Cima MP4

I-Free Online MP4 Compressor

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*Iifayile zicinyiwe emva kweeyure ezingama-24

Cima ukuze ulungele ubungakanani

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Iyalayisha

Indlela yokuZicimeza MP4

1 Nciphisa i MP4 videos yakho kwibhokisi ephezulu, okanye ukhethe kwisixhobo sakho - akukho nto yokufakela kwaye akukho akhawunti yokuyenza.

2 Khetha ukuba kunzima kangakanani ukucofa: umgangatho okanye injongo ye bitrate, kwaye ngokuzenzekelayo ubungakanani obuncinane ukuba ubungakanani bubalulekile kuwe ngaphezulu kweenkcukacha.

3 Qala umsebenzi kwaye vumela abasebenzi ukuba baphinde bapakishe ifayile; okuqala wakho akatshintshwanga kwindawo.

4 Uthelekiso lobungakanani obutsha nokuqala, emva koko ulayishe ifayili ecinezelweyo MP4.

Cima MP4 Imibuzo ebuzwa rhoqo

Ingaba ifomati yefayili yam itshintsha ukuba ndingagcina ntoni?

Very much so. MP4 yindawo ekhuselekileyo yokuhanjiswa kwempahla: i-H.264 video ene-AAC audio idlala ngokufanelekileyo kwifowuni, kwibrowser neTV ngaphandle kwe-codec pack. That determines both the headroom available and whether the saving costs you anything in fidelity.

Ingaba kukho into ekhethekileyo kwi MP4 endimele ndiyazi phambi kokuba ndicofe?

Yes — I-MP4 igcina isalathisi sayo kwi-moov atom, ngoko ukudlulisa-ukukopa ukuhlela kufutshane-nokukhawuleza kwaye isiphumo sihlala sikhangela kakuhle kwisikhangeli. It is worth knowing before you overwrite an original you might need again.

I-Cima MP4 iyenza njani ifayili ibe ncinane?

Ngokucacileyo, umfanekiso uphinde ukhowudiwe nge x264 okanye x265 kwi CRF omiselweyo, onokuthi ulinganiswe phantsi kuqala; i CRF 23 ibonisa ngokucacileyo kwimifanekiso emininzi kwaye inkqubo nganye malunga nesithandathu iphinda iqulethe ifayile. Akukho nto malunga nayo ixhomekeke ekufakeni kwakho isoftware: umsebenzi uqhuba iserver-side kwaye ubuyisela ifayile egqityiweyo.

Ingaba ifayili yam iya kuba ncinci kangakanani?

Oku kugqibwa yimixholo, hayi yisixhobo. Iinkcukacha zomfanekiso kunye nefilimu yegranule imelana nokucinezela; umbala othambileyo, umbhalo kunye noxolo lufa. Ulindeleko oluchanekileyo luyimfuneko enkulu yokuncitshiswa nakweyiphi na into enemimandla emikhulu efana nenye encinci kwimifanekiso exakekileyo okanye i clip ye-high-motion.

Yintoni eyenza i-audio, isicatshulwa esingaphantsi kunye nengoma yesiqalo?

Zithunyelwa ngaphaya. Iindlela ezininzi zosandi, iindlela ezifakwe phantsi zesihloko kunye nabaphawuli besiqendu baphila apho injongo yomgcini ingabonisa khona - le nto iphambili ehlula umsebenzi olungileyo ukusuka kwi naive re- encoding egcina ngokucothayo kuphela indlela enye.

Yintoni endinokuyilayisha kwi Cima MP4?

MP4, MOV, MKV, WebM, AVI, WMV, FLV, 3GP, M4V, MPEG ne MPG. Isiqulathi seefayili ne-codec zivavanywa phambi kokuba nantoni na iqhube, ngoko ke iqela elidityanisiweyo liphathwa ngokuchanekileyo kwifayili nganye kunokuba lithathelwe ingqalelo ukuba lifanayo.

Ingaba kukho umda wobungakanani befayili kwi Cima MP4?

Ewe: i-akhawunti ekhululekileyo iqhubekeka ividiyo ukuya kwi-40 MB ngefayile, ngokuthe ngqo i-cap elungileyo kakhulu kwiwebhusayithi; i-ffmpeg ene-x264, x265 ne-libvpx isebenza, eyiyo enye i-toolchain ecaleni kwesoftware yevidiyo ye-desktop. Ividiyo yisapho elinye apho i-cap iphezulu ngokwaneleyo ukuba ikhuphe ixesha, hayi umda, yiyo into oza kuyiqaphela.

Ingaba i Cima MP4 iya kunyusa ubunjani be MP4 videos yam?

Oku kuxhomekeke ekubeni umsebenzi ufuna ukucoda kwakhona. Umsebenzi oqhagamshelana kuphela nomgquba okanye umgca wexesha wenziwe njengekopi yokuhamba kwaye umfanekiso ufana ne-bit-to-source. Nantoni na efuna ukuzoba kwakhona iframes ihamba nge x264/x265 kwinqanaba lomgangatho omiselweyo, apho i-CRF 23 ibonisa ngokucacileyo kwimifanekiso emininzi.

Kutheni i-site ekwifomati entsha iqhuba Cima MP4?

WEBP.to ibekwe phantsi kotshintsho olutsha lwezo zombini iinkqubo ezingagqibekanga: ifomati enye eyenza ilahlekile, engalahleki, i-alpha kunye nobuchule, kwaye ihlala incinci kune-JPEG okanye i-PNG eyavela kuyo. Abantu bafika apha begqibe ukuba iimfuno eziqhelekileyo zakudala zibiza ibhandewidth, kwaye loo sinqumo sikhupha ngokuzenzekelayo isiphelo: ubungakanani obunjani, umgangatho onjani, into eyenza ukuba ibonakale. Cima MP4 ikwi-upload efanayo ne-akhawunti efanayo ukuze ezo mibuzo ziphendulwe kwindawo enye.

Xa i Cima MP4 iphumeze, yintoni ekufuneka yenziwe emva koko?

Umguquli kule ndawo uhambisa imifanekiso ukuya nakwi WebP, PNG, JPG ne AVIF, apho ugqiba khona ukuba ifayile encinci ifanele ilahle iiseva ezidala. Ukwenza oku ngokulandelana okubalulekileyo: khetha ii-pixels kuqala kwaye isiqulathi-zifayili emva koko, kuba isiqulathi-zifayili sigqibo esiphantsi kwaye ii-pixels zibiza kakhulu.

Ingaba iinxuwa ezifanayo ziqhuba into eyahlukileyo?

Iinjini zifana - iilayibrari ezifanayo, abasebenzi abafanayo, iziqhoboshi ezifanayo. Okuhlukileyo kumbono odityanisiweyo, kwaye umbono apha uhlala kwipropathi yefomati le ndawo ibizwa emva: i-.webp efana ne-extension ingagcina i-VP8 frame elahlekile, enye engalahlekiyo, okanye udweliso, ngoko ke indlela yokusebenza efanelekileyo igqibwa ngefayili nganye kunokuba yi-extension nganye.

Yintoni eyenza ifayili yam, kwaye ngaba i-akhawunti ifuneka?

Akukho akhawunti, kwaye akukho nto igcinwa: ulayisho lususwa abasebenziyo emva komsebenzi ugqiba, kwaye akukho nto ivavanywa, idweliswe okanye iqulathe isalathisi. Iiakhawunti zikhona kuphela kwimbali kunye nobungakanani beqela.