WMV → JPEG

Sinthani Yanu WMV ku JPEG mafayilo mosavuta

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Kukweza

Momwe mungasinthire WMV ku JPEG

Gawo 1: Kwezani yanu WMV 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 JPEG mafayilo

WMV ku JPEG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingagwiritse ntchito ma frame amodzi kuchokera ku WMV ngati JPEG zithunzi?

Kutsitsa fayilo ya WMV 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 WMV video stream, amasinthidwa kukhala fayilo ya JPEG yosiyana, ndipo imaphatikizidwa ngati ZIP yotsitsa.

Kodi ndi yankho liti lomwe limatuluka JPEG zithunzi zosadziwika?

Kuwala kofanana ndi choyamba WMV: 1080p WMV kumabweretsa 1920x1080 JPEG ma frame, 4K WMV kumabweretsa 3840x2160 JPEG 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 WMV ngati JPEG?

Ndino, koma ganizirani kuchuluka kwa fayilo - 30 fps 1-mphindi WMV imapanga 1,800 JPEG 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 WMV pa mafremu onse lidzapanga ~100,000 JPEG zithunzi.

Kodi JPEG ma frame adzasunga WMV kujambula kwa mtundu?

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

Kodi ndi chiyani chosapanga dzimbiri chosapanga dzimbiri JPEG pa diski?

Kutengera pa resolution ndi JPEG 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 WMV 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 JPEG yosakira imasunga metadata ya EXIF ya kamera?

WMV chonyamula sichimangokhala ndi EXIF pa frame momwe kamera ikugwirira ntchito, kotero mafayilo a JPEG 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 WMV mpaka JPEG?

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

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

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 JPEG pa timestamp. Ndikothandiza kwa thumbnails ya chapter, zithunzi zokhudzana ndi scene, kapena kulenga bokosi la mauthenga kuti lifufutidwe.

Kodi WMV yanga ndi yapadera panthawi yochotsa bokosi?

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

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

Kutalika kwa nthawi yosaoneka bwino kwa motion blur kumayikidwa m'mawu ochokera ku WMV (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 WMV.

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

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 JPEG kutumiza kunja kumapeto kwa chaka chino.

Kodi ndingagwiritse ntchito mafayilo a JPEG opangidwa mwamalonda?

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