Yuav ua li cas yog bitrate? Yuav ua li cas lawv muaj kev cuam tshuam zoo ntawm cov suab paj nruag thiab yees duab?

Lub bitrate yog qhia raws li ib tug ntawm lub ntsiab yam ntxwv ntawm video thiab kaw suab. Feem ntau cov neeg yog siv los xav hais tias nws txiav txim zoo ntawm cov uploaded ntaub ntawv. Tab sis dab tsi yog qhov bitrate thiab yuav ua li cas lawv ua tau piav qhia txog cov suab paj nruag ntaub ntawv thiab video clips? Cia peb kawm no nyob rau hauv ntau yam.

Yuav ua li cas yog bitrate?

Bitrate - ib tug nqi uas hais tias tus xov tooj ntawm daim ntaub ntawv (kilobits los yog megabits), embedding nyob rau hauv ib tug thib ob cov ntaub ntawv playback. Raws li, nws yog ntsuas nyob rau hauv megabits ib ob (Mbps) los yog kilobits ib ob (Kbps). Txwv tsis pub, lub ntsis nqi yuav piav raws li lub dav ntawm lub bandwidth. Qhov no feature yog ib qho tseem ceeb rau cov neeg uas xav kom hloov cov ntaub ntawv, vim hais tias nyob rau tib lub ntev ntawm ntau bitrate yuav ua rau kom cov ntaub ntawv. Nyob rau hauv tas li ntawd kom loj, ces yog lub suab zoo. Txo qhov luaj li cas los ntawm tej lub me ntsis nqi yog hu ua compression.

Common music hom MP3 yog ib qho suab ntaub ntawv no yog compressed mus cuag ib tug twg uas nyob rau ib tug qauv disc tau tuav txog rau 12 teev ntawm cov suab paj nruag. Qhov zoo tshaj tseem siab vim psychoacoustic compression: tag nrho cov ntau yam ntawm lub suab yog ntxuav nrog lub frequencies thiab ntau ntau ntawm volume uas yog tsis ntes los ntawm cov tib neeg pob ntseg. Xaiv suab yog tsim nyob rau hauv nyias muaj nyias ib chav hu ua ntas. Ntas yog tib ntev thiab suab yog compressed los ntawm ib tug muab algorithm. Thaum ua si rau cov suab paj nruag, lub teeb liab yog reconstructed los ntawm lub decoded blocks nyob rau hauv ib theem zuj zus.

Yuav ua li cas yog kheev siv compression?

Suab bitrate feem ntau yog 256 kbit / s. Nrog rau qhov no tus nqi lub suab txias compressed ntawm ib tus nqi ntawm kwv yees li 6 lub sij hawm, thiaj li nyob ib disc tau sau mus rau 6 lub sij hawm ntau music tshaj ua ntej compression. Yog hais tias ib tug qis me ntsis nqi mus txog rau 128 kbit / s, nws yuav haum rau ib tug disc muaj 12 lub sij hawm ntau suab paj nruag, tab sis lub suab zoo yuav muaj ntau yam qis. Music kaw li 128 kbit / s, feem ntau caw mus mloog tus Internet, uas yog. Yuav kom. Nyob rau hauv pursuit zuj zus cov kev ceev ntawm chaw thau khoom nplooj ntawv yog cov tswv ntawm cov kev pab yuav ua rau tej kev txi. Muaj ntau cov neeg siv hais tias nws zoo nyob deb ntawm zoo tagnrho.

Tam sim no, thaum nws los ua tseeb hais tias xws li me ntsis nqi, nws yog lub sij hawm los mus txiav txim lawv pom theem. Ob amateurs thiab cov tub txawg sib ceg endlessly li bitrate muaj feem xyuam rau cov suab zoo thiab seb nws muaj feem xyuam rau. Suab paj nruas albums, feem ntau yog qhia me ntsis nqi. Ib tug thiab tib yam disc kaw li 128 kbit / s thiab 256 Kbit / s, yuav sib txawv nyob rau hauv nqe ob zaug.

Lub pom me ntsis nqi rau txawv mloog tej yam kev mob

Rau ntau tus neeg, ib tug kaum ob compression tsis muaj kev puas tsuaj, thaum lwm tus neeg cam thawj hais tias lawv muaj peev xwm tsis mloog suab paj nruag ntawm sab bitrates tshaj 320 Kbit / s. Paradoxically, txoj cai thiab cov neeg thiab lwm tus. Qhov tseeb hais tias thaum kawg qhov zoo tshaj ntawm kev ua si tsis yog nyob ntawm seb cov neeg kawm ntawv ntawm compression, thiab cov playback tej yam kev mob, thiab txawm lub hom suab paj nruag.

Piv txwv li, lub song no yog ua si nyob rau hauv ib daim kab xev recorder ntsia tau rau hauv lub domestic tsheb. Nyob rau hauv xws li ib tug cov ntaub ntawv, qhov zoo tshaj ntawm 192 kbit / s yuav txaus. Dua me ntsis nqi yuav txhim kho lub suab zoo, tab sis qhov sib txawv yuav tsis tau hnov li vim lub high suab nrov theem thaum lub sij hawm mus ncig teb chaws. Yog hais tias lub suab paj nruag yog ua si nyob rau hauv koj lub tsev computer los yog portable music neeg uas ua ntawv, nws yuav siv sij hawm tsawg kawg yog 256 kbit / s. Yog hais tias lub teeb liab yog tsis yuav hloov, yog kis tau mus rau lwm tus ntaus ntawv thiab tso tawm nyob rau hauv kim mas kem, nws yuav tsum tau mus rau chaw uasi mus rau lub yam tsawg kawg nkaus compression. Nws yog tau nrog ib tug bitrate ntawm 320 kbit / s.

Lub pom bitrate rau txawv suab paj nruas yeej

Music nrog ib tug high school cov ntsis nqi yog tsis ib txwm tsim nyog. Nrov music feem ntau suab zoo heev nyob hauv bitrates ntawm 192-256 kbit / s. Ntau dua zoo yuav tsum tau muab teem, tab sis lub siab nyob rau hauv no: pop zaj nkauj yog cov luv luv-nyob, yog li txuag disk qhov chaw yuav tsum muaj feem thib ib. Nyob rau hauv tas li ntawd, qhov zoo tshaj ntawm tus thawj kaw, ib yam nkaus thiab nruab nrab, yog li ua lub ntsis nqi yuav tsis muaj kev cuam tshuam rau qhov zoo ntawm cov ntaub ntawv raug ua si. To listen rau cov thauj thiab kev ob tog ntawm nruab nrab zoo yog txaus.

Yog hais tias peb yuav sib tham txog classical music, tej hauj lwm ntawm lub legendary pob zeb qhab los yog tsawg copyright songs, qhov zoo tshaj yuav tsum ceeb heev. Thaum twg koj yuav yog ib tug music yuav tsum tau saib nyob rau ntawm lub ntsis nqi teev nyob rau hauv lub disc ntim. Yog hais tias ib tug song yog downloaded ntawm lub Internet, tej ntaub ntawv yuav tsum muaj nyob rau ntawm lub download tau nplooj. Nyob rau hauv tas li ntawd, lub ntsis nqi yog tso tawm nyob rau hauv cov neeg uas ua thaum lub sij hawm playback.

bitrate video

Peb hais ua ntej lawm hais tias ib tug bitrate suab. Tab sis dab tsi yog qhov bitrate ntawm tus yees duab? Muab hais tias tus yees duab no yog ua si rov qab raws li ib tug sib lawv liag ntawm suab thiab cov dluab, lub ntsiab txhais yog tib yam bitrate. Qhov kuaj pom ntawm ib tug video series hnyav zog cov ntaub ntawv, tab sis thaum kawg rau cov duab processor - yog tib yam sawv daws yuav thiab zeros, zoo li suab. Lub hauv paus ntsiab lus ntawm encryption yog tib yam rau tag nrho cov hom ntaub ntawv.