VOB → PNG

Chinja Yako VOB kuti PNG mafaira pasina simba

Sarudza mafaira ako

kana kudhonza uye kubvisa mafaera ako pano

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Kushandura mafaera zvakasununguka, Pro vashandisi vanogona kushandura zvakawanda zvikuru faira; Kutanga

Kuisa

Maitiro ekushandura VOB kuti PNG

Danho 1: Isa yako VOB mafaira uchishandisa bhatani riri pamusoro kana nekudhonza nekudonhedza.

Danho rechipiri: Dzvanya bhatani rekuti 'Convert' kuti utange kushandura.

Danho rechitatu: Dhawunirodha yako yakashandurwa PNG mafaira

VOB kuti PNG Mibvunzo Inowanzo bvunzwa Nezvekuchinja

Ndinogona sei kubvisa maframes kubva ku VOB video se PNG mapikicha?

Upload the VOB uye mushanduri anopa frame-extraction picker: chero Nth frame, maframes pazvinyorwa zvenguva, kana imwe frame pasecond. Yese yakasarudzwa frame inonyorwa seimwe ye PNG faira uye iyo yakazara seti inounganidzwa muZIP archive yekudhawunirodha. VOB ndiro Video Object chivharo yakawanikwa muVIDEO_TS folder yese DVD - MPEG-2 chirongwa mvura ne DVD-yakazvimirira navigation data akawedzera. PNG yakagadzirwa muna 1996 semugadziriso wakasununguka weGIF, uye yaive default lossless image format yewebhu.

Nei maframes angu akabuda achiwana mativi akavharwa ari pakati pezvimwe?

Nekuti chikonzero chinosvibiswa. VOB zvemukati kubva kubroadcast uye DVD era zvinochengeta maviri epakati-hurefu maindasitiri paframe, akatora makumi maviri nemana eseconds kubva kune imwe, uye achiri kutambanudzwa zvakananga zvinoratidza zvese zvakasvibiswa pamwe chete sekutambanudza pane chero chinhu chakafamba. Kubvumira deinterlacing pamberi pekubvisa uye chero achiri kuvakwa kubva kune imwe yakadzokororwa yakaenderera frame.

Zvinyorwa zvichaonekwa sei mu PNG maframes andinogona kubvisa?

Hapana kana ivo vaive nechokwadi chekutevera. A VOB inochengeta zvinyorwa sezvavo zvemukati uye mutambi anowana iwo pamusoro pechifananidzo panguva yekutamba, saka iyo yakagadziriswa frame iyo mushanduri anonyora kunze se PNG ine mapikicha akachena pasi. Zvinyorwa zvakavharwa muvideo mushure mekunge zvave VOB ndezvezvinhu zvakasiyana - panguva iyoyo ivo vanoita chikamu chemufananidzo uye chero frame yakagadzirwa inochengeta iwo.

Ndinogona here kubvisa imwe PNG kubva kune yega yega chikamu che VOB?

Haisi seimwe bhatani chete, asi VOB inoita kuti zvive nyore: mapepa enyaya anochengetwa mubhokisi sezvavanonzi timestamps, saka ona mapepa enyaya kubva ku file uye pedza mapepa enguva mu field ye timestamp. Unogona kuwana PNG ebhuku rimwe nerimwe, munguva, iyo ndiyo nzira yakanakisisa yekuvaka thumbnails yenguva refu yekurekodha. Izvo zvinongedzo zvisina mapepa enyaya zvinokusiya uchitora mapikicha neziso. VOB inochengeta yose DVD payload - akawanda angles, akawanda audio rurimi uye subtitle matracks vese kurarama mukati.

I PNG output inotsigira kuratidzwa?

Format inoita, asi chizvarwa hachina alpha kuti iite — video frame uye rendered peji ndezvisiri-zviviri-zviviri, saka yega yega pixel inosvika yakaoma. Alpha channel ichiri kushandiswa mushure meizvozvo: zvinoreva kuti unogona kubvisa chinhu kubva ku PNG mushure mekunge uchinja format. PNG ndiyo sarudzo yakakodzera yekuvanza skrini, malogo, mavara eline uye chero chinhu chine mativi akaoma kana kuratidzika — hapana kutsvuka, hapana kutambanudza kwevara.

Ndeipi saizi ye PNG mafaera?

Kukura kupfuura zvaunogona kutarisira, nekuti PNG inochengeta yega yega pixel zvakajeka kupfuura kufungidzira. 1080p ichiri kugara pasi pe2-5 MB uye 4K ichiri kugara pasi pe6-15 MB, saka kutamba kwenguva refu kunowedzera nekukurumidza. Iyi ndiyo kutengesa kwakanaka kana mapikicha achidya kuenderera mberi kwekugadzirisa, uye iyo yakaipa kana vachienda kumusoro kune webpage. PNG inoshandisa DEFLATE compression pamusoro pezvinyorwa zvakachena, saka chero pixel inorarama zvakakwana, pamwe neakazara 8-bit alpha channel.

Pazvipi zvinogadziriswa zvinobuda kubva kune imwe neimwe yePNG frame yakagadzirwa?

Iyo imwecheteyo resolution seVOB video - 1080p VOB inogadzira 1920 × 1080 PNG maframes; 4K VOB inogadzira 3840 × 2160 PNG maframes. Usashandisa kushandura saizi yekushandisa mushure mekubvisa kana iwe uchida thumbnails kana social-media-size crops.

Ndinogona kubvisa chero imwe frame kubva ku VOB se PNG?

Ndinoda, asi tarisa nehuwandu hwemafaira - 30fps 1-minute VOB inogadzira 1,800 PNG maframes. Tichazviisa muZIP otomatiki. Kuti uwane mavhidhiyo akareba, sarudzo ye "1 per second" (60 frames) kana mazita enguva anopa mhinduro inonzwisisika.

Idzi PNG mafoto anodzokororwa achachengeta VOB kuumbwa kwevara?

Yeah - color inogadziriswa nematrix iyo iyo VOB source inoshandisa (BT.709 yeHD, BT.2020 ye4K HDR). HDR zviwanikwa zvinowedzerwa kune SDR pakuvakirwa ku PNG nekuti akawanda PNG mafomati (PNG, JPG) haagone kuchengeta HDR pixel marudzi.

Ndeipi saizi yefaira yeimwe yakabuda PNG frame?

Kuenderana ne resolution uye PNG codec. 1080p PNG frame ndeye 2 kusvika 5 MB; 1080p JPG pamhando-85 ndeye 200 kusvika 500 KB; 4K PNG ndeye 6 kusvika 15 MB. Panguva yekupedzisira, chero-frame PNG yekubvisa kwe10-minute 1080p VOB inogadzira ~ 50 GB yese.

Chii chinokonzera kuti PNG ichengete EXIF kamera metadata?

Iyo VOB yekuchengetera haichengeti EXIF yeframe-per-frame sezvaiita kamera, saka mafaera ePNG anobuda neEXIF yakasununguka. Isu tinoisa `creation_time` nzvimbo inotarisa panzvimbo yenguva yechizvarwa cheframe kuitira kuti ugone kudzokorora kurodha bhokisi nekugadzirisa.

Ndeipi nguva yekutora kweframe kubva ku VOB kusvika ku PNG?

Frame kuwedzera kwakanyanya - kazhinji 20 kusvika 30% yenguva yekuburitsa pastandard pipeline. 5-minute VOB → PNG bundle inosvika munguva yenguva yenguva, kunyangwe ichienzaniswa neframe count, nekuti mvura yemvura ndeye PNG encoder, kwete VOB demuxer.

VOB

VOB ndicho chikonzero paDVD, kuchengeta MPEG-2 video, audio, uye subtitles, uye inogona kunyorwa.

PNG

Mafaira ePNG anotsigira kujeka uye anoshandisa kudzvanywa pasina kurasikirwa, zvichiita kuti akwanise kushandiswa pamifananidzo, malogo, uye mapikicha.