I-HEIF ingcono kunoma iyiphi indlela ifomethi entsha yefayili yesithombe ingaba
I-Apple yamukele ifomethi entsha yesithombe esibizwa ngokuthi i-HEIF (i-High Efficiency Image Format) ngo-2017. Ibiza ukusetshenziswa kwayo kwale fayela yefayela 'HEIC' futhi, nge iOS 11, ithathe indawo yefomethi yefayela ebizwa ngokuthi i- JPEG (ebizwa ngokuthi i-Jay-Peg) ne-HEIF i-HEIC (High Efficiency Image Container) ehambelanayo.
Yingakho kubalulekile: ifomethi igcina izithombe ngekhwalithi engcono ngenkathi ithatha indawo encane yokugcina.
Izithombe Ngaphambi kwe-HEIF
Kuthuthukiswe ngo-1992, ifomethi ye-JPEG yaba yimpumelelo enkulu kulokho okwakunguyo, kodwa yakhiwe ngesikhathi lapho amakhompiyutha ayengenakwazi njengamanje.
I-HEIF isekelwe ebuchwepheni bokuthuthukiswa kwevidiyo esithuthukisiwe eyenziwe yiqembu le-Motion Picture Experts Group, i-HVEC (eyaziwa nangokuthi i-H.265). Yingakho ikwazi ukuthwala ulwazi oluningi.
Indlela i-HEIF isebenza ngayo kuwe
Nakhu lapho i-HEIF isebenza khona ezweni langempela: ikhamera ku-iPhone 7 ingathatha ulwazi lombala we-10-bit, kodwa ifomethi ye-JPEG ingathatha umbala ngo-8-bit. Lokhu kusho ukuthi ifomethi ye-HEIF isekela ukukhanya futhi ingakwazi ukuphatha izithombe ngo-16-bit. Futhi thola lokhu: isithombe se-HEIF sinamaphesenti angu-50 amancane kunesithombe esifanayo esilondolozwe kwifomethi ye-JPEG. Leso sithombe esicindezelekile kusho ukuthi kufanele ukwazi ukugcina izithombe eziningi kabili ku-iPhone yakho noma kwenye idivayisi ye-iOS.
Enye inzuzo enkulu ukuthi i-HEIF ingaba nezinhlobo eziningi zokwaziswa.
Ngenkathi i-JPEG ingathwala idatha equkethe isithombe esisodwa, i-HEIF ingaba nemifanekiso emibili kanye nokulandelana kwayo-ifana nesitsha. Ungagcina izithombe eziningi, futhi ungafaka umsindo, ukujula kolwazi lwensimu, izithonjana zezithombe nolunye ulwazi lapho.
I-Apple ingayisebenzisa kanjani i-HEIC?
Lokhu kusetshenziswa kwe-HEIC njengesiqukathi semifanekiso, amavidiyo, nolwazi oluhlobene nesithombe lisho ukuthi i-Apple ingacabanga ngokwenza okuningi ngekhamera nemifanekiso yakho ye-iOS.
I-iPhone 7's Portrait Mode iyisibonelo esihle sokuthi inkampani ingase isebenze kanjani nalokhu. Imodi yokubukwa idonsa izinguqulo eziningi zesithombe futhi izigxilisa ndawonye ukuze zenze izithombe ezingcono kakhulu ngekhwalithi ephezulu kakhulu kune-JPEG.
Ikhono lokuthwala ulwazi olujulile lensimu ngaphakathi kwesitsha se-HEIC singenza i-Apple isebenzise ifomu elicindezelekile njengengxenye yobuchwepheshe obungokoqobo obusebenzayo obusebenzayo.
"Umkhawulo phakathi kwezithombe namavidiyo uphambene, futhi okuningi kwalokho esikubambayo kuhlanganiswa kokubili kwalezi zimpahla," kusho i-Apple VP Software, iSastien Marineau-Mes kuWWDC.
I-HEIF ne-HEIC Work kanjani?
Abasebenzisi be-Mac nabakwa-iOS bafake i-iOS 11 ne-MacOS High Sierra bazothunyelwa ngokuzenzakalelayo kufomethi yesithombe esisha, kodwa kuphela izithombe abazibamba ngemuva kokuthi zithuthuke zizogcinwa kule fomethi entsha.
Zonke izithombe zakho ezindala zizogcinwa kufomethi yazo yesithombe esivele ikhona.
Uma kuziwa ngokuhlanganyela izithombe, amadivaysi akwa-Apple azovele aguqule i-HEIF izithombe zibe yi-JPEGs. Akufanele uqaphele lokhu kukhishwa kwe-transcoding.
Lokhu kungenxa yokuthi i-Apple inikeze izinga levidiyo ye-HVEC ngaphakathi kwe-iPhone ne-iPad yehadiwe kusukela kuqala ukuletha lezo zimveliso. I-iPads, i- iPhone 8 uchungechunge ne- iPhone X ingafaka ikhodi futhi ihloniphe izithombe kwifomethi yevidiyo masinyane. Kuyafana lapho uphatha i-HEIC.
Lokhu kusho ukuthi uma uthumela i-imeyli isithombe, thumela nge-iMessage, noma nje usebenzise kuwo uhlelo lokusebenza olungenalo ukusekela kwe-HEIF, idivayisi yakho izoyiguqula ngokuthula ibe yi-JPEG ngesikhathi sangempela bese iyithuthela ku-HEIC.
Njengoba i-iOS nabasebenzisi be-MacOS beya emfomeni entsha uzobona izithombe eziningi futhi ezithwala isandiso segama lefayela .heif, okusho ukuthi igcinwa kwifomethi.