MP4 vs MKV, M4V vs MP4, M4V vs MKV
MP4, M4V, thiab MKV yog cov ntaub ntawv video nrov siv hauv computer. MP4 thiab M4V zoo sib xws thaum MKV yog txawv kiag li hauv cov qauv. Conceptually lawv qhia tib lub hauv paus ntsiab lus ntawm theem pib.
MP4
MP4 yog hom ntawv ntim cov ntaub ntawv tsim los ntawm Moving Pictures Experts Group rau International Standards Organization, thiab nws yog raws li QTFF. Qhov tseeb, thawj qhov kev tso tawm ntawm hom ntawv yog ze li zoo ib yam rau QTFF. Tseem lawv muab cov qauv zoo ib yam, tab sis MP4 tau txav mus rau ncua sij hawm thiab tsim rau hauv lub thawv siab dua. Tam sim no nws yog ib feem tseem ceeb ntawm ISO raws li xov xwm cov ntaub ntawv hom qauv.
Widely used data streams in the MP4 file format is MPEG-4 Part 10 (H.264) and MPEG-4 Part for video and Advanced Audio Coding for audio streams. Sub titles siv MPEG-4 Timed Text cov ntaub ntawv ntws.
Txij li thaum pib txoj kev loj hlob raws li QTFF, ntau tus qauv ntawm MPEG-4 yog tib yam. Hauv Apple ib puag ncig (MacOS lossis iOS), cov ntaub ntawv no tuaj yeem siv sib hloov. Cov ntaub ntawv hom tuaj yeem hloov pauv yam tsis tau rov encoding video. Lub MP4 muaj qhov zoo ntawm kev muaj peev xwm tshaj tawm hauv internet thaum QTFF tsis txhawb qhov no. Tsis tas li ntawd, MP4 yog txaus siab los ntawm feem ntau ntawm cov OS platforms thiab video editing software. Cov zej zog nyob ib ncig ntawm tus qauv tau loj hlob, thiab kev koom tes los ntawm cov zej zog tau ua kom muaj kev vam meej ntawm tus qauv hauv kev lag luam; qee yam QTFF tsis txaus siab vim nws qhov muaj tswv.
MPEG4 cov ntaub ntawv siv.mp4 txuas ntxiv, tab sis nyob ntawm daim ntawv thov txuas ntxiv siv yuav txawv. Piv txwv li, cov ntaub ntawv suab nkaus xwb tuaj yeem siv.m4a txuas ntxiv. Raw MPEG4 video ntsis kwj yog muab lub.m4v extension. Cov ntaub ntawv video tawm tswv yim siv hauv cov xov tooj ntawm tes kuj yog kev txhim kho los ntawm MPEG4-12, thiab lawv siv.3gp thiab.3g2 txuas ntxiv. Cov phau ntawv suab siv.m4b txuas ntxiv vim qhov hloov pauv hauv cov cai tso cai rau bookmarking cov ntaub ntawv suab.
M4V
M4V yog kev txhim kho los ntawm lub thawv ntawv MP4. Nws tau tsim los ntawm Apple, kom haum raws li cov cai hauv iTunes thiab cov khoom lag luam. Txij li thaum MP4 yog raws li Apple's QTFF hom, nws yog tsim nyog hais tias M4V yog ib tug derivative ntawm QTFF.
Cov qauv ntawm MP4 thiab M4V yuav luag tib yam thaum Apple's FairPlay DRM (cov cai tswj hwm digital) kev tiv thaiv kev cai raug siv rau tag nrho cov ntaub ntawv M4V. Tsis tas li, nws txhawb A3C (Dolby suab) uas tsis yog tus qauv suab siv hauv MP4 hom.
Raws li tau npaj tseg, M4V yog thawj hom ntawv siv hauv iTunes ib puag ncig. Yog tias cov ntaub ntawv raug tiv thaiv, nws tuaj yeem qhib tsuas yog ntawm cov ntawv tso cai ntawm cov khoom lag luam kua lossis lub khoos phis tawj yuav tsum tau tso cai siv Apple iTunes. Yog tias cov ntaub ntawv tsis muaj kev tiv thaiv, nws tuaj yeem qhib los ntawm ntau lub software uas tuaj yeem qhib cov ntaub ntawv MP4.
Vim vim muaj qhov tsim nyog ntawm cov ntaub ntawv hom, qee zaum nws yuav nyuaj rau siv yog tias ua raws li cov txheej txheem tsim nyog. Nws nqa tag nrho qhov zoo ntawm MP4 hom nrog qhov tsis zoo ntawm cov ntaub ntawv tawm tswv yim.
YMKV
MKV yog hom khoom ntim tawm, uas yog ob qho tib si qhib thiab pub dawb. Nws muaj npe tom qab Lavxias teb sab zes menyuam roj hmab thiab hu ua Matroska Multimedia Thawv. Nws tau muab lub npe no tshwj xeeb vim tias lub thawv ntim muaj peev xwm tuav tau ib tus lej ntawm cov ntaub ntawv ntws hauv ib cov ntaub ntawv. Nws yog kiag li qhib specification thiab qhib qhov chaw platforms thiab software siv thiab txhawb nws ntau.
MKV cov ntaub ntawv tuaj yeem tuav ntau qhov kev tshaj tawm hauv tib cov ntaub ntawv. Piv txwv li, ib tug yeeb yam yuav encoded nyob rau hauv MKV kom muaj suab lem nyob rau hauv ob hom lus, nyob rau hauv tib cov ntaub ntawv. Txoj kev xav tau tuaj yeem xaiv tau thaum ua si. Tus kheej lem ntawm cov ntaub ntawv xov xwm tau txais kev cawmdim raws li ib tus neeg cov ntaub ntawv kab. Conceptually nws zoo ib yam li MP4 thiab AVI cov ntaub ntawv tawm tswv yim. Vim li no, nws yooj yim dua los kho thiab khaws cov ntaub ntawv multimedia hauv MKV hom thiab nws yooj yim khaws cov ntaub ntawv ntau tshaj plaws hauv ib cov ntaub ntawv.
Ntau tus xov xwm tawm rau lub qhov rais thiab Mac tam sim no txhawb cov hom ntawv MKV; yog tias tsis yog, txhim kho cov codec generic zoo li K-lite codec pob yuav pab kom cov neeg ua si khiav MKV cov ntaub ntawv.
MP4 vs M4V vs MKV
• MP4 yog tsim los ntawm MPEG ntawm ISO, raws li QTFF, thiab tam sim no siv los ua tus qauv kev lag luam. M4V yog ib tug derivative ntawm MP4 hom thiab tsim los ntawm Kua yuav siv tau nyob rau hauv lawv cov khoom raws li ib tug proprietary ntaub ntawv hom. MKV yog lub thawv qhib kiag li.
• MP4 tuaj yeem suav nrog video, suab, ntawv nyeem, thiab lwm yam xov xwm hauv ib cov ntaub ntawv. M4V tau txais cov cuab yeej no los ntawm MP4. Hauv MKV, txhua lub suab, video, lossis lwm yam xov xwm tuaj yeem suav nrog hauv tib cov ntaub ntawv.
• MP4 yog dav txhawb los ntawm kev lag luam software thiab kho vajtse. Kev Tiv Thaiv M4V tsuas yog txhawb nqa los ntawm cov khoom lag luam Apple uas muaj ntawv tso cai lossis cov khoom tso cai los ntawm Apple los ntawm iTunes. MKV yog txhawb los ntawm ntau software thiab platforms, tab sis tsis ntau npaum li MP4. Cov codecs ntxiv tuaj yeem ntsia tau siv cov ntaub ntawv MKV.
• MP4 yog siv dav rau kev tshaj tawm online, thiab M4V tau txais qhov no. MKV tsis zoo li siv hauv online media streaming.
• MP4 tsis siv A3C (Dolby suab) thaum M4V yog tsim los txhawb A3C.
