M4V → PNG

Chinja Yako M4V kuti PNG mafaira pasina simba

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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 M4V kuti PNG

Danho 1: Isa yako M4V mafaira uchishandisa bhatani riri pamusoro kana nekudhonza nekudonhedza.

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

Danho rechitatu: Dhawunirodha yako yakashandurwa PNG mafaira

M4V kuti PNG Mibvunzo Inowanzo bvunzwa Nezvekuchinja

Ndinogona sei kubvisa maframes kubva ku M4V video se PNG mapikicha?

Upload the M4V 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. M4V ndiro Apple's chimiro cheMP4, anoshandiswa ne iTunes uye Apple TV app for movies and TV episodes. PNG yakagadzirwa muna 1996 semugadziriso wakasununguka weGIF, uye yaive default lossless image format yewebhu.

Zvinyorwa zvichaonekwa sei mu PNG maframes andinogona kubvisa?

Hapana kana ivo vaive nechokwadi chekutevera. A M4V 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 M4V 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 M4V?

Haisi seimwe bhatani chete, asi M4V 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. M4V inoita kuti nyaya irambe ichiratidza zviratidzo, mavara uye zvinyorwa zvemazita mumhando yeApple TV app inotarisira, iyo MP4 inowanzo shaya.

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 seM4V video - 1080p M4V inogadzira 1920 × 1080 PNG maframes; 4K M4V 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 M4V se PNG?

Ndinoda, asi tarisa nehuwandu hwemafaira - 30fps 1-minute M4V 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 M4V kuumbwa kwevara?

Yeah - color inogadziriswa nematrix iyo iyo M4V 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 M4V inogadzira ~ 50 GB yese.

Chii chinokonzera kuti PNG ichengete EXIF kamera metadata?

Iyo M4V 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 M4V kusvika ku PNG?

Frame kuwedzera kwakanyanya - kazhinji 20 kusvika 30% yenguva yekuburitsa pastandard pipeline. 5-minute M4V → PNG bundle inosvika munguva yenguva yenguva, kunyangwe ichienzaniswa neframe count, nekuti mvura yemvura ndeye PNG encoder, kwete M4V demuxer.

Ndinogona here kubvisa maframes pazviratidzo zvenguva zvakasiyana mu M4V?

Yeah — iyo advanced sarudzo inogamuchira comma-yakasiyana-siyana bhokisi rezvinyorwa zvenguva (e. g. `00:01:23,00:05:00,00:10:42`) uye inogadzira imwe PNG faira panguva. Inokosha kune thumbnails yechitsauko, scene reference shots, kana thumbnailing yenguva refu yekudzidzisa.

M4V

M4V ndiro Apple mhando MP4 kuti anogona kutakura FairPlay DRM, iyo ndiyo yakatidza vamwe vatambi kubva kuvhura.

PNG

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