Cima MP4

I-Free Online MP4 Compressor

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*Iifayile zicinyiwe emva kweeyure ezingama-24

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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

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?

Ininzi ngokupheleleyo nge bitrate okhetha ngayo kwaye ngento eninzi imifanekiso ehamba ngayo. Ushicilelo lwekhusi okanye i-locked- off indlebe ethethayo icinezela kakhulu, kuba uninzi lweeframe nganye zifana nezo phambi kwayo; imifanekiso ephathekayo, ingqolowa, umhlwa neconfetti ziimeko ezibi kakhulu. Xa uphumeleleyo ocacileyo uhambe, ukunciphisa ugqibo kugcina ngaphezu kokunyusa umgangatho.

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.

Yintoni impazamo eqhelekileyo xa uxinzelela MP4 videos?

Uxinzelelo lwefayile efanayo ngokuphindaphinda. Ugqithiso ngalunye kwifomati elahlwayo luhlobo olutsha lolahleko kwaye ulondolozo luncipha ngelixa ukulimala kunyuka. Yiya ukusuka kukuqala ukuya ku target yakho kwinyathelo elinye, ugcine ukuqala.

Ndifumana ntoni, kwaye ndingalawula njani utshintshiselwano?

Ifayile epheleleyo ecinezelweyo nganye yengeniso, kumgangatho okanye umphakamo we-bitrate okhetha kuyo kunokuba kugqibeke okumiselweyo. Ukuba isiphumo sikhulu kakhulu, ukunyusa ubungakanani okanye ukucima ixesha lokusebenza kwenza ngaphezu kokunyusa umgangatho omiselweyo ezantsi.

Yintoni endinokuyilayisha kwi Cima MP4?

MP4, MOV, MKV, WebM, AVI, WMV, FLV, 3GP, M4V, MPEG ne MPG. Isiqulathi seefayili kunye 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.

Ndingaqhuba i Cima MP4 kwi MP4 videos ezininzi ngaxeshanye?

Ewe. Ikhupha umqulu ngokuthe tye, obalulekileyo apha kunaphi na apho kuba imisebenzi yevidiyo yimizuzu kunokuba yimizuzwana. Iiakhawunti ezikhululekileyo ziqhuba ifayile enye ngexesha; i pass iphakamisa loo nto.

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.

Ingaba i Cima MP4 ibiza nantoni na?

No. Cima MP4 ikhululekile ngaphandle kwe-akhawunti, kwaye i-output ayikho i-watermark, akukho phawu lwekona kwaye akukho khadi lokungenisa. Ividiyo elayishwe phezulu isuswa kubasebenzi emva kokuba umsebenzi ugqityiwe.