AVI → PNG

Sinthani Yanu AVI ku PNG mafayilo mosavuta

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Momwe mungasinthire AVI ku PNG

Gawo 1: Kwezani yanu AVI 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 PNG mafayilo

AVI ku PNG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingapeze bwanji ma frame kuchokera ku AVI kanema ngati PNG zithunzi?

Kutsitsa kwa AVI 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 PNG ndipo zonse zimaphatikizidwa mu ZIP archive kuti mutsitsa. AVI ndi Microsoft Audio Video Interleave, anayambitsa mu 1992 pamwamba pa RIFF chunk mtundu - imodzi mwa zaka zakale zinyalalabe m'ma circulation. PNG anapangidwa mu 1996 monga patent-free kuchotsa kwa GIF, ndi anayamba webusaiti default lossless chithunzi mtundu.

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

Chifukwa cha zomwe zimachokera. AVI 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 ndingapeze ma frame a PNG osagwiritsa ntchito mawu oyamba?

Ngati AVI siyikuwachotsa, chifukwa AVI siyimakhala ndi ma subtitle omwe angasankhidwe kuti azilepheretse. Chomwe AVI chikusonyeza pazenera ndi pa chithunzicho, choncho ndi pa PNG zonse zomwe zimapangidwa ndi kuchotsa ndipo palibe kukhazikitsa komwe kumachotsa izi pambuyo pake. Ngati pali fayilo ya subtitle yosiyana ndi kanemayo, chotsani kuchokera ku bungwe lomwe limatenga awiriwa mosiyana ndipo ma frame amatuluka moyera. AVI alibe native thandizo kwa codecs zamakono, kusinthasintha frame rate, soft subtitle kapena owona kuposa 4 GB popanda hacks, ndi zake per-chunk overhead bloats fayilo.

Kodi PNG imathandizira kuwala?

Format imagwira ntchito, koma chiyambicho sichimakhala ndi alpha kuti ipereke - ma frame a video ndi masamba opangidwa ndi mawonekedwe owoneka bwino, kotero kuti ma pixel onse amafika molimba. Chingwe cha alpha chimakhala chothandiza pambuyo pake: kumatanthauza kuti mutha kuchotsa chinthu kuchokera ku PNG pambuyo pake popanda kusintha mtundu. PNG ndi kusankha koyenera kwa zithunzi, malogo, line art ndi chilichonse ndi zosalimba mapiko kapena kuwala - palibe kuyimba, palibe kuwala band.

Kodi ndi chiyani chofunikira pa PNG mafayilo?

Kukula kwakukulu kuposa momwe mungayembekezere, chifukwa PNG 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. PNG amagwiritsa ntchito DEFLATE kuchotsa pa scanlines zofiltered, choncho aliyense pixel ali ndi moyo moyenera, kuphatikizapo 8-bit alpha channel.

Kodi fayilo yayikulu kwambiri ya AVI idzatulutsidwa bwino?

Maakaunti aulere amafika pa 100 MB pa fayilo, ndipo AVI mabungwe amagwira ntchito kwambiri chifukwa mtunduwo umabweretsa ndalama zochuluka pazinthu zowonjezera pavidiyo. Premium imatulutsa katundu kwambiri. Ngati fayilo igawidwa m'magawo owerengeka chifukwa cha mtundu wamtundu, tsitsani limodzi ndipo amachitidwa ngati ntchito imodzi.

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

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

Kodi ndingagwiritse ntchito chilichonse chamatabwa kuchokera ku AVI ngati PNG?

Ndikuvomereza, koma onetsetsani kuti muwerenge fayilo - 30fps 1-mphindi AVI imapanga 1,800 PNG 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 PNG zidzasunga AVI kujambula kwa mtundu?

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

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

Kutengera pa resolution ndi PNG 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 AVI kumapanga ~ 50 GB pamodzi.

Kodi PNG yosanduka imasunga metadata ya kamera ya EXIF?

Kuyika kwa AVI sikungasungire EXIF pa frame momwe kamera ikugwira ntchito, kotero mafayilo a PNG 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 AVI kupita ku PNG?

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

AVI

AVI owona angaphatikizapo onse audio ndi video deta, kwambiri anazindikira koma ndi zikuluzikulu kukula kwa fayilo.

PNG

Mafayilo a PNG amathandizira kuwonekera bwino ndipo amagwiritsa ntchito kukanikiza kosataya, zomwe zimapangitsa kuti akhale abwino kwambiri pazithunzi, ma logo, ndi zithunzi.