ku BMP

Gawo 1: Kwezani yanu VOB mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa BMP mafayilo

VOB ku BMP Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingapeze bwanji ma frame kuchokera ku VOB kanema ngati BMP zithunzi?

Kutsitsa kwa VOB ndi wosintha amatulutsa chisankho cha frame-extraction: chilichonse cha Nth frame, ma frame a nthawi yoyenera, kapena chiwonetsero chimodzi pa mphindi. Chosankha chilichonse chimasinthidwa ngati fayilo ya BMP ndipo zonse zimaphatikizidwa mu ZIP archive kuti mutsitsa. VOB ndi Video Object wonyamula anapeza mu VIDEO_TS wapamwamba wa aliyense DVD - MPEG-2 pulogalamu mtsinje ndi DVD-osiyana kuyendera deta anawonjezera. BMP ndi Windows Bitmap, raw raster mtundu anamanga mu Windows kuyambira 1985.

N’chifukwa chiyani ma frame anga ochokera m’mabuku ali ndi ma liwiro ozungulira omwe amapita mwa iwo?

Chifukwa cha zomwe zimachokera. VOB zomwe zili ndi zofalitsa ndi DVD zimasunga madera awiri apakati pa chipinda, zomwe zimatha kuwonetsedwa ndi chikwi chachiwiri, ndipo chosatha chosatha chikuwonetsa kuti chimapangidwa mogwirizana ndi chosatha pa chilichonse chomwe chikuyenda. Kukhazikitsa deinterlacing pambuyo potulutsa ndi chilichonse chosatha chimapangidwa kuchokera ku chipinda chokha chosatha chosatha.

Kodi ma subtitle adzawonekera pa BMP ma frame omwe ndimatulutsa?

Sikuti ngati ndi mndandanda wa subtitle wachikhalidwe. A VOB amasunga ma subtitle monga ma stream awo okha ndipo wosewera amawapanga pazithunzi nthawi yosewera, kotero decoded frame yomwe wosintha amalemba ngati BMP ili ndi pixels oyera pansi. Ma subtitle omwe adasungunuka mu kanemayo asanakhale VOB ndi nkhani ina - pomwepo ndi gawo la chithunzicho ndipo chilichonse chopangidwa ndi frame chimasunga iwo.

Kodi ndingatenge imodzi mwa BMP kuchokera ku gawo lililonse la VOB?

Si monga batani limodzi, koma VOB imapangitsa kuti zikhale zosavuta: masamba omarkidwa amasungidwa m'mabokosi monga nthawi yotchedwa, choncho werengani mndandanda wa masamba kuchokera pa fayilo ndi kuika nthawiyo m'malo a nthawi yolemba. Mumapeza BMP imodzi patsamba, m'njira, yomwe ndi njira yodziwika bwino yopanga mathumbnail kwa kujambula kotalika. Mafuta opanda masamba omarkidwa akukupangitsani kusankha mafilimu ndi maso. VOB amateteza zonse DVD payload - multiple angles, multiple audio zinenero ndi subtitle nyimbo zonse kupulumuka m'nyumba yake.

Kodi ndi chiyani chofunikira pa BMP mafayilo?

Kukula kwakukulu kuposa momwe mungayembekezere, chifukwa BMP imasunga ma pixel onse moyenera kuposa kuyerekezera. 1080p imakhalabe pafupi ndi 2-5 MB ndipo 4K imakhalabe pafupi ndi 6-15 MB, kotero kutulutsa kwanthawi yayitali kumawonjezera mwachangu. Izi ndi malonda abwino pamene zithunzi zimatha kutulutsa kuwongolera, ndipo zoyipa pamene zikuyenda mozungulira patsamba la webusaiti. BMP nthawi zambiri amasunga zonse uncompressed pixel mzere ndi ochepa header, chifukwa chake ndi kovuta kwambiri kufotokoza.

Kodi ndi yankho liti lomwe limatuluka pa BMP ya frame yomwe imatulutsidwa?

Kusintha kwachidziwitso chofanana ndi VOB kanema - 1080p VOB imapanga 1920 × 1080 BMP mafayilo; 4K VOB imapanga 3840 × 2160 BMP mafayilo. Pezani ntchito yosintha kukula pambuyo potulutsa ngati mukufuna mathumbnail ochepa kapena masamba amtundu wa media media.

Kodi ndingagwiritse ntchito chilichonse chamatabwa kuchokera ku VOB ngati BMP?

Ndikuvomereza, koma onetsetsani kuti muwerenge fayilo - 30fps 1-mphindi VOB imapanga 1,800 BMP ma frame. Timawapaka m'manja mwa ZIP mwamsanga. Kwa ma clip ochepa, "1 pa mphindi" (60 ma frame) kapena nthawi yoyenera imapatsa zotsatira zoyenera.

Kodi zithunzi zosakira BMP zidzasunga VOB kujambula kwa mtundu?

Ndikoyenera - mtundu umasinthidwa ndi mamatrix omwe amagwiritsa ntchito VOB (BT.709 kwa HD, BT.2020 kwa 4K HDR). Ma HDR amapangidwa ndi SDR pazotulutsa ku BMP chifukwa cha BMP zosiyanasiyana (PNG, JPG) sizingatheke kusungira ma pixels a HDR.

Kodi ndi chiyani kukula kwa fayilo ya chiwonetsero cha BMP chosatsegulidwa?

Kutengera pa resolution ndi BMP codec. 1080p PNG frame ndi 2 mpaka 5 MB; 1080p JPG pa quality-85 ndi 200 mpaka 500 KB; 4K PNG ndi 6 mpaka 15 MB. Pamapeto pake, kutulutsa kwa PNG kwa 10-minute 1080p VOB kumapanga ~ 50 GB pamodzi.

Kodi BMP yosanduka imasunga metadata ya kamera ya EXIF?

Kuyika kwa VOB sikungasungire EXIF pa frame momwe kamera ikugwira ntchito, kotero mafayilo a BMP amatuluka ndi EXIF yopanda pake. Timayika `creation_time` yokhala ndi nthawi yoyambira ya frame kuti muthe kubwezeretsa bundle ndi kujambula.

Kodi nthawi yayitali bwanji kuti mutenge chiwonetsero chazithunzi kuchokera ku VOB kupita ku BMP?

Kutulutsa kwa frame ndi kosavuta - nthawi zambiri 20 mpaka 30% ya nthawi yoyambira pa standard pipeline. 5-mphindi VOB → BMP bundle imatha m'maola pafupifupi mphindi imodzi popanda kusiyana ndi kusiyana kwa frame, chifukwa choletsa ndi BMP encoder, si VOB demuxer.

Kodi ndingagwiritse ntchito ma frame pa nthawi yoyenera mu VOB?

Ndiyo — njira yophunzirira imavomereza mndandanda wa timestamps osiyana ndi koma (mwachitsanzo `00:01:23,00:05:00,00:10:42`) ndipo imapanga fayilo imodzi BMP pa timestamp. Ndi zothandiza kwa thumbnails za chapter, scene reference shots, kapena thumbnailing ya maphunziro ochepa.