IiCodecs: Zeziphi Kwividiyo?

ngo kim Ukuhlaziywa: Juni 27, 2022

Codec ziyinxalenye ebalulekileyo yenkqubo yokuvelisa ividiyo. IiCodecs yiseti yealgorithms ezisetyenziswayo cinezela kwaye ucinezele ividiyo kunye neefayile zeaudio. I-codec ibalulekile ekunciphiseni ubungakanani beefayile, ikuvumela ukuba udlulise kwaye uzigcine ngokukhawuleza.

Kweli nqaku, siza kwazisa ukuba yintoni codecs, basebenza njani, kunye nabo ukubaluleka kwinkqubo yokuvelisa ividiyo.

Inkcazo yeKhodekhi

Ikhodekhi yitekhnoloji efaka iikhowudi kwividiyo, iaudio kunye nemijelo yedatha kwifomu yedijithali. IiCodecs zicinezela idatha ukuze ithathe indawo encinci yokugcina okanye yokuhambisa, kwaye iphucula umgangatho wevidiyo okanye umjelo womsindo ngokuphucula imbonakalo yayo okanye isandi.

IiCodecs zisetyenziswa kakhulu ekusasazeni ifilimu, iTV kunye nomculo kwi-Intanethi. Iinkonzo zokusasaza kwi-Intanethi njenge Netflix, iVidiyo yeNkulumbuso yeAmazon kunye neSpotify sebenzisa ii-codecs ukucinezela umxholo wazo ngaphandle kokuthomalalisa umgangatho. Ukufakwa kweekhowudi kwiividiyo ezineekhowudi eziphambili kunokuzenza zibe ncinci ngobungakanani ngelixa zigcina umgangatho wemithombo yomthombo. Oku kuvumela iinkonzo zokusasaza ukuba zisasaze ngokulula iividiyo kubathengi ngaphandle kokubeka iindleko ezinkulu ze-bandwidth kuthungelwano lwabo okanye iziseko.

Ukongeza ekwenzeni ukugcinwa okusebenzayo kunye nokuhanjiswa, ii-codecs zinokubonelela ngezinye izibonelelo ezininzi kubaboneleli be-intanethi abanjengo:

• Amaxesha okulayisha ngokukhawuleza
• Ukuphuculwa kwamandla okusebenza
• Ukuchaneka okungcono
• Ukonyuka kokuhambelana kwesixhobo

Iicodecs zingasetyenziselwa iinjongo zokhuseleko ngu uguqulelo oluntsonkothileyo iifayile zesiqulatho ukuze kuphela abasebenzisi abagunyazisiweyo abanokufikelela kuzo.

Indima yeeCodecs kwiVidiyo

Codec, isifinyezo se-"coder-decoder", zi-algorithms ezinoxanduva lokucinezela kunye nokunciphisa iifayile zevidiyo kunye ne-audio. Ngokusebenzisa iindlela ezikhethekileyo zokucinezela, ii-codecs ziyakwazi ukunciphisa ubungakanani bevidiyo kunye neefayile zeaudio ngaphandle kokuphulukana nomgangatho. Oku kwenza ukuba ukhuphelo olukhawulezayo kunye nezantya zokukhuphela - nokuba udlala imuvi okanye udlala umdlalo kwi-intanethi- kunye nokuthatha indawo encinci kakhulu kwi-hard drive yakho.

Ukongezelela, ii-codecs zikwasetyenziswa xa urekhodwa kunye nedatha yevidiyo emva kokucubungula ukudala imifanekiso ephezulu yesisombululo enokwenzeka ngeendlela ezahlukeneyo zefreyimu, i-bitrate, ubunzulu bemibala njl. 4K isisombululo okanye i-HD - ukwenzela ukuba kuphuculwe amava okubukela. Kuxhomekeka kwiimfuno ezithile zesicelo ngasinye, kukho iindidi ezininzi ezahlukeneyo zeecodecs ezikhoyo ezifana:

• H264/AVC
• .265 / HEVC
• VC-1/WMV9
• MPEG4
• VP8/VP9

I-codec isebenza ngokucinezela igalelo lomlambo (okt, ividiyo okanye iaudio) kwiisayizi ezincinci zefayile ezinokulawulwa ngokufanelekileyo kuthungelwano okanye zigcinwe kwiidrive zendawo; oku kwaziwa ngokuba khowudi. Ngokwahlukileyo ekudlaleni kwakhona (umzekelo xa usasaza iividiyo kwi-intanethi), iifayile ezicinezelweyo kufuneka ziguqulwe zibuyele kwifomathi yazo yoqobo ephezulu ephunyezwa ukucacisa ulwazi olukhowudiweyo lwangaphambili; le nkqubo yaziwa ngokuba ukucacisa. Ngoncedo lwezixhobo ezifanelekileyo (ezifana namakhadi emizobo njl.njl.), ihardware incediswe ngekhowudi inokuphucula isantya sogcino lweekhowudi kakhulu ngelahleko encinci kumgangatho-obenza ukuba balungele usetyenziso oluphezulu umgangatho wefreyimu Iimfuno ezinje ngeenkonzo zokusasazwa kwexesha lokwenyani okanye imidlalo yamafu.

Iintlobo zeeCodecs

Codec zibubomi bomxholo wevidiyo - zimisela ukuba iividiyo zicinezelwa njani, zicuthwe kwaye zisasazwe njani. Zisenza sikwazi ukubukela iividiyo ezinobukhulu obahlukeneyo kunye nezigqibo kuzo nasiphi na isixhobo. Kukho iintlobo ezininzi zee-codecs ezikhoyo, nganye idlala indima eyahlukileyo kwinkqubo yokubukela umxholo wevidiyo.

Kweli nqaku, siza kujonga nzulu kwi uninzi lweentlobo eziqhelekileyo zeekhowudi:

IiCodecs ezilahlekileyo

I-codecs elahlekileyo yimigangatho yoxinzelelo enciphisa umgangatho wevidiyo yokuqala, ukuncama umgangatho womfanekiso kunye nedatha ngenxa yobukhulu befayile. Injongo kukwenza umjelo wevidiyo ube mncinane ngokwaneleyo ukuze ijongwe okanye ikhutshelwe ngokukhawuleza nangempumelelo. Xa kuthelekiswa nee-codecs ezilahlekileyo, ii-codecs ezilahlekileyo ngokuqhelekileyo zivelisa iifayile ezincinci kunye nedatha encinci, kodwa oku kuza kwiindleko ze-acuity kunye nokunyaniseka okupheleleyo.

Ezi ntlobo zimbini zixhaphakileyo ze-codecs ezilahlekileyo zi i-intraframe or I-bitrate eqhubekayo (CBR) kwaye i-interframe or ibitrate eguquguqukayo (VBR). Ikhowudi ye-Intraframe irekhoda yonke isakhelo somxholo njengeyunithi enye ngaphakathi kwefayile nganye ecinezelweyo; oku kubangela iifayile ezinkulu kodwa izinto zakudala ezimbalwa phakathi kwesakhelo ngasinye kunye nemifanekiso ekumgangatho ophezulu ngokubanzi. Ikhowudi ye-Interframe yohlulahlula izakhelo zomxholo kumacandelo ukuvumela amacandelo acinezelekileyo ngaphandle kotshintsho olubonakalayo phakathi kwezakhelo; iifayile ezinesiphumo zikholisa ukuba neesayizi ezincinci kunee-intraframes kodwa kunye nee-artifacts ezininzi phakathi kwezakhelo.

Imizekelo edumileyo yee-codecs ezilahlekileyo ibandakanya I-MPEG-4 AVC / H.264, MPEG-2 kwaye H.265 / HEVC, Windows Media Video 9 (WMV9), iRealVideo 9 (RV9), DivX, Xvid kwaye VP8/VP9. Ezi ziye zanda kakhulu kwizicelo zokusasaza ividiyo ezinje ngeYouTube ngenxa yokukwazi kwabo ukucinezela inani elikhulu ledatha ngokukhawuleza ngaphandle kokuncama okubalulekileyo kumgangatho wemifanekiso - iindwendwe zinokubukela iividiyo ezinde ezinoqhagamshelo olusezantsi lwebhanwidth ngelixa zigcina ukucaca okubonakalayo okubonakalayo.

IiCodecs ezingenakulahlekelwa

Iikhowudi zevidiyo luhlobo lwesoftware yekhompyuter esetyenziselwa ucinezelo lwedatha yevidiyo yedijithali, okanye ukufakwa kweekhowudi. Le nkqubo iyimfuneko xa usebenza ngeefayile ezinkulu zedijithali ukwenzela ukunciphisa ubungakanani befayile kunye nokwandisa ukuba ifayile ikhutshwe ngokukhawuleza kangakanani, idluliselwe okanye ihanjiswe. Iicodecs zahlulwe zaba ngamacandelo amabini ahlukeneyo: ukulahleka kwaye nelahleko iikhowudi

Ii-codecs eziLassless zinikeza i-replica yedijithali ngqo yefayile emva kokufakwa kweekhowudi ngokubonelela ngokuchaneka kwedatha epheleleyo, evumela ukuphindaphinda okuchanekileyo kwedijithali ngexesha lokunciphisa. Kuthatha indawo eninzi kune uxinzelelo olulahlekileyo kodwa kwakhona ayibandakanyi ugqweso lwayo kunye nokuvumela ngokulula ukuhlelwa kweaudio/komfanekiso ngaphandle kokuthomalalisa kumgangatho. Ii-codecs ezingenalahleko ziquka i-algorithms efana nale:

• I-LZW
• IJPEG LS
• FLAC
• I-ALAC
• MPEG-4 ALS

Hardware Codecs

Iikhowudi zehardware ziicodecs ezisebenzisa izixhobo zehardware ezizinikeleyo ukubethelela kunye nokucacisa imiqondiso yevidiyo. Ezinye iisistim zekhompyuter ezintsha, ezinjengeelaptops, zibandakanya iyunithi yekhowudi yevidiyo esekwe kwihardware enokusetyenziswa ukukhawulezisa inkqubo yokufakwa kweekhowudi. Ezi yunithi zisebenza kakuhle kwaye zinokubonelela ngeenzuzo ezibalulekileyo zokusebenza kwii-codecs ezisekwe kwisoftware. Ukongeza, ezinye ii-codecs ze-hardware ezizimeleyo zikhona ezibonelela ngeziphumo zomgangatho wobuchwephesha wokusasaza / ukusasaza usetyenziso.

Iintlobo ezimbini eziphambili zeekhowudi ze-hardware zezi Ucinezelo/Ufakelo lweekhowudi kwaye Ukucacisa iiCodecs:

• Ucinezelo/Ufakelo lweekhowudi: Ezi zixhobo zihlala ziza nesoftware yazo yobunikazi, nangona ezinye iinketho zinokufumaneka nazo. Basebenzisa izinto ezikhethekileyo ukwenza ubhalo lwevidiyo ngesantya esiphezulu kakhulu ngaphandle kokusebenzisa amandla amaninzi okanye CPU amandla ngokunxulumene nabafaki khowudi kwisoftware. Njengabafaki khowudi besoftware, bahlala bevelisa iintlobo ngeentlobo zeefomati zemveliso ezinje H.264 okanye MPEG-2/4 iifomati.
• Ukucacisa iiCodecs: Ekwaziwa njengamakhadi okuguqula ikhowudi okanye i-accelerators, ezi zixhobo zineetshiphusi ezinamandla ezinikezelweyo ezenzelwe ngokukodwa ukucacisa imiqondiso yevidiyo ecinezelweyo ngexesha lokwenyani ngaphandle kokutya izixhobo ezininzi zenkqubo (CPU amandla). Amakhadi anikezelweyo anikezelweyo aqhelekile kwiindawo zobuchwephesha apho inani elikhulu leevidiyo kufuneka lingaxinzelelwanga ngokukhawuleza kunye nefuthe elincinci ekusebenzeni kwenkqubo kunye nokuzinza.

IiCodecs ezidumileyo

Codec zibalulekile kuye nabani na osebenza ngemidiya yevidiyo. Zizithako zefayile yakho yevidiyo, izithako ezivumela umdlali wevidiyo ukuba ahlule phakathi kwevidiyo kunye nesandi, kunye neendlela zokucinezela idatha ukwenza kube lula ukuyigcina kunye nokuhamba. Kukho iindidi ngeendidi zee-codec ezikhoyo, kwaye eyona ifanelekileyo kwiprojekthi yakho kufuneka ikhethwe.

Kweli candelo, siza kuxoxa eyona codecs idumileyo:

H.264

H.264 (kwaziwa njenge MPEG-4 AVC) yenye yeekhowudi ezidumileyo zokufaka iifayile zevidiyo zedijithali zokusetyenziswa kwiinkqubo ezahlukeneyo - ukusuka kwiinkonzo zokusasaza ukuya kubadlali be-Blu-ray ukuya kwii-smartphones. Ukukwazi ukucinezela ividiyo ekumgangatho ophezulu kwiisayizi ezincinci zeefayile kuyenza ibe yenye yezona codecs zisetyenziswa kakhulu kunye neziguquguqukayo kwintengiso namhlanje.

I-H.264 isebenza ngokwaphula iifreyimu zedijithali zibe yi-8x8 yeebhloko zepixel kwaye emva koko uzicinezele ngoluhlu lwee-algorithms ezahlukeneyo. Ngenxa yokuba i-H.264 isebenza kakuhle, inokudala ividiyo yedijithali ekumgangatho ophezulu kakhulu nakwi-bitrate ephantsi kakhulu, iyenze ilungele uluhlu olubanzi lwezicelo ezivela kusasazo lwe-HDTV ukuya kubadlali bemidiya yabathengi kunye neenkonzo zokusasaza i-smartphone/ithebhulethi.

I-H.264 ibonelela ngenkxaso yokuskena okuqhubekayo (apho yonke imigca yomfanekiso iqala ukuskena zonke ngaxeshanye) kunye nevidiyo ye-scan edibeneyo, nangona i-codec ezininzi zanamhlanje zixhasa kuphela iskena sokuqhubela phambili ngenxa yokuba zisebenza ngokufanelekileyo ngokubhekiselele kwisayizi yefayile kunye nokusetyenziswa kwe-bandwidth. I-H.264 iyakwazi nokusingatha izisombululo ukuya kuthi ga 4K (4096×2160 ipixels), Ukuqinisekisa ukuba ihlala ifanelekile njengoko abaqulunqi bomxholo abaninzi besiya kwizisombululo ezinkulu ngokuhamba kwexesha.

Kanye kunye nokusebenza kwayo, enye yeenzuzo eziphambili ze-H.264 yinto yokuba yamkelwe ngabavelisi abaninzi besixhobo esele yenza kube lula kubasebenzisi ukuthumela umxholo phakathi kwezixhobo ngaphandle kokukhathazeka malunga nemiba ehambelanayo okanye i-software engahambelaniyo / ulungelelwaniso lwe-hardware. Ngesi sizathu, i-H.264 iyaqhubeka ukuhlala iyikhowudi ebalulekileyo kwiintlobo ngeentlobo zezixhobo kunye nezicelo namhlanje, ngaphandle kokhetho olutsha olukhoyo njenge. I-HEVC (ukusebenza ngokuNgcono kweKhowudi yeVidiyo).

H.265

H.265, kwaziwa njenge IKhowudi yevidiyo eFanelekileyo (HEVC), ngumgangatho woxinzelelo lwevidiyo obonelela ngekhowudi esebenza ngakumbi kuneyandulelayo, I-H.264/MPEG-4 AVC (Ukufakwa kweeKhowudi zeVidiyo eziPhezulu). Ixhasa isisombululo se-8K kwaye inokucinezela iifayile zevidiyo ukuya kuthi ga kabini ngokufanelekileyo njengomgangatho wangaphambili - kunye ukuya kuthi ga Iipesenti ezingama-40 ngaphezulu kokugcinwa komgangatho kunowandulelayo.

I-H.265 ngumlandeli wendalo we-H.264/MPEG-4 AVC, enika amandla amakhulu oxinzelelo kunye nobunzima obuncinci kunye nokudlala okulula kwizixhobo zokudlala ezifana nomabonakude, ii-smartphones, iilaptops kunye neetafile. Yifomathi yomthombo ovulekileyo ofanelekileyo kuzo zonke iintlobo zomxholo - ukusuka kwi-TV ukuya kwiividiyo ezisasaza kwi-intanethi kunye ne-Blu-ray discs - evumela abadali bomxholo ukuba banikeze umgangatho ophezulu wevidiyo ngelixa unciphisa iindleko ze-bandwidth.

Ukuguquguquka kwe-H.265 kwenza ukuba isetyenziswe kuluhlu olubanzi lwezicelo ezifana nezi:

• Usasazo lukamabonakude (kuquka 4K okanye 8K)
• Ukusasaza kunye neenkonzo zonxibelelwano kuquka ezo zesixhobo esiphathwayo kunye nesathelayithi
• Amava okwenyani wenyani
• Izicelo zokhathalelo lwempilo
• Ifomathi yomfanekiso omtsha we-HEIF - yenza kube lula ukuba imifanekiso ethathwe kwiikhamera ezimile zedijithali okanye iifowuni zekhamera zicinezeleke ngakumbi kunangaphambili ngaphandle kokulahleka kweenkcukacha zomfanekiso.

VP9

VP9 yikhowudi yevidiyo evulekileyo nengahlawulelwayo eyenziwe nguGoogle. Iphuhliselwe ukusetyenziswa kwii-apps zewebhu, inika itekhnoloji ye-state-of-the-art kunye noxinzelelo oluphuculweyo lokusasaza kunye nokukhuphela kwiibitrate ezisezantsi.

I-VP9 ikwabonisa iimpawu ezahlukeneyo eziluncedo kwizicelo zevidiyo:

• uluhlu oluphezulu oluguquguqukayo kunye nezithuba zemibala,
• indlela yokufaka iikhowudi engalahlekiyo,
• ustrimisho oluguquguqukayo kunye ne-encoder scalability.

Ixhasa iipikseli ezingezo-square, izikwere ezidityanisiweyo zemibala eyahlukileyo okanye amaxabiso okukhanya, iindlela zekhowudi zengqikelelo yexeshana (ezifana nembuyekezo yentshukumo) kunye neendlela ze-intra prediction coding (ezifana ne-discrete cosine transforms). I-VP9 ikwanakho ukuhlanganisa imifanekiso ukuya kuthi ga 8 amasuntswana ubunzulu bombala pixel nganye. Ifomathi inika amandla umgangatho womfanekiso ongcono ngeenkcukacha ezibonwayo ezinje ngamanqanaba engxolo ancitshisiweyo kunye nemiphetho ebukhali ngaphezulu kwezinye iikhowudi zangaphambili.

Xa ucofa umjelo weVP9, isixhobo somsebenzisi senza wonke umsebenzi ukusihlaziya kwakhona kwisakhelo esinye sevidiyo. Oku kuyenza ifikeleleke ngokukhawuleza kwaye ivumela ukudlala ngokukhawuleza kunezinye ii-codecs ngenxa yayo iimfuno zememori ephantsi. Oku kusebenza ngokukodwa xa abasebenzisi be-intanethi befikelela kwiindlela ezininzi ngexesha elinye kwimithombo emininzi; bangakwenza oko ngaphandle kokuba bonke oovimba babo beekhompyutha zidityaniswe ekucaciseni ikhowudi nganye ngokwahlukeneyo. Ukongeza, ukuhanjiswa kusetyenziswa ifomathi yefayile eqhelekileyo njenge MP4 inceda ukwenza ulungelelwaniso phakathi kwezixhobo okanye amaqonga anokuthi ngenye indlela angakwazi ukujonga umxholo ofakwe ngekhowudi kwezinye iifomati ezifana neWebM okanye iMKV.

IiCodecs kunye noMgangatho weVidiyo

Codec ziyinxalenye ebalulekileyo ye-encoding kunye ne-decoding yevidiyo, enokuchaphazela i umgangatho wevidiyo. IiCodecs zisetyenziselwa ukucinezela kunye nokunciphisa iifayile zevidiyo, kwaye uhlobo lwe-codec olukhethayo lunokuchaphazela ubungakanani kunye nomgangatho wevidiyo.

Kule nqaku, siza kuxubusha iintlobo ezahlukeneyo ze-codecs kunye zinokuchaphazela njani umgangatho wevidiyo:

I-Bitrate

I-Bitrate ngumlinganiselo wokuba lungakanani na ulwazi olufunwa yicodec ukumela ividiyo enikiweyo. Ilinganiswe ngamasuntswana ngomzuzwana, ibitrate inokuchaphazela zombini umgangatho wevidiyo kwaye ingakanani isayizi yefayile yayo.

Iphezulu i-bitrate, i iinkcukacha ezithe kratya zingabandakanywa kwinkqubo ye-encoding (okanye yocinezelo). kwaye ngaloo ndlela umgangatho womfanekiso ungcono oya kuwufumana. Nangona kunjalo, ikwathetha ukuba iifayile ezinkulu ziya kufuneka zigcinwe okanye zihanjiswe. Ukuba uthumela ividiyo yakho kulo naluphi na uhlobo lwenethiwekhi yedijithali (efana ne-intanethi), unokufumanisa ukuba i-bitrate ephezulu ibangela ukwanda okubonakalayo kwi-latency okanye ixesha lokubhafa.

Enye into echaphazela i-bitrate sisisombululo - njengoko izisombululo zisanda, kunjalo nobungakanani befayile - kodwa oku kuxhomekeke kwezinye iimpawu ezifana ii-codecs ezisetyenzisiweyo, ireyithi yesakhelo kunye nobukhulu besakhelo. Ngokubanzi, iibitrate ezisezantsi zikholisa ukunika iividiyo ezikumgangatho ophantsi nokuba ezinye izinto ezinje ngesisombululo ziphezulu.

IiCodecs zonke zinoluhlu lwazo olucetyisiweyo olufanelekileyo umfanekiso ogqwesileyo kunye nokusetyenziswa kwedatha encinci ke qiniseka ukuba ujonge kwiikhowudi ozikhethayo ngexesha lenkqubo yocinezelo.

Resolution

Isisombululo ngumlinganiselo wolwazi lwevidiyo ngokweepixels, kwaye yenye yezinto eziphambili ezimisela umgangatho wevidiyo. Kubalulekile ukuyiqonda loo nto izigqibo eziphezulu ziya kuhlala zivelisa iividiyo ezijonge ngcono kuba kukho iipekseli ezininzi ezixineneyo kwisakhelo ngasinye. Ezona zisombululo zixhaphakileyo ezisetyenziswa kukusasazwa kwe-intanethi zi 1920 × 1080 (HD epheleleyo) kwaye 1280 × 720 (HD).

Ividiyo enesisombululo esiphezulu ifuna amandla angaphezulu okuqhuba, anokubangela imiba yokuhambelana ukuba inkqubo yomsebenzisi ayiphucukanga. Iividiyo ezinesisombululo esiphezulu zikwathetha iifayile ezinkulu ezifuna i-codec engcono ukuze ikwazi ukudlala ngokufanelekileyo kuzo zonke izixhobo. Iikhowudi zeshishini eziqhelekileyo ezisetyenziselwa ukusasazwa kwe-intanethi zibandakanya I-H.264 okanye i-AVC, i-VP8, i-VP9 kunye ne-HLS okanye i-Apple HLS (i-HTTP Live Streaming).

Ngokuxhomekeke kwisicelo sakho kunye nohlobo lwesixhobo ocwangcisayo ekuhambiseni umxholo wakho kuya kugqiba ukuba yeyiphi icodec ekulungeleyo.

Ekugqibeleni, ukuba unolungiselelo olufanelekileyo lweekhowudi olubonisa i eyona codec ikhoyo ke kufuneka ungabinangxaki yokuzisa iividiyo ezikumgangatho ophezulu kuso nasiphi na isisombululo engayi kuchaphazeleka kwi-buffering okanye eminye imiba yokudlala ngelixa igcina inqanaba elilungileyo lokuthembeka okubonakalayo.

Umgangatho wefreyimu

Umgangatho wefreyimu yinto ephambili xa kuziwa kumgangatho wevidiyo kunye neecodecs. Ngumlinganiselo wokuba zingaphi iifreyimu ezifakiweyo ngesekhondi enye, ziqhele ukulinganiswa izakhelo ngesekhondi (FPS). Okukhona uphezulu ireyithi yesakhelo, kokukhona umfanekiso oshukumayo uya kuvela. Amazinga asezantsi esakhelo akhokelela kwividiyo ye-choppy, ngelixa izinga eliphezulu lesakhelo lisebenza ngakumbi ekuboneleleni ngomfanekiso olwelo.

Ngokomzekelo, xa urekhoda ngekhamera ye-8 FPS vs ikhamera ye-30 ye-FPS, ikhamera ye-8 FPS iya kuvelisa i-choppier footage ngenxa yenani eliphantsi lezakhelo ngesibini. Kwelinye icala, ikhamera ye-FPS engama-30 ivelisa i-footage egudileyo ene-blur eshukumayo ngakumbi phakathi kwayo kunekhamera ye-FPS eyi-8 kuba kuya kubakho iifreyimu ezithathiweyo ngokuphindwe kathathu.

Ngaphezulu koko, ii-codecs ezahlukeneyo zifuna ubuncinci okanye ubuninzi beereyithi zesakhelo ukuze ufumane iziphumo ezizezona. Ukuba isetyenziswe ngendlela engafanelekanga okanye ngaphandle kokwazi iimfuno zecodec yakho zokuhambelana nezinga lesakhelo, umgangatho wevidiyo yakho unokonakala. Iireyithi zezakhelo eziqhelekileyo eziqhelekileyo kwiifomathi zevidiyo zangoku kunye namava okubukela I-24 fps (iifilimu) kunye ne-30 fps (iinkqubo zeTV). Nangona kunjalo, ezinye ii-codecs zinokuxhasa eziphezulu ngokunjalo-ezinje 48 fps okanye nokuba 60 fps - ngelixa ubonelela ngokubonakalayo okuphezulu kunye nokuguda xa kuthelekiswa nabalingane babo abaphantsi.

isiphelo

Ukuqukumbela, ukuqonda ii-codecs yinxalenye ebalulekileyo yokudala nokubukela iividiyo kwizixhobo zethu zedijithali. Ukwazi iziseko zeaudio kunye nevidiyo codec, iinkcazelo zabo, kunye umahluko omkhulu phakathi kwabo kunokusinceda ukuba senze isigqibo esinolwazi olungcono xa sikhetha kwaye sijonge imidiya yedijithali. Ukongeza, ukuba nombono jikelele we eyona codecs idumileyo yevidiyo inokusinika ukuqonda ngakumbi malunga nokuba ii-codecs ezahlukeneyo zinokutshintsha njani inkangeleko kunye nesandi sevidiyo.

Okokugqibela, kuluncedo ukukhumbula oko ayizizo zonke iikhowudi zevidiyo ezihambelanayo—okuthetha ukuba iividiyo ezithile ezifuna icodec enye zisenokungadlali kakuhle kwesinye isixhobo ukuba aziluqondi olo hlobo. Ngethamsanqa, ngoku sinokhetho oluninzi kunangaphambili xa kufikwa ekujongeni umxholo wethu wedijithali esiwuthandayo-kubandakanya ukuhambelana okungcono kumaqonga amaninzi. Ke thatha ixesha lakho uphanda ifomathi eyiyo kuwe kwaye ufumanise ukuba yeyiphi esebenza ngcono kwiimfuno zakho!

Molo, ndinguKim, umama kunye nomthandi we-stop-motion onemvelaphi kwindalo yemidiya kunye nophuhliso lwewebhu. Ndinothando olukhulu lokuzoba kunye noopopayi, kwaye ngoku ndintywila kuqala kwihlabathi le-stop-motion. Ngebhlog yam, ndabelana nawe ngokufunda kwam.