Txhua yam hais txog Compressing lub yees duab

Yuav hlob tus yees duab nrog QuickTime Player Pro

Cov kauj ruam qhia kev loj hlob muaj yees duab nrog resizing ib video qhov ntev, zuj zus lawm cov kablus me me thiab tom cov video ntawv. Txo cov video clip nrog lub kua QuickTime Player xav tau muas hu ua QuickTime Pro (vim dawb ib tsab ntawm QuickTime Player tsis pub kom compressing los yog dispatching yees duab) version ib cov hloov tshiab thiab khiav los ntawm nws cov customized export taug txoj cai.

Cov kauj ruam hauv qab no yuav tsum ua ib video compression siv QuickTime Player Pro yog:

Kauj ruam 1. Download tau QuickTime thiab kho nws kom pro version

Download tau QuickTime Pro tawm hauv qhov chaw thiab pom zoo los ntawm kev siv lus thiab nruab tom koj lub computer. Nqus cov daim ntawv tso cai rau nws vim export thiab yees duab compression tshuab raj enabled rau them version ntawm no neeg uas ua ntawv. Xaiv tej software raws li koj qhov system operating vim muaj ob tug lwm yam kev tso lus muab tawm coj mus muag: muas rau tej qhov rais thiab muas rau Mac.

Kauj ruam 2. Ntxiv cov ntaub ntawv rau qhov kev pab cuam

Nyob rau theem no, neeg mus txog rau "Cov ntaub ntawv" tshuab raj thiab nias rau ntawm "Qhib cov ntaub ntawv" mus ua si ib video clip. Ces qhov rais browser ntaub ntawv yuav qhib xaiv tej daim video. Tam sim no, koj yuav tuaj ua koj tej ntaub ntawv thiab qhib lub yees duab ua si rau nws. Yees duab no yuav siv li input yees duab rau cov hlob zov me nyuam.

Kauj ruam 3. Sync suab nrog lub yees duab

Ua si koj tus yeeb yam thiab nco ntsoov tias lub suab syncs tuaj nrog cov yees duab. Yog lub suab pib kom ntxov thiab koj yuav tau ntxiv ib co muab tub lim lub thaum nws yuav mus sync, uas yog yooj yim dua li lwm pab tshaj li QuickTime.

Thaum koj lub suab thiab yees duab no synced koj nraum rawm export cov ntawv siv rau hauv web.

Kauj ruam 4. Lub yees duab export

Nyem qhov ntawm "Cov ntaub ntawv" tab thiab xaiv "Export" qhib qhov "Tseg Exported ntaub ntawv raws li" screen. Tam sim no tau nyem rau ntawm qhov option "Export" nyob hauv qab ntawm cov zaub mov thiab xaiv qhov "Movie rau QuickTime Movie" rau tej chaw lub thiab video.

Qhov no yuav ua rau cov lus nram qhov chaw uas koj ntaus tau lub npe tshiab rau cov yeeb yam tshiab khiv uas ua cov ntaub ntawv. Thov nias rau "Xaiv" khawm tom qab rau lub thiab video nqis.

Kauj ruam 5. Hloov cov tsev koom

Tom qab koj txhaj khawm "Xaiv" qhov screen nram qab no yuav tuaj. Ntawm no, koj yuav tsum hloov lub chaw nyob rau hauv "Kev yees duab" thiab muaj "Suab" xaiv rau tus npaum compression.

Kauj ruam 6. Hloov cas compression

Tam sim no "Cov chaw" khawm hloov "compression hom" koj yees duab rau ib lub me ntsis ntawv xaiv. Kom txhob muaj raws li cov video muaj tshuav me me ntawm kev tsaus nti tsis zoo. Yog tsis meej raws nraim uas tej chaw uas yuav siv tau rau ib cov video zoo yuav nyob rau lwm daim video tib tom qab compression. Thov cov yees duab hauv qab no predetermined yog tus pib rau H.264 compression.

Hloov cov video qhov ntev thiab kablus me me, nias lub pob kom "Loj" thiab xaiv ib sab sizing xaiv. Video qhov chaw hauv qab no yog muab ntawm no:

• Codec: H.264
• Txoj kev: 2-Pass VBR
• Cov ntaub ntawv npaum: 466 Kbps
• Luaj li cas thiab: 576 W 432H
• Xaiv nam piv: Muaj nam piv
• Thiab tus nqi: 1:1 num/Sec
• Tseem ceeb thiab txhua: 100 ntas

Lub suab sab, siv cov lus nram qab no:

• Codec: Fraunhofer MP3
• Cov ntaub ntawv npaum: 48 Kbps
• Raws li cov qauv: 16
• Coj tus nqi: 22050
• Raws: lub tso suab

Kauj ruam 7. Pib kev hlob

Nyem "Ywm" ob zaug tawm tej chaw thiab rov qab mus rau qhov "Tseg Exported ntaub ntawv raws li" screen. Ntxig ib lub npe tshiab rau generated compressed tej ntaub ntawv thiab muab ib qho chaw nyob rau hauv lub computer nyuaj tsav mus yuav nws tseg.

Nias lub pob kom "txuag" rov compressing thiab exporting cov yees duab.

Nyob rau saum tus piv txwv li, cov ntaub ntawv yeej loj yog MB 300 tawm thiab compressed los ntawm txoj kev compression H.264. Tab sis muaj ib co lwm codec rau compressing tej ntaub ntawv video. Lub compression yuav tsis zoo li ntawd yuav txo tau kev loj. Ntawm no, ib comparative tsom xam rau lub txawv codec muab rau tib daim tseem. Txhua yam zoo configurations yuav txheem configurations, tib yam sizing, thiab cov kablus tus nqi cia unchanged ua tus thawj captured ntsia, nrhav ntas teem rho tau rau qhov kev tsom xam.

Codec	Hnub twg	Raws li cov compressed	Remark
H.263	191.02 kbps	1.03 MB	Nws yog tus txheem codec video txuas lus thiab ua compression.
H.264	163.11 kbps	904.92 KB	Nws tseem tshiab khiv nkag tau codec rau QuickTime Pro 7. Txo qhov luaj li cas nraaj.
Sorenson yees duab 3	256 kbps	1.38 MB	Nws yog codec lug siv. Kev yees duab compressed yog xam thiab tseeb. Tiam sis yog peb piv no nrog H.264, lub loj (encoded Sorenson yees duab 3) tej ntaub ntawv yog li 56% ntau dua qub ntawv encoded rau hauv H.264.
MPEG4 (yooj yim)	68.18 kbps	378.21 KB	Tsis zoo yeej tsis siv tau. Yees duab encoded hauv ntsis tsis tshua muaj heev npaum li cas.
MPEG4 (zoo tuaj)	277.83 kbps	1.5 MB	Video zoo no MPEG-4 yog distasteful. Codec MPEG-4 txheej txheem yog newer dua Sorenson yees duab 3. Nws saib kuas zoo hab muaj ntsis-tus nqi tiam sis compressed me me no me ntsis siab kuj.