Tshintsha i-MP4

I-Free Online MP4 Speed Changer

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*Iifayile zicinyiwe emva kweeyure ezingama-24

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Iyalayisha

Utshintsho lwesantya se MP4

1 Layisha phezulu i MP4 videos ofuna ukuyibuyisela kwixesha elidlulileyo.

2 Khetha umphinda-phindo - 0.5x kwisantya esiphakathi, 2x kwisantya esiphindwe kabini - ukuhlala ngokuthe nkqo ngaphakathi kwe 0.75x ukuya kwi 2x ukuba okuqulethwe kukuthetha.

3 Sebenzisa; ixesha- lokutsala ligcina umphakamo, ngoko imiyalezo ihlala iqhelekileyo endaweni yokutshintsha phezulu.

4 Layisha ezantsi ifayili ebizwa kwakhona MP4 enemifanekiso nesandi ezisahamba ngaxeshanye.

Tshintsha i-MP4 Imibuzo ebuzwa rhoqo

I Tshintsha i-MP4 itshintsha njani umyinge wokudlalwa?

Ngokucacileyo, iimphawu zexesha lomboniso ziphinda zilinganiswe kwaye umsindo ujikelezwe ixesha ukufana nesantya esigcinwe, ngoko umfanekiso nesandi zihlala zihamba ngaxeshanye; ukhawuleziso olukhulu luyakhupha iframes ezigqithisileyo endaweni yokuzidlala ngokukhawuleza. Khetha umphinda-phindo — 0.5x kwisantya esiphakathi, 2x kwisantya esiphindwe kabini — kwaye ifayile yonke iphinde ibizwa.

Ingaba ukukhawulezisa kuyakwenza ukuba imiyalezo isebenze ngokuphezulu?

Hayi. Umhla- wokuphumla ugcina umphakamo, ngoko 1. 5x umkhondo wokuthetha uthetha njenge umntu ofanayo othetha ngokukhawuleza kunokuba njenge chipmunk. Lo ngumsebenzi phakathi kwexesha- lokuphumla elifanelekileyo nokudlala kuphela iisampulu ngokukhawuleza.

Ingaba ifomati yombhalo ibangela ukuba iphumeze?

Iyenza. MP4 yindawo ekhuselekileyo yokuhanjiswa kwempahla: i-H.264 video ene-AAC audio idlala ngokufanelekileyo kwifowuni, kwibrowser neTV ngaphandle kwe-codec pack. Eli limisela ukuba i-retimed efunyenwe ingabhalwa kwakhona ngexabiso eliphantsi okanye kufuneka iphinde ikhowudiwe ngokupheleleyo.

Nantoni na ekhethekileyo kwi MP4 apha?

Ewe — I-MP4 igcina isalathisi sayo kwi-moov atom, ngoko ukudlulisa-ukukopa ukuhlela kufutshane-nokukhawuleza kwaye isiphumo sihlala sikhangela kakuhle kwisikhangeli. Kubalulekile ukwazi ngaphambi kokuba uthathe isigqibo sotshintsho olukhulu lwesantya.

Ndiya kukwazi ukutsala njani isivinini phambi kokuba ilizwi lize liphume kakubi?

I-0.75x ukuya kwi-2x ibonisa ngaphaya kokuthetha. Ngapha kwe-2.5x i-artefacts yokutsala ivela kwi-algorithm, kwaye ngaphantsi kwe-0.5x ukwakha kwakhona kufuneka kuvelise kakhulu. I-music ithobela ngaphantsi kokuthetha.

Ingaba umfanekiso nesandi zihlala zihamba ngaxeshanye?

Ewe. Zonke ziphinda zitshintshwe ngento efanayo kumsebenzi omnye, ngoko ke azikwazi ukujika zihamba - eyona ngxaki iqhelekileyo xa ukhawulezo lutshintshwa ngokuhlela imijelo emibini ngokuzimeleyo.

Yintoni endinokuyilayisha kwi Tshintsha i-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 Tshintsha i-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 Tshintsha i-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 Tshintsha i-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 Tshintsha i-MP4 ibiza nantoni na?

No. Tshintsha i-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.