MPEG → FLV

Guqula Eyakho MPEG ukuba FLV iifayile ngokulula

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Iyalayisha

Indlela yokuguqula MPEG ukuba FLV

Inyathelo 1: Layisha eyakho MPEG iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho FLV iifayile

MPEG ukuba FLV Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani i-MPEG ibe yi-FLV ngaphandle kokulahlekelwa umgangatho wevidiyo?

Layisha phezulu ifayili yakho ye MPEG kwaye umguquli uqhube i-CRF-esekelwe kwi-encoding ephindayo ebhekisa kwi-visually-lossless FLV imveliso (i-CRF 18 ngokumiselweyo, amaxabiso aphantsi = ifayili enkulu / umgangatho ophezulu). I-codec ikhethiwe ukuhambelana ne FLV isiqulathi-zifayili — H.264 ye-wide-compat MP4, H.265 ye-size-efficient MKV, VP9 ye-WebM, AV1 yee-pipelines ezintsha. Ividiyo yi-MPEG-1 okanye i-MPEG-2 ene MP2 okanye AC-3 yesandi, ephindaphindwa kwi-stream eyenziwe ukuba ikhowudiwe yi-hardware esebenza ngokusisigxina. I-FLV ihlala igcina i-Sorrenson Spark okanye i-H.264 video ene-MP3 okanye i-AAC yesandi, ejikelezwe kwifomati yokuhamba eyenziweyo yokuhambisa i-RTMP.

I-MPEG yevidiyo yam ibonisa imigca ye-comb kwi-movement - iya kuthatha into kwi-FLV?

Iya kwenza ukuba awuyi-deinterlace, kwaye MPEG imixholo ihlala i-interlaced ngenxa yokuba ifomati ivela kwixesha le-broadcast ne DVD. Iiframes ezi-interlaced zigcina iindawo ezimbini eziphakathi-ubukhulu eziqhotyoshelwe kwishumi elinesihlanu sesibini; kwifowuni eqhubekayo-yokukhangela okanye imboniselo efunda njenge-horizontal combing nantoni na ehambayo. Yenza ukhetho lwe-deinterlace kwaye i-encoder igubungela iindawo kwi-frames eziqhubekayo ezipheleleyo phambi kokubhala i FLV. I-MPEG apha ithetha i-MPEG-1 okanye i-MPEG-2 inkqubo yokuhamba, ifomati emiselweyo ye Video CD kwaye emva koko ye DVD kunye nokusasazwa kweTV.

I MPEG yam inezinto ezininzi ezidlala umculo - ngaba zonke ziya kuhlala zikhona kwi FLV?

Ayithembekanga. MPEG igcina imijelo emininzi yesandi njengemizila yohlobo lokuqala, kodwa FLV uxhaso lokudlala ngaphezulu kwemizila yokuqala ayihambelani, ngoko abadlali abaninzi baya kutyhila kuphela enye. Khetha imizila oyifunayo phambi kokuguqula; abanye bangcono ukutywina kwifayile zabo ezikhethekileyo kunokuba bashiye kwisiqulathi seefayili esifihlayo. Iinkqubo ze MPEG ziguqulwa kolunye ulwimi zisebenzisa wonke umdlali we DVD, ibhokisi ebekwe phezulu kunye nomjelo wosasazo owenziwe ngaphambili, kwaye zithobela iimpazamo zebithi ngokulula. Akukho mkhangeli zincwadi, ifowuni okanye iTV iya kudlala i-FLV - nantoni na esele ikwi-container kufuneka ishenxiswe ngaphandle ukuze ihlale ibonakale.

Ingaba i FLV iyaqhubeka idlala ngokulula kwifowuni okanye kwiTV?

Ingaba ayikwazi. MPEG ikhowudiwe yisilicon ekhethekileyo kwifowuni, iitablethi kunye neeTV, nto leyo eyenza ukuba idlala ngaphandle kokutyibilika kwebhetri. FLV ihlala ibuyela umva kwisoftware yokukhowudi kwihardware efanayo - ubunzima be CPU obuphezulu, isixhobo esishushu, kunye neeframes ezikhuphekayo kwi-4K material. Kwisixhobo esimiselweyo, MPEG yindawo ekhuselekileyo yokugcinwa ehlala kuyo.

Yintoni eyenza i-5.1 surround audio xa iguqula MPEG ukuya FLV?

I-stereo iqhutywa phantsi, kuba FLV ayinayo indlela ethembekileyo ye-multichannel. Ukujika ezantsi kusetyenziswa i-ITU eqhelekileyo esebenza ngokufanayo ukuze unxibelelwano kwisiqhagamshelanisi esiphakathi sihlale siqondakalayo kwaye i-circumstances ifike kwinqanaba eliphantsi kunokuba iphele. Nantoni na exhomekeke kukubeka isiqhagamshelanisi esikhethekileyo siphelile emva koko.

Ingaba kukho incopho eguqula phakathi kwefomati ezimbini ezidala njenge MPEG ne FLV?

Ukuba nje inxalenye ekhethekileyo yezixhobo ifuna injongo. Iifomati zombini zivela kwixesha elifanayo elingaphambili le-H.264, ngoko akukho kuguqulelo luthenga ukusetyenziswa kakuhle, umgangatho okanye uqinisekiso lwexesha elizayo - luthenga ukulungelelaniswa nesixhobo esithile. Ukuba injongo kukugcina imifanekiso esetyenziswa ixesha elide, guqula kwicontainer yangoku endaweni ye-sideways. I-MPEG-2 ifuna iindidi ezine ukuya kwezisithandathu ze-bitrate ye-H.264 yomfanekiso ofanayo, kwaye imixholo yayo ihlala idityaniswa, ebonakala icocekile kwi-displays yakudala.

Yeyiphi i-codec yevidiyo esetyenziswa yi-FLV?

Ixhomekeke kwi FLV isiqulathi seefayili. I-MP4 imiselwe ukuba ibe yi-H.264 ukuze ixhase ukudlala okubanzi phakathi kweefowuni, ii-browser, kunye ne-Smart TVs. I-MKV imiselwe ukuba ibe yi-H.265 / HEVC ukuze ilinganise nengxenye yobungakanani befayili kwinqanaba elifanayo lomgangatho. I-WebM imiselwe ukuba ibe yi-VP9. Iinketho eziphambili zibonisa ukhetho olucacileyo lwe-codec ukuba ufuna ukucima. FLV yindawo yokugcina i-Flash Video ehambisa yonke i-web video ukusuka ngo-2003 de i-Flash ivale ekupheleni konyaka ka-2020.

Ingaba umculo wam wesandi uya kuqhubeka uguquka ukusuka kwi MPEG ukuya kwi FLV?

Ewe. Xa MPEG ne FLV zibelana nge-codec yesandi (umzekelo, zombini zithabatha i-AAC), isandi siphinda sixutywe ngaphandle kokubuyisela ukukhowuda - i-bit-identical. Xa ii-codecs zihlukile, isandi siguqulwa kwi-AAC / Opus / Vorbis kuxhomekeke ekubeni i-FLV ixhasa ntoni. I-audio enezithotho ezininzi (iingxelo, iilwimi ezitshintshiweyo) igcinwa.

Ndingagcina i-framerate yokuqala xa ndiguqula i-MPEG ibe yi-FLV?

Ngokungagqibekanga ewe — i-24fps MPEG ihlala i-24fps kwi-FLV; i-60fps MPEG ihlala i-60fps. Ukuba ufuna ukuguqula umyinge (umzekelo, i-interlaced 29.97 → i-progressive 30, okanye i-60 → 30 yemida yokukhuphela), ukhetho lwe-framerate luphatha 3:2 ukutsala ezantsi, ukususa uthungelwano, kunye nokuqhekeka kwe-frame kwindlela efanayo yokufihla.

Ubungakanani befayili butshintsha njani ukusuka kwi MPEG ukuya kwi FLV?

I-codec efanayo yokuphinda-phinda (MPEG H.264 → FLV H.264 itshintsha kuphela isiqulathi seefayili): ubungakanani obufanayo. Utshintsho lwe-codec lunokutshintsha ngokumangalisayo: H.264 → H.265 luya kuquka ifayili kwinqanaba elifanayo lomgangatho wokubona; VP9 imalunga nokuthelekiswa; AV1 icima enye i-20-30% kodwa ihamba phantsi ukukopela.

Ingaba ifayili FLV iyadlala kwi-iPhone, Android, kunye neSmart TVs?

MP4 / H.264 idlala ngokusemthethweni kwisixhobo ngasinye esitsha. MOV / H.264 idlala kwizixhobo ze-Apple kunye neTV ezininzi kodwa hayi rhoqo kwi-Android edala. MKV ifuna i-VLC kwi-iOS. WebM ikwi-browser-first. Iinketho eziphambili ziquka "ukulungelelanisa isixhobo" esimiselweyo esikhetha i-FLV codec / isiqulathi esikhuselekileyo senjongo yakho. I-FLV's ephantsi ngepakethi nganye i-overhead iyenze igqibelele kwi-streaming ngaphezulu konxibelelwano olungathembekiyo lwexesha lakhe, kwaye ii-archives ezinkulu zayo zihlala zikhona.

Ithatha ixesha elingakanani ukutshintsha i-MPEG yevidiyo yeyure enye ibe yi-FLV?

I-Same-codec re-mux ikwindawo efutshane-imizuzu engama-30 ukuya kwengama-60 yefayili yeyure enye. I-codec epheleleyo ephinda-ikhowudi iqhuba malunga nexesha lomthombo we-0.3-0.7x kwi-GPU yethu, ngoko ke i-1-iyure MPEG → FLV igqiba kwimizuzu engama-18-40 ngokuxhomekeka kwisisombululo kunye ne-codec emiselweyo.

MPEG

I-MPEG (iQela leeNgcali zeMifanekiso eshukumayo) lusapho lwevidiyo kunye neefomati zokucinezela iaudio ezisetyenziswa ngokubanzi ukugcinwa kwevidiyo kunye nokudlala kwakhona.

FLV

I-FLV (iVidiyo yeFlash) yifomati yesikhongozeli sevidiyo ephuhliswe nguAdobe. Isetyenziswa ngokuqhelekileyo ukusasazwa kwevidiyo kwi-intanethi kwaye ixhaswa yi-Adobe Flash Player.