WebM → PNG

Sinthani Yanu WebM ku PNG mafayilo mosavuta

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Kukweza

Momwe mungasinthire WebM ku PNG

Gawo 1: Kwezani yanu WebM 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

WebM ku PNG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingagwiritse ntchito ma frame amodzi kuchokera ku WebM ngati PNG zithunzi?

Kutsitsa fayilo ya WebM ndi wosinthira amatulutsa chisankho cha frame-extraction: chilichonse cha Nth frame, ma frame panthawi yofunikira, kapena chiwonetsero chimodzi pasecond.Katundu uliwonse wosankhidwa umasunthidwa kuchokera ku WebM video stream, amasinthidwa kukhala fayilo ya PNG yosiyana, ndipo imaphatikizidwa ngati ZIP yotsitsa.

Kodi ndi yankho liti lomwe limatuluka PNG zithunzi zosadziwika?

Kuwala kofanana ndi choyamba WebM: 1080p WebM kumabweretsa 1920x1080 PNG ma frame, 4K WebM kumabweretsa 3840x2160 PNG ma frame. Wosinthayo sasintha kapena kuchepetsa - ma pixels amachokera pa frame yosinthidwa. Musanagwiritse ntchito /resize-image/ ngati mukufuna zithunzi zochepa.

Kodi ndingagwiritse ntchito chilichonse cha WebM ngati PNG?

Ndino, koma ganizirani kuchuluka kwa fayilo - 30 fps 1-mphindi WebM imapanga 1,800 PNG mafremu. Timawapaka m'chigawo chimodzi cha ZIP mwamsanga. Kwa mavidiyo ochepa, yesani "1 pa mphindi" (60 mafremu pa mphindi) kapena kusankha nthawi yoyenera. Ora la WebM pa mafremu onse lidzapanga ~100,000 PNG zithunzi.

Kodi PNG ma frame adzasunga WebM kujambula kwa mtundu?

Ndikoyenera - mtundu umasinthidwa ndi mapangidwe omwewo omwe amapezeka patsamba la WebM (BT.709 kwa HD, BT.2020 kwa 4K HDR). Mafuta a HDR amasinthidwa ku SDR pamene akugwiritsidwa ntchito ku PNG omwe sangathe kusungira ma pixel a HDR mwanjira yachibadwa (JPG, PNG-8).

Kodi ndi chiyani chosapanga dzimbiri chosapanga dzimbiri PNG pa diski?

Kutengera pa resolution ndi PNG codec kusankhidwa: 1080p PNG frame ndi 2-5 MB yopanda kusowa, 1080p JPG pa 85 quality ndi 200-500 KB. Kuwonjezeka kwa mitengo ya frame kuti muchepetse ZIP - pamapeto pake, kutulutsa kwa PNG kwa 10-1080p WebM kwa 10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-1

Kodi PNG yosakira imasunga metadata ya EXIF ya kamera?

WebM chonyamula sichimangokhala ndi EXIF pa frame momwe kamera ikugwirira ntchito, kotero mafayilo a PNG amatuluka ndi ma blocks EXIF opanda pake. Wosintha amagwiritsa ntchito `creation_time` field yomwe imasonyeza nthawi yoyambira ya frame, kuti muthe kubwezeretsa bundle m'njira yoyenera kapena kugwirizana ndi masamba a subtitle / chapter.

Kodi nthawi yayitali bwanji kuti mutenge chiwonetsero cha WebM mpaka PNG?

Kusintha kwa frame ndi kosavuta - nthawi zambiri 20-30% ya nthawi yochokera. 5-mphindi WebM -> PNG bundle imatha m'miphindi 1 popanda kutengera kuti ndi mapazi angati omwe mumasankha, chifukwa chingwe ndi PNG encoder kulemba mafayilo ambiri ochepa mofanana, osati WebM demuxer.

Kodi ndingagwiritse ntchito ma frame panthawi yoyenera m'mavidiyo a WebM?

Ndiyo — njira yowonjezera ya timestamp imavomereza mndandanda wogawidwa ndi koma (mwachitsanzo `00:01:23, 00:05:00, 00:10:42.5`) ndipo imapanga fayilo imodzi PNG pa timestamp. Ndikothandiza kwa thumbnails ya chapter, zithunzi zokhudzana ndi scene, kapena kulenga bokosi la mauthenga kuti lifufutidwe.

Kodi WebM yanga ndi yapadera panthawi yochotsa bokosi?

Yesani - mtundu wofanana wa privacy monga pazosintha zonse. Choyamba WebM ndi PNG chosakira chimachitidwa m'mabungwe osiyana ndi omwe amachotsa m'maola angapo a kumaliza.

Nchifukwa chiyani ma frame a PNG omwe adachotsedwa ndi opanda pake?

Kutalika kwa nthawi yosaoneka bwino kwa motion blur kumayikidwa m'mawu ochokera ku WebM (kamera kapena chinthu chinayenda pamene chithunzicho chidapangidwa). Yesetsani kuchotsa nthawi ya nthawi kuchokera pazithunzi zosasinthasintha, kapena kuchotsa ma frame angapo ozungulira ndikusankha omwe ndi owala kwambiri. Pipeline siyipanga mfundo zomwe sizikupezeka m'mawu ochokera ku WebM.

Kodi wosintha angasankhe chiwonetsero chimodzi pa kusintha kwa zenera mu WebM?

Sichipezeka mu mzere waukulu - kugwiritsa ntchito "1 pasecond" monga kuyerekezera koyamba ndi kujambula kwa maonekedwe a maonekedwe a maonekedwe. Mtundu wosankhidwa wa kuzindikira kwa maonekedwe (wopangidwa ndi ffmpeg select=gt(scene)) uli pa roadmap ndipo udzakhala ndi PNG kutumiza kunja kumapeto kwa chaka chino.

Kodi ndingagwiritse ntchito mafayilo a PNG opangidwa mwamalonda?

Ndikoyenera, malinga ndi lisensi yomwe imayendetsa masamba a WebM. Kusintha kwa mtundu ndi kusintha kwa mtundu - ufulu wa ma copyright pazomwe zili ndi amene ali ndi WebM. Timawonjezera palibe watermark, palibe stamping yophatikizidwa, ndipo sitikufuna chilolezo pa PNG bundle.

WebM

WebM idapangidwira intaneti, imapereka makanema otsatsira kwaulere okhala ndi ma codec a VP8/VP9.

PNG

PNG mafayilo amagwiritsa ntchito kuwala kwazithunzi ndi kuchepetsa kuwala kwazithunzi, zomwe zimawapangitsa kukhala abwino kwa zithunzi, malogo, ndi zithunzi zazithunzi.