MPEG → FLV

Sinthani Yanu MPEG ku FLV mafayilo mosavuta

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Kukweza

Momwe mungasinthire MPEG ku FLV

Gawo 1: Kwezani yanu MPEG 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 FLV mafayilo

MPEG ku FLV Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji MPEG kupita ku FLV popanda kuwononga mtundu wa kanema?

Ikani fayilo yanu ya MPEG ndipo wosinthira amayendetsa CRF-based re-encode yoyang'anira kutulutsa kwa FLV (CRF 18 mosalekeza, matanthauzo ochepa = fayilo yayikulu / yapamwamba). Codec imasankhidwa kuti igwirizane ndi FLV kontena - H.264 kwa MP4 yokhala ndi kukula kwakukulu, H.265 kwa MKV yokhala ndi kukula kwakukulu, VP9 kwa WebM, AV1 kwa ma pipelines atsopano. Video ndi MPEG-1 kapena MPEG-2 ndi MP2 kapena AC-3 Audio, multiplexed mu mtsinje wopangidwa kuti ayambe kusinthidwa ndi fixed-function hardware. FLV nthawi zambiri ali Sorenson Spark kapena H.264 kanema ndi MP3 kapena AAC audio, wopangidwa mu stream format anapanga kwa RTMP kutumiza.

Mavidiyo anga a MPEG amasonyeza ma liwiro a comb pa msewu - kodi izi zidzabweretsa ku FLV?

Idzachitika ngati simukusintha, ndipo MPEG zolemba nthawi zambiri zimasinthidwa chifukwa mtunduwo umachokera kunthawi ya mafilimu ndi DVD. Ma frame ophatikizidwa amasunga madera awiri apakati omwe amatenga masentimita asanu ndi awiri; pafoni kapena monitor ya progressive-scan yomwe imawerenga ngati chotchinga chozungulira pa chilichonse chomwe chimayenda. Ikani njira yosinthira ndipo encoder imapanga madera onse m'ma frame opitilira muyeso pambuyo polemba FLV. MPEG pano kumatanthauza MPEG-1 kapena MPEG-2 pulogalamu mtsinje, mtundu standardized kwa Video CD ndi kenako kwa DVD ndi kufalitsa TV.

My MPEG ili ndi maudindo ambiri - kodi onse amapita ku FLV?

Sizotsimikizika. MPEG imasunga ma audio ambiri monga ma tracks achiwiri, koma FLV kusewera kuthandizira pambuyo pa gawo loyamba ndilopanda malire, kotero ambiri osewera adzawonetsa imodzi. Sankhani gawo lomwe mukufuna poyamba; ena amaphunzitsidwa bwino ku mafayilo awo oyambirira kuposa kuchoka m'chipinda chokhala ndi ma CD omwe amawateteza. MPEG pulogalamu ma streams ndi decoded ndi literally aliyense DVD wosewera mpira, set-top bokosi ndi kufalitsa mzere kale anamanga, ndipo iwo kulola bit zoipa graciously. No msakatuli watsopano, foni kapena TV angagwiritse ntchito FLV - chilichonse choterobe mu bokosi lachitsulo ayenera kunyamula kunja kwa izo kuti azikhala watchable.

Kodi FLV idzasewera bwino pafoni kapena pa TV?

Sichingakhale choncho. MPEG imasinthidwa ndi silicon yoperekedwa pafoni, ma tablet ndi ma TV, chifukwa chake imasewera popanda kutulutsa batri. FLV nthawi zambiri imabwerera ku decoding ya mapulogalamu pa hardware yomweyo - kulemera kwa CPU, chipangizo chotentha, ndi ma frame osunthika pa 4K. Kwa chipangizo chofunikira, MPEG ndi chotetezeka chokhalamo.

Kodi chimachitika ndi 5.1 surround audio pamene MPEG ikusinthidwa ku FLV?

Idzalowetsedwa ku stereo, chifukwa FLV siyimakhala ndi njira yodalirika ya multichannel. Kulowetsedwa kumagwiritsa ntchito ITU standard coefficients kuti mauthenga m'malo ozungulira azitha kumvetsedwa bwino ndipo ma surrounds amafika pamalo otsika kuposa kugwa. Chomwecho chilichonse chomwe chimadalirika pa malo osiyana a ma channels chidzatha pambuyo pake.

Kodi pali chinthu chosintha pakati pa mafomu awiri oyambirira monga MPEG ndi FLV?

Ngati chinthu chokhacho cha zida chikufunikira kukwaniritsa zolingazo. Mafomu awiriwa amachokera kunthawi yomweyo ya H.264, kotero palibe kusintha komwe kumagula chitetezo, kudalirika kapena kutsimikizika kwatsogolo - kumagula kugwirizana ndi chipangizo chimodzi chokha. Ngati cholinga ndicho kuteteza zithunzi zogwiritsa ntchito nthawi yayitali, kusintha kwa kontena latsopano, osati kumbuyo. MPEG-2 amafuna pafupifupi 4 mpaka 6 nthawi ya bitrate ya H.264 kwa chithunzi chimodzi, ndipo zinthu zake nthawi zambiri zimaphatikizidwa, zomwe zimawoneka zosapanga dzimbiri pazowonera zamakono.

Kodi ndi codec iti ya kanema yomwe FLV imagwiritsa ntchito?

Izi zimadalira pa FLV kontena. MP4 defaults kuti H.264 kwa kusewera kwamphamvu kwambiri pafoni, masamba, ndi Smart TVs. MKV defaults kuti H.265 / HEVC kwa pafupifupi theka la kukula kwa fayilo pa quality yofanana. WebM defaults kuti VP9. Zosankha zazikulu zimasonyeza kusankha kodek ngati mukufuna kuchotsa. FLV ndi Flash Video Container yomwe idabweretsa zonse zomwe zili pa intaneti kuchokera pa 2003 mpaka pomwe Flash idalephera pamapeto pa 2020.

Kodi nyimbo yanga ya audio idzapulumuka kusinthidwa kwa MPEG kupita ku FLV?

Ndiko. Ngati MPEG ndi FLV amagwiritsa ntchito codec ya audio (mwachitsanzo, onse amagwiritsa ntchito AAC), audio imasinthidwanso popanda kusinthidwanso - bit-identical. Ngati codecs ndi osiyana, audio imasinthidwanso kukhala AAC / Opus / Vorbis malinga ndi zomwe FLV zimathandizira. Audio yokhala ndi ma track ambiri (mawu ofotokoza, mabungwe osiyanasiyana) imasungidwa.

Kodi ndingapeze bwanji mitengo yazithunzi yoyamba pamene ndisintha MPEG kupita ku FLV?

Mwa default yeah - 24fps MPEG imakhala 24fps mu FLV; 60fps MPEG imakhala 60fps. Ngati mukufuna kusintha kuchuluka (mwachitsanzo, kulumikizana 29.97 → kupitilira 30, kapena 60 → 30 kwa kutsitsa), kusankha kwa framerate kumatha kuwongolera 3: 2 kutsitsa, kuchotsa, ndi kuphatikizira ma frame mu gawo limodzi lokha la encoding.

Kodi kukula kwa fayilo idzasintha bwanji kuchokera ku MPEG kupita ku FLV?

Kodikodi yofananayo imasintha (MPEG H.264 → FLV H.264 yomwe isintha kontena): kukula kwake kuli pafupifupi chimodzimodzi. Kusintha kwa codec kungayambitse kusinthika kwambiri: H.264 → H.265 nthawi zambiri kumadula fayiloyo panthawi yomweyo; VP9 ndi yofanana; AV1 imadula 20-30% koma ndi yocheperako.

Kodi fayilo ya FLV idzasewera pa iPhone, Android, ndi Smart TVs?

MP4 / H.264 imasewera mosalekeza pazogwiritsa ntchito zonse zamakono. MOV / H.264 imasewera pazogwiritsa ntchito za Apple ndi ma TV ambiri koma si nthawi zonse pa Android oyambirira. MKV iyenera VLC pa iOS. WebM ndi msakatuli woyamba. Zosankha zopitilira muyeso zimaphatikizapo "kugwirizana kwa chipangizo" choyamba chomwe chimasankha chotetezeka kwambiri FLV codec / chidebe chazofunikira zanu. FLV ya pansi pa-packet overhead anachititsa izo zabwino pa streaming pa unreliable kugwirizana wa nthawi yake, ndi mabuku akuluakulu a izobe zilipo.

Kodi ndi nthawi yayitali bwanji kusinthira kanema wa 1-hour MPEG kuti FLV?

Kusintha kwa codec yomweyo ndi nthawi ya 30 mpaka 60 kwa fayilo ya 1-hour. Kodidi yokhala ndi codec imagwira ntchito panthawi ya 0.3-0.7x yochokera pa GPU yathu, kotero kuti 1-hour MPEG → FLV imatha m'maola 18-40 malinga ndi resolution ndi codec yoyenera.

MPEG

MPEG (Moving Picture Experts Group) ndi banja la makanema ndi makanema ophatikizika omwe amagwiritsidwa ntchito kwambiri posungira mavidiyo ndi kusewera.

FLV

FLV (Kung'anima Video) ndi kanema chidebe mtundu kupanga ndi Adobe. Imagwiritsidwa ntchito posaka mavidiyo pa intaneti ndipo imathandizidwa ndi Adobe Flash Player.