Guqula 3GP ukuba PNG

Guqula Eyakho 3GP ukuba PNG amaxwebhu ngokulula

Khetha iifayile zakho

*Iifayile zicinyiwe emva kweeyure ezingama-24

Guqula iifayile ezifikelela kwi-1 GB simahla, abasebenzisi bePro banokuguqula iifayile ezifikelela kwi-100 GB; Bhalisa ngoku

Iyalayisha

Indlela yokuguqula 3GP ukuba PNG

Inyathelo 1: Rhweba ngaphakathi 3GP iifayili usebenzisa iqhosha phezulu okanye nge shift nendawo.

Inyathelo 2: Nqakraza kwiqhosha 'Uguqulo' ukuqala uguqulo.

Inyathelo 3: Gcina ifayile yakho eguqulweyo PNG iifayile

3GP ukuba PNG Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndizikhupha njani iifayili kwi-3GP video njengeemifanekiso ze-PNG?

Layisha phezulu ifayili ye-3GP kwaye umguquli ubonisa umkhethi wesakhelo-sokukhupha: isakhelo ngasinye se-Nth, ii-frames kwi-timestamps ezichaziweyo, okanye i-frame enye ngesekondi. Isakhelo ngasinye esikhethiweyo sikhowudiwe njengefayili ehlukileyo ye-PNG kwaye sidityaniswe njenge-ZIP yokukhuphela.

Umfanekiso okhuphiweyo we-PNG uphuma njani kwisisombululo esipheleleyo?

Ubungakanani obufanayo njenge-3GP video — umthombo we-1080p uvelisa i-1920×1080 PNG iifayili; umthombo we-4K uvelisa i-3840×2160 PNG iifayili. Yenza kwakhona ubungakanani emva kokukhupha ukuba ufuna iithumbnails ezincinci.

Ndingayikhupha isakhelo ngasinye kwifayili ye 3GP njenge PNG?

Ewe, kodwa uqaphele ngobalo lwefayili - i-30fps 1-minute video ivelisa ii-frames ezili-1,800. Sizifaka kwi-ZIP archive ngokuzenzekelayo. Kwiiclip ezide sebenzisa ukhetho "1 ngesekondi" (i-frames ezili-60) okanye iziqinisekiso zexesha ezikhethekileyo.

Ingaba imifanekiso ye-PNG iya kugcina umbala wokwahlulahlula i-3GP?

Ewe - umbala uguqulwa umbala nge-matrix efanayo esetyenziswa ngumbhali 3GP (BT.709 ye-HD, BT.2020 ye-4K HDR). Ababhali be-HDR babekwa kwi-tone-mapping ye-SDR xa bekhupha kwi-PNG (i-PNG / JPG ayikwazi ukugcina amanqanaba e-pixels e-HDR ngokusemthethweni).

Lithini ubungakanani befayili yesakhelo esitsha se-PNG?

Kuxhomekeke kwisisombululo kunye nokhetho lwe-codec. I-1080p PNG frame yi-2-5 MB; i-1080p JPG quality-85 frame yi-200-500 KB. Yandisa ngokubala i-frame ukuze ubungakanani be-ZIP — kwinqanaba eliphezulu, ukususwa kwe-frame nganye ye-10-min 1080p video kwi-PNG yi ~50 GB.

Ingaba i-PNG ekhutshweyo igcina i-EXIF metadata yekhamera?

Isiqulathi seefayili 3GP asigcinanga i-EXIF yesakhelo ngasinye ngendlela ikhamera ehlala isebenza ngayo, ngoko ke iifayile ze PNG ziphuma nge-EXIF engenanto. Sifaka `creation_time` indawo ebonisa i-timestamp yesakhelo somthombo ukuze uphinde ulungelelanise i-bundle.

Ithatha ixesha elingakanani ukususwa kwesakhelo ukusuka kwi-3GP ukuya kwi-PNG?

Ukutsala isakhelo kukhawuleza — ngokuqhelekileyo 20-30% yobude bomthombo kwindlela eqhelekileyo yokuhambisa. I-5-imizuzu 3GP → PNG bundle igqiba malunga nemizuzu emi-1 ngaphandle kokuxhomekeka kubalo lwesakhelo, kuba i-bottleneck yi-PNG encoder, hayi i-demuxer.

Ndingazikhuphela njani ii-frames kwixesha elikhankanyiweyo kwi-3GP video?

Ewe - ukhetho oluphambili luyakwamkela uluhlu oluhlukaniswe nge-comma lweziqinisekiso zexesha (umzekelo `00:01:23,00:05:00,00:10:42`) kwaye luvelisa ifayili enye ye-PNG ngesatifiketi sexesha. Isetyenziswa kwizifundo ezincinci okanye iziganeko ezibhekisa kuzo.

Ingaba i-3GP video yam ifihlakele ngexesha lokususa isakhelo?

Ewe - imodeli yobumfihlo efanayo neyokuguqulwa ngasinye. Ividiyo yombhalo kunye neefreyimu ezikhuphiweyo ziqhubekekiswa kubasebenzi ababekwe ngokuzimeleyo kwaye zicinywe kwimizuzu.

Kutheni i-PNG isakhelo sam esikhutshweyo simnyama?

I-motion blur ihlala ivela kumgca ovela kumgca ovela kwi-3GP (ikhamera yayihamba xa isakhelo sathathwa). Zama ukukhetha i-timestamps ukusuka kwimiboniso ehlala ikhona, okanye uthathe ii-frames ezininzi ezibekwe phantsi uze ukhethe ezicacileyo. I-pipeline ayiqwalaseli ukubonakala.

Ingaba le sixhobo sixhasa ukutsala isakhelo esinye ngasinye kutshintsho lwendawo yomboniso?

Akukho kutyibiliko olusisiseko - sebenzisa ukhetho "1 ngomzuzwana" njengokwenkxaso, emva koko ukhethe ngokubonakalayo iifayili zotshintsho lwendawo. Umqokeleli wokufumana indawo okhethekileyo ukwi-roadmap.

Ndingasebenzisa i-PNG isakhelo esikhutshweyo ngokurhweba?

Ewe, ngokuxhomekeke kwilayisensi elawula umthombo 3GP imixholo. Utshintsho lwefomati aluyi kuzisa naziphi na izilumkiso — asiyi kudibanisa naziphi na izilumkiso ze-watermark kwaye asiyi kuzisa naziphi na izilumkiso zelayisensi kwimveliso ye PNG.