3GP Amathuluzi

Guqula 3GP kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana 3GP

I-3GP iyifomethi yesitsha semultimedia eyenzelwe omakhalekhukhwini be-3G. Ingagcina idatha yomsindo nevidiyo futhi ivamise ukusetshenziselwa ukudlalwa kwevidiyo yeselula.

Ukusetshenziswa Okuvamile

Mobile video
3G streaming
Phone video

3GP Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele levidiyo le-3GP?

I-3GP iyibhokisi levidiyo eligcina eyodwa noma ngaphezulu kwevidiyo, ama-tracks omsindo, kanye ne-subtitles akhethiwe. Ibhokisi elilodwa lisekela ama-codecs ahlukene, ngakho-ke ukuhambisana kuxhomekeka ku-wrapper kanye nokuthi yini ngaphakathi. Amafayela we-3GP ancane futhi aguqula ikhodi ku-hardware encane kakhulu engingacabanga ngayo, ngakho-ke amafoni akhethekile nama-handset aphansi-end ahlala erekhoda.

Ingabe ihele 3GP lifana ne MP4 ngaphansi?

Isakhiwo sabo sifana kakhulu. 3GP ikhiwa kusuka ku-ISO Base Media File Format box layout isebenzisa i-MP4 — umhlahlandlela we-atoms ogcina idatha yemidiya kanye ne-index ekhuluma lapho ifreyimu ngayinye iqala khona. Lokhu kusho ukuthi ukushintsha phakathi kwabo kuvame ukuba yi-rewrap ngaphezu kokuphinda-code: ama-streams akopiwe ngaphandle kokuchofoza futhi i-wrapper kuphela ibhalwe kabusha, okuthatha amasekondi ngisho kwifayela le-feature-length. I-3GP iyibhokisi le-3GPP elijwayelekile lefoni ephathekayo, lapho ividiyo idinga ukuhambisana ne-176x144 screen ne-2G data plan.

Kungani ifoni yami igcina konke njenge 3GP?

Ngenxa yokuthi i-handset ikhonjiswa kunoma yini i-chip yayo eyenza kwi-hardware, futhi 3GP yilokho okuhlelwe ngaso i-silicon. Ikhamera i-app ayibuzanga — ibhala ifomu elisetshenziswa likwazi ukulikhiqiza ngezinga lefreyimu eligcwele ngaphandle kokufudumeza. Ukushintsha ngemuva kujwayelekile futhi akudingeki lutho kukhwalithi uma ukhetha okudingayo okugcina u-payload ofanayo.

Kungani isiphequluli sami singadlala ihele 3GP?

Amabhuleki athumela ama-decoders kuluhlu oluncane lwefomethi, futhi 3GP ayikho kulo — ilayisense, i-codec ehlukene evumela, noma nje ubudala bayo bugcina bungaphandle. Ihele alilahlekile futhi umdlali wedesktop uzovula, kodwa akukho okwenziwayo kukhasi kuzokwenza ibhuleki liyibonise. Ukushintsha ukuguqula kube nendawo yokugcinwa ye-web-native kuyindlela ethembekile kuphela yokudlala ngaphakathi. I-3GP iphele ngezinhlamvu eziphansi kanye nesandi sokukhuluma esisezingeni eliphansi; ukuphakama kwayo ngeke kubuyisele imingwane engazange ithathwe.

Ingabe 3GP izodlala kufoni noma TV ngaphandle kokushaya ibhayisikili?

Ngokuvamile, yebo, ngoba ama-chips efonini, ama-tablets nama-television afaka ikhophi le-payload e-silicon ekhethekile, hhayi kwi-processor eyinhloko. Lokhu kuyinkinga phakathi kwevidiyo edlala i-cool ngehora elilodwa nelinye elifaka ikhofi ledivayisi futhi liyihlanze imizuzu eyisithupha. lapho ifomu lihla khona, i-app ixhasa i-app, hhayi uku-decode — i-codec iyilungile, i-wrapper yilokho i-gallery app ingakanani. 3GP igcina H.263 noma MPEG-4 Ingxenye 2 ividiyo nge AMR narrowband ukukhuluma umsindo, zonke tuned for minimal bitrate hhayi quality.

Ingabe kufanele ngigcine amafayela amasha njenge 3GP?

Uma nje kukhona okuthile okudingayo. Ifomethi ivuliwe, futhi akukho sidingo sokushintsha ingobo yomlando ongeke ukwenze kube nzima, kodwa akuyona indawo lapho ithuluzi noma umphumela uhamba khona. Kunoma yini entsha, ifomethi yamanje ayidingi lutho olungeziwe futhi ivimbela ukulandelana kwesifundo seminyaka eminingana kusukela manje.

Ingabe izihloko ezingezansi zihamba lapho kuhele 3GP?

Ngakwesokudla, noma ngaphakathi kwesithombe. 3GP ayinaso isingeniso sesihloko sesihloko, ngakho izinketho ezimbili yi-sidecar.srt ifayela umdlali efaka ngakwesokudla kwevidiyo, noma ukushaya umbhalo emafreyimu ngesikhathi sokucindezela kabusha. I-sidecar igcina isingeniso sesihloko esihleliwe futhi esishintshayo kodwa ihamba njengefayela lesithathu elilula ukulahleka; ukushaya ngaphakathi kuqhubeka noma yikuphi ukudluliswa kodwa akukwazi ukuvalwa ngemuva.

Kungani i-audio track eyodwa kuphela ehlala e 3GP yami?

Ngenxa yokuthi lokhu konke ifomu liyithatha ngokunethezeka. Izinhlamvu zomsindo ezingeziwe zingabhalwa ku 3GP, kodwa ukuxhaswa kokudlala ngemuva kokuqala akulingani kahle kakhulu ukuthi amathuluzi amaningi agcina kuphela elinye futhi asuse ezinye. Uma umsuka unesihloko noma ulwimi lwesibili, khipha lezi ukuze uhlukanise amafayela omsindo ngaphandle kokuthembela kuwo kubhokisi elifihlayo.

Kungani uguqula 3GP ku omunye video format?

Ukushintsha 3GP MP4 uma ufuna ukusakaza jikelele - amabhuleki web, amadivayisi mobile, smart TVs kanye ukuhlela amathuluzi wonke adlala MP4 natively. Ukushintsha WebM for web embedding lapho ncane ifile ubukhulu izinto. Ukushintsha MOV uma usebenza Final Cut noma ezinye Apple-native pipelines.

Ingabe ukuguqulwa kwe-3GP kuphinde kukhodeze ividiyo?

Uma umsuka codec ngaphakathi 3GP ihambisana nengxenye efanele isiqukathi si remux ngaphandle kokuphinda-encoding (fast, lossless). Uma codec kufanele ushintshe (umzekelo HEVC to H.264) ividiyo iphinde-encoded — slower, nge ncane generational quality cost.