MP4 Wiki: Yuav ua li cas yog MP4, Keeb kwm, nta thiab pab ntawm MP4

• Part 1. Yuav ua li cas yog MP4
• Part 2. Cov Keeb kwm ntawm MP4
• Part 3. nta ntawm MP4
• Part 4. Cov pab ntawm MP4
• Part 5. Kom qhov zoo tshaj plaws MP4 Converter

Part 1. Yuav ua li cas yog MP4

Thaum uas feem ntau ntawm peb saib los yog tsim movies txhua tus thiab txhua txhua hnub, tsuas yog ib qho ob peb coj lawv lub sij hawm mus saib cov hom ntawv. Muaj ntau tawm tswv yim rau txhua kev khiav hauj lwm systems, tab sis ib txhia ntawm lawv, xws li cov MP4 yuav siv tau rau ntau yam platforms, uas ua rau lawv ib tug yooj yim heev mus faib thiab siv.

MP4 yog ib cov multimedia hom uas muaj peev xwm sawv ntawm khaws cia ob video thiab audio. Nyob rau sab saum toj ntawm uas, nws muaj peev xwm kuj integrate lwm cov ntaub ntawv raws li zoo, xws li tseem dluab thiab subtitles, tab sis kuj xav paub ntau tshaj cov ntsiab lus raws li tau zoo xws li 3D graphics, menus thiab cov neeg siv kev sis raug zoo. Qhov no ua rau nws ib tug portable thawv hom ntawv uas theem ntau lub peev xwm xws li raws li streaming los yog playback.

Lub MP4 hom ntawv yog raws li cov QuickTime ntaub ntawv hom ntawv. Txawm ntau, nws yog yuav luag identical, tab sis nws tsis tuaj nrog them nyiaj yug rau lwm MPEG nta raws li piav qhia. Thaum no yog ib tug multimedia hom ntawv, koj yuav tau yooj yim embed heev heev hom ntawm cov ntaub ntawv los ntawm kev siv tus kheej ntws. Nyob rau hauv cov ntaub ntawv no, ib tug nyias muaj nyias ib hint khiav yuav tsum tau tsim rau lub hom phiaj no. MP4 cov ntaub ntawv kuj yuav muaj metadata raws li ib tug txheej txheem, uas yog tiag tiag ib qho tseem ceeb.

Muaj ntau hom kev MP4, txhua ib tug nrog nws tus kheej extension. Ua ntej ntawm tag nrho cov, peb muaj MPEG-4 cov ntaub ntawv uas yog coj tuaj rau hauv lub .mp4 extension, ces peb muaj MPEG cov ntaub ntawv uas muaj tsuas suab, uas yog cia nyob rau hauv .m4a. Lub MPEG-4 nrig txog kev pom bistreams yog encoded nyob rau hauv lub m4v extension, uas kuj yog ib hom ntawm MP4. Koj muaj peev xwm txawm nrhiav tau ib tug piv txwv ntawm MP4 nyob rau hauv lub .3GP thiab .3G2 hom zoo li.

Part 2. Cov Keeb kwm ntawm MP4

Raws li tau teev ua ntej lawm, lub MP4 thawv hom ntawv yog raws li nyob rau hauv cov kua QuickTime hom ntawv, kuj hu ua .mov. Qhov no hom ntawv twb xub siv rov qab nyob rau hauv 2001 raws li cov ISO / IEC 14496-1: 2001 standard, uas twb hloov ib tug ob peb xyoos tom qab ntawd, nyob rau hauv 2003 rau lub ISO / IEC 14496-14: 2003 txheem.

Vim lub fact tias tag nrho ob qho MP4 thiab MOV hom siv tib MPEG-4 tawm tswv yim, lawv tau yooj yim ua hauj lwm ua ke nyob rau hauv ib tug QuickTime ib puag ncig. Txawm li cas los, MP4 yog ib co nrov tshaj MOV vim tot nws qhov tseeb hais tias nws yog faib nyob rau lwm lub hom platforms li zoo, tsis tsuas Macs. Cov no muaj xws lub qhov rais, Linux thiab ib tug tibneeg ntau ntau cov mobile pab kiag li lawm zoo li. Koj yuav nrhiav tau nws nyob rau hauv ib tug PSP piv txwv li, tab sis kuj nyob rau hauv video players thiab Blu-txoj sab ci players zoo li. Ib tug me me qhov sib txawv yog tswvcuab nyuam qhuav los ntawm lub MOV hom los ntawm kev siv ntawm multichannel suab, whereas MP4 tseem lacks kev pab txhawb nqa rau cov uas, yam tsawg kawg rau lub sij hawm ua.

Part 3. nta ntawm MP4

Ua ntej ntawm tag nrho cov, cov MP4 cov ntaub ntawv yog ib qho qhib txuj uas yuav siv tau los ntawm txhua leej txhua tus. Lawv coj tau txhawb nqa rau ntau ntau ntawm kev khiav hauj lwm systems, uas yuav ua rau lub hom heev txhim khu kev qha thiab yooj yim mus faib, ib yam dab tsi uas yog heev tshwj xeeb nyob rau hauv lub ntiaj teb no ntawm video thiab audio tawm tswv yim.

Tsis tas li ntawd, nws muaj ib tug high degree ntawm compression thiab nws ua ntaub ntawv nrog me me luaj li thaum muab piv mus rau lwm cov tawm tswv yim. Yuav ua li cas yog qhov zoo yog hais tias lub txo cov ntaub ntawv loj yog tsis tam sim ntawd txhais nyob rau hauv zoo tsis tau, raws li cov hom khaws luag zoo tib yam li cov thawj, nws tsuas thiaj li tau cov ntaub ntawv loj lawg hlob hlob, ua rau nws lub zoo meej xaiv rau cov sij hawm thaum koj xav tau nyem ib yam dab tsi thiab koj yuav nyob rau qhov kev mus.

Lub MP4 hom ntawv yog kuj zoo kawg thiab nyob rau ntawm lub capturing siab tsab ntawv tsa suab cov ntsiab lus tsis tau muab tej kev txiav txim ntawm cov lus tsa suab plooj, ua rau nws zoo kawg nkaus rau txhua yam uas video ntaubntawv. Yog dab tsi ntxiv, nws kuj txaus siab nyob rau hauv feem ntau video hais txog daim ntaub ntawv koj yuav nrhiav tau. Nws kuj yog ib tug txheej txheem hom ntawv uas yog txaus siab rau feem ntau qhov chaw uas coj video kev pab txhawb nqa thiab nws mas ntshai li qhov zoo tshaj plaws video hom ntawv rau hauv internet, txawm hais tias nws yog siv heev hnyav ncawv sab nraum lub browser zoo li.

Lub txo cov ntaub ntawv loj coj ib tug ntau ntawm cov kev pab mus rau lub rooj, cov kev pab cuam uas koj yuav tau yooj yim coj mus rau hauv tus account thaum xaiv ib tug tshiab video hom ntawv, raws li hais tias feature ib leeg ua MP4 heev portable thiab yooj yim rau siv / faib. Yog hais tias koj nrhiav ib hom ntawv uas ua hauj lwm thiab zoo tib yam nyob rau hauv tag nrho cov video players koj yuav nrhiav tau nws txoj sia thiab rau tag nrho cov kev khiav hauj lwm systems thiab platforms koj yuav nrhiav tau, ces MP4 yog muaj tseeb rau txoj kev xaiv rau koj.

Part 4. Cov pab ntawm MP4

Vim lub fact tias MP4 no mas hais txog lub MOV hom ntawv, koj muaj peev xwm cia li khiav no hom ntawm cov ntaub ntawv nyob rau hauv tej Mac raws li computer tsis muaj ib qhov teeb meem. Los ntawm cov yeeb yaj duab rau commercials thiab lwm yam kev yees duab cov ntsiab lus, koj muaj peev xwm kuj nrhiav MP4 nyob rau ntau cov websites, vim lub fact tias nws yog ib hom uas tsis tau hais tias ntau qhov chaw cia, thiab hais tias yog muaj tseeb qhov tseem ceeb thaum koj tsim ib tug yees duab tshwj xeeb tshaj yog rau lub web.

Hais txog uas, MP4 yog txawm siv nyob rau hauv Linux, lub qhib platform, thiab muaj ib tug heev heev ntawm qhib qhov chaw players uas coj tau txhawb nqa rau hom ntawv no. Ib tug ntawm lub ntsiab platforms koj yuav nrhiav tau MP4 rau tseem nyob qhov rais, thiab ntawm no yog koj yuav nrhiav tau ib tug plethora ntawm video players thiab converters uas yuav coj kom zoo dua ntawm no zoo kawg nkaus hom zoo li.

Ib qho ntawm nws lub ntsiab siv tab sis tseem nyob twj ywm hauv lub MP4 players. Thaum tus neeg enjoyed MP3 players heev heev thaum lawv xub tshwm sim vim lub fact tias lawv yuav mloog lawv tus kheej music tsis muaj teeb meem, qhov yuav tsum tau rau ib tug portable ntaus ntawv uas kuj txhawb video tuaj mus ua si heev ceev ceev. Yog vim li cas lub MP4 players nyob, thiab lawv yog ib tug ntaus ntawv muaj peev xwm khiav MP4 yeeb yaj duab ntawm ib tug me me daws teeb meem uas suits cov zaub ntawm lub ntaus ntawv, thaum tseem ua tau muab kev pab txhawb nqa MP4 zoo li. Qhov no yog vim li cas cov players yog ib tug zoo multimedia platform thiab, txawm tias lawv tau muaj rau heev ib tug ntau ntawm xyoo tam sim no, lawv tseem nyob twj ywm nyob rau hauv kev ua lag luam nrog ib tug neeg twg npaum li cas ntawm kev muag khoom. Koj kuj nrhiav tau ntau yam kev siv rau MP4 zoo li, xws li DVD players los yog lwm yam pab kiag li lawm uas tso cai rau koj mus ua si video cov ntsiab lus.

Part 5. Kom qhov zoo tshaj plaws MP4 Converter

MP4 yog ib tug yawm lug siv video hom; nws yog siv nyob rau hauv Internet thiab tseem nyob rau mobile pab kiag li lawm. Qhov zoo tshaj plaws MP4 converter yog UniConverter. Qhov cuab yeej no yog zoo tagnrho rau cov hloov MP4 vim hais tias nws ua hauj lwm thaum muaj kev kub ceev thiab tsis hais nruab nrab qhov zoo ntawm cov kev yees duab. Yog hais tias koj sau ib yam dab tsi rau koj mobile ntaus ntawv, koj muaj peev xwm hloov nws mus rau hauv DVD los yog ntau lwm yam tawm tswv yim. Koj kuj siv tau qhov cuab tam yuav hloov yees duab los ntawm ntau lwm hom ntawv rau cov MP4 li ntawd, koj muaj peev xwm xa lawv hla lub Internet los yog qhia lawv rau mobile pab kiag li lawm.