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

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.

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.

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?

Umhlathi Tshintsha i-MP4 ukhululekile ngaphandle kwe-akhawunti, kwaye i-output ayikho i-watermark, akukho phawu lwekona kwaye akukho khadi le-intro. Ividiyo elayishwe phezulu isuswa kubasebenzi emva kokuba umsebenzi ugqityiwe.

Kutheni i WebM inxuwa liququzelela Tshintsha i-MP4?

WEBM.to ibekwe phantsi kwebhokisi ye-web evulekileyo ekhethiweyo — VP9 okanye AV1 nge-Opus audio, ikhowudiwe ngokusemthethweni ngazo zonke iziphequluli zexesha elidlulileyo kwaye ayifuni iplugin, ilayisensi okanye umdlali. Ividiyo yimeko apho izithuthi ezijikelezayo ezingaphezulu zibuhlungu kakhulu - iifayile zikhulu kwaye zonke ukukhuphela zibiza iiyure ezilungileyo. Ukusebenza Tshintsha i-MP4 kwindlela yokuhambisa i-pipeline efanayo njengeeguqulelo kuthetha ukuba ukukhuphela omnye ugubungela umsebenzi wonke endaweni yokukhuphela omnye kwisixhobo ngasinye.

Ndiza kwenza ntoni ngeziphumo xa i Tshintsha i-MP4 igqityiwe?

Umguquli kule ndawo uhambisa ividiyo phakathi kweWebM, MP4, MKV, MOV kunye nezinye, okanye utsala umculo ophumayo ngokupheleleyo, ngaphandle kokukhuphela enye. Ukulandelela okunjalo kubaluleke kakhulu kwividiyo kunezinye iindawo: ukuphinda- ukhowudi nganye kuhlobo olunye, ngoko ke, xa kuncinci kwabo phakathi kombhalo kunye nefayile opapashayo, ibonakale ingcono.

Ingaba Tshintsha i-MP4 apha isixhobo esifanayo esisebenza kumasayithi afana nalowo?

Iinjini zinikezelwa - i-ffmpeg enye yokwakha nge x264, x265 ne libvpx, abasebenzi abafanayo, amaqondo afanayo. Oku WebM inxuwa lidibanisa kukubona kwiinqanawa ne codecs: ezi zidibanisa zidlala naphi na, ezifuna ukuphinda zikhowudi kwaye ezi zingakopela ngokulula. Oku kuqala kwinyani enye malunga nefomati le nxuwa libizwa emva: I-WebM yi-VP9 okanye i-AV1 ene-Opus yesandi, esiza kuyenza ikhowudi ikwi-browser kodwa esiya kuyenza ikhowudi kwi-desktop editors xa irhweba ngaphakathi.

Ndifuna i-akhawunti, kwaye ngaba kukho into egcinwa?

Akukho akhawunti, kwaye akukho nto igcinwa: ividiyo elayishwe phezulu isuswa kubasebenzi emva kokuba umsebenzi ugqibile, akukho nto ijongwa kwaye akukho nto ikhoyo. Iiakhawunti ezikhululekileyo zikhona kwimbali kunye nobungakanani beqela, hayi kwingeniso.