Tshintsha isivinini MP4

I-Free Online MP4 Speed Changer

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Isivinini sokudlala

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Indlela yokuguqula isivinini se MP4

1 Layisha phezulu i MP4 videos ofuna ukuyibuyisela isikhathi.

2 Khetha um multiplier — 0.5x ngejubane eliphakathi, 2x ngejubane eliphindwe kabili — uhlala ngaphakathi 0.75x kuya ku-2x uma okuqukethwe kukhuluma.

3 Sebenzisa; isikhathi-sibambezela sigcina isikhala, ngakho imisindo ihlala ijwayelekile endaweni yokudlulisa phezulu.

4 Layisha phezulu ifayela elibizwa kabusha MP4 ngesithombe nesandi esiqhubekayo.

Tshintsha isivinini MP4 Imibuzo Evame Ukubuzwa

Indlela i Tshintsha isivinini MP4 eshintsha ngayo izinga lokudlalwa?

Ngokucacile, ama-timestamps emboniso aphinde alinganiswe futhi umsindo uphinde uphinde ubambe isikhathi ukuze ulinganise ne-pitch egcinwe, ngakho isithombe nesandi zihlala zihamba ngasikhathi sinye; ama-speed-ups amakhulu akhipha futhi amafreyimu angaphezulu kunalokho okudlala ngokushesha. Khetha umphinda-phindo — 0.5x ngejubane eliphakathi, 2x ngejubane eliphindwe kabili — futhi ifayela lonke lizophinde lihlolwe.

Ingabe ukukhawulela kuzokwenza amazwi azwakale aphezulu?

Akunakwenzeka. Isikhathi-sokuzivumelanisa sigcina isikhala, ngakho-ke umsindo wezwi we-1.5x uzwakala njengemuntu ofanayo okhuluma ngokushesha kunalokho ongathi u-chipmunk. Lokhu kuyinto ehlukile phakathi kwesikhathi-sokuzivumelanisa nokudlala kuphela izithako ngokushesha.

Ingabe ifomethi yomsuka ithinta imiphumela?

Ikwenza. MP4 yindawo ephephile yokulethwa kwebhokisi: H.264 video ne-AAC audio idlala ngokuphumelelayo kunoma iyiphi ifoni, i-browser ne-TV ngaphandle kwe-codec pack. Lokhu kuchaza ukuthi ngabe imiphumela eguqulwe ingabhalwa emuva ngokulula noma kufanele iphinde ikhodwe ngokuphelele.

Ingabe kukhona okuthile okukhethekile ku MP4 lapha?

Yebo — MP4 igcina isibalo sayo ku-moov atom, ngakho-ke ukudlulisa-ukukopa ukuhlela kuncane futhi imiphumela ihlala ifuna ngokufanele kwi-browser. Kubalulekile ukwazi ngaphambi kokuba ushintshe isivinini esikhulu.

Ngafinyelela nini isivinini ngaphambi kokuba kuzwakale kulungile?

Kusuka ku-0.75x kuya ku-2x kucacile ukuxoxa. Kungaphezulu kwe-2.5x, ama-artefacts azungeze atholakali kunoma yisiphi i-algorithm, futhi ngaphansi kuka-0.5x, ukuvuselelwa kufanele kuthuthukiswe kakhulu. Umculo uthobela ngaphezu kokuxoxa.

Ingabe isithombe nesandi sihlala sihamba ngasikhathi sinye?

Yebo. Zonke ziphinde zihlolwe ngengxenye efanayo kumsebenzi owodwa, ngakho-ke azikwazi ukudlula ngazo — okuyiphutha elijwayelekile uma ijubane lishintshwa ngokulungisa iziqukathi ezimbili ngokuzimela.

Yini engikwazi ukuyifaka ku Tshintsha isivinini MP4?

MP4, MOV, MKV, WebM, AVI, WMV, FLV, 3GP, M4V, MPEG ne MPG. Isihlungi kanye ne-codec zihlolwa ngaphambi kokuba kwenzeke noma yini, ngakho-ke iqembu elixhunywe liphathwa ngokulungile ngefayela ngalinye ngaphezu kokucabanga ukuthi lifana.

Ingabe kunesilinganiselo sobukhulu behele ku Tshintsha isivinini MP4?

Yebo: ama-akhawunti amahhala ahlela ividiyo kuze kube yi-40 MB ngefayela ngalinye, ngokuya nge-cap enamandla kakhulu kuwebhusayithi; i-ffmpeg ene-x264, x265 ne-libvpx isebenza, okuwumsebenzi ofanayo ongaphansi kwesoftware yevidiyo yedesktop. Ividiyo iyimindeni eyodwa lapho i-cap iphakeme kakhulu ukuthi ikhuphule isikhathi, hhayi umkhawulo, yilokho ongeke uqaphele.

Ingabe Tshintsha isivinini MP4 izonciphisa ukhwalithi ye MP4 videos yami?

Kuxhomekeka ukuthi ngabe umsebenzi udinga uku-code kabusha. Ukusebenza okuthinta kuphela isikhala noma i-timeline kwenziwa njengekhophi yo fluxu futhi isithombe sifana kakhulu nomsuka. Noma yini edinga ukudweba kabusha amafreyimu idlula x264/x265 ku-quality level obekwe kuyo, lapho i-CRF 23 ibonakala icacile ku-footage eningi.

Ingabe ngizosebenzisa Tshintsha isivinini MP4 ku MP4 videos amaningi ngasikhathi sinye?

Yebo. Ifaka ifolomu ngokufanayo, okubalulekile lapha kunanoma yikuphi ngoba imisebenzi yevidiyo iminithi hhayi imizuzwana. Ama-akhawunti amahhala asebenza ngefayela elinye ngasikhathi sinye; i-pass iphakamisa lokho.

Yini ezoba nesandi, isisihloko nesiqephu sezinhlamvu?

Zithunyelwa ngaphesheya. Umsindo we-multi-track, ama-tracks esihloko esingezansi esifakwe kanye nama-chapter markers ahlala lapho i-target container ingabonisa khona - lokho kuyinto eyinhloko ehlukanisa umsebenzi ofanele kusuka ku-naive re-encode egcina ngokucophelela kuphela i-track eyodwa.

Ingabe Tshintsha isivinini MP4 ibiza noma yini?

No. Tshintsha isivinini MP4 ikhululekile ngaphandle kwe-akhawunti, futhi i-output ayinamanzi, akukho ilogo ye-corner futhi akukho ikhadi lokungenisa. Ividiyo elayishwe phezulu isuswa kubasebenzi ngemuva kokuqedwa kwemisebenzi.