HDR Video Formats a Wɔakyerɛkyerɛ Mu
Akwankyerɛ a ɛkɔ akyiri a ɛbɛboa wo ma woate hdr video formats ase a wɔakyerɛkyerɛ mu.
Dɛn ne HDR Video ne Nea Enti a Ɛho Hia
High Dynamic Range (HDR) video gyina hɔ ma nsakrae kɛse a ɛkɔ anim wɔ ɔyɛkyerɛ mfiridwuma mu, na ɛde aniwa a ɛkɔ anim kɛse ma bere a wɔde toto dynamic range (SDR) mu nsɛm a wɔahyɛ da ayɛ ho no. HDR kyere na ɛda hann dodow a ɛtrɛw kɛse adi, efi abibifo a emu dɔ sen biara so kosi fitaa a ɛhyerɛn sen biara so, na ɛma mfonini ahorow a ɛte sɛ nea onipa aniwa hu fi awosu mu no kɛse. Saa hann a wɔatrɛw mu yi, a mpɛn pii no efi 0.1 kosi 1,000 nits anaa nea ɛboro saa no ma wotumi de kanea a ɛyɛ nokware kɛse ne nsɛm a ɛkɔ akyiri kɛse wɔ sunsuma ne nsɛntitiriw nyinaa mu. Nkɛntɛnso a HDR nya no trɛw kɔ akyiri sen hann dodow kɛkɛ. HDR video nso boa kɔla ahorow a ɛtrɛw, a ɛkyerɛ sɛ ebetumi ada kɔla pii adi sen video ahorow a wɔde di dwuma wɔ amanne kwan so no. Bere a video a wɔde di dwuma daa taa kata kɔla ahorow a wotumi hu no bɛyɛ 35% so no, HDR nhyehyɛe ahorow no tumi san yɛ kɔla ahorow a nnipa aniwa tumi hu no bɛyɛ 75%. Saa kɔla ahunmu a wɔatrɛw mu yi, a wɔde bit mu dɔ a ɛkɔ soro (mpɛn pii no 10-bit mmom sen 8-bit) ka ho no, yi kɔla a wɔde hyɛ mu no fi hɔ na ɛma kɔla a ɛkɔ soro no yɛ mmerɛw. Nea afi mu aba ne video mu nsɛm a ɛte sɛ nea ɛyɛ hyew, ɛyɛ nokware, na ɛma obi de ne ho hyɛ mu, na ɛma HDR som bo titiriw ma sini mu nsɛm, agodie, ne video a wɔyɛ a ɛyɛ adwumayɛfo de.
HDR10: Fapem Gyinapɛn
HDR10 gyina hɔ sɛ HDR nhyehyɛe a wɔagye atom kɛse, ɛsom sɛ mfitiase gyinapɛn ma HDR video wɔ adwumayɛkuw no nyinaa mu. Wɔyɛɛ no sɛ gyinapɛn a wɔabue, HDR10 de static metadata di dwuma de kyerɛkyerɛ kɔla ahunmu ne hann su ahorow mu ma video mũ no nyinaa. Ɛboa Rec. 2020 kɔla ahunmu, 10-bit kɔla bun, ne peak brightness levels kɔ 10,000 nits, ɛwom sɛ dodow no ara consumer displays taa kɔ soro wɔ 1,000-4,000 nits. Format no de Perceptual Quantizer (PQ) transfer function, a wɔsan frɛ no SMPTE ST 2084, a ɛkyerɛ HDR hann nyinaa ho mfonini yiye sen atetesɛm gamma curves. Amansan nyinaa a ɛne HDR10 hyia no ma ɛyɛ de facto gyinapɛn ma HDR nsɛm a wɔkyekyɛ. streaming platforms akɛseɛ te sɛ Netflix, Amazon Prime Video, ne Disney+ de HDR10 di dwuma ma wɔn HDR nsɛm, na ɛkame ayɛ sɛ displays a ɛtumi HDR nyinaa boa saa format yi. Nanso, HDR10 ahotoso a ɛwɔ static metadata so no kyerɛ sɛ wɔde HDR parameters no si hɔ pɛnkoro ma video no nyinaa, na ebetumi asiw optimization ano ama scenes a ɛsono hann ahwehwɛde. Ɛmfa ho saa anohyeto yi no, HDR10 ma nkɔso kɛse ba wɔ SDR mu nsɛm so na ɛyɛ ɔkwan a eye kyɛn so a wɔfa so hyɛn HDR hwɛ osuahu ahorow mu.
HDR10+ ne Dolby Anisoadehu: HDR a ɛkɔ akyiri a ɛyɛ nnam
HDR10+ ne Dolby Vision gyina hɔ ma nkɔsoɔ a ɛdi hɔ wɔ HDR mfiridwuma mu, wɔn mmienu nyinaa de metadata a ɛyɛ nnam di dwuma de yɛ HDR parameters yie wɔ scene-by-scene anaa mpo frame-by-frame nnyinasoɔ. HDR10+, a Samsung ne Amazon ne nnwuma akannifoɔ foforɔ ayɛ adwuma abom no, si HDR10 fapem no so berɛ a ɛde dynamic tone mapping tumi ka ho. Eyi ma wɔn a wɔyɛ nneɛma a ɛwɔ mu no tumi siesie HDR osuahu no yiye wɔ video no nyinaa mu, na ɛma ɛhyerɛn na kɔla ahorow a eye sen biara ma adeyɛ biara. HDR10+ kura akyi a ɛne HDR10 nkyerɛkyerɛmu hyia bere a ɛde osuahu a ɛkɔ anim ma wɔ mfiri a ɛne no hyia so. Dolby Vision a Dolby Laboratories na ɛyɛeɛ no de HDR dwumadie a ɛyɛ nwonwa paa a ɛwɔ hɔ mprempren ma. Ɛboa kɔla mu dɔ a ɛkɔ 12-bit ne nsusuwii mu hann a ɛsen biara a ɛyɛ nits 10,000, Dolby Vision ma kɔla a ɛyɛ pɛpɛɛpɛ a ɛkorɔn ne nea ɛyɛ nnam. Format no ka metadata a ɛkɔ akyiri a ɛkyerɛ content mastering ne display rendering nyinaa kwan, hwɛ hu sɛ wɔakora ɔbɔadeɛ no adwini adwene so wɔ mmeae ahorow a wɔhwɛ. Dolby Vision content yɛ professionally mastered wɔ specialized facilities, ɛde premium visual quality a ɛda nsow titiriw wɔ high-end ofie sinidan ne sini applications.
HLG: HDR Ano aduru a Wɔasiesie ama Broadcast
Hybrid Log-Gamma (HLG) gyina hɔ ma ɔkwan soronko a wɔfa so yɛ HDR a wɔayɛ no titiriw ama television a wɔde bɔ amanneɛ ne dwumadi ahorow a wɔde di dwuma tee. BBC ne NHK (Japan ɔman no mu asɛnka adwumakuo) na wɔabom ayɛ no, HLG di nsɛnnennen a mfasoɔ wɔ so a ɛwɔ HDR nsɛm a wɔbɛkyekyɛ wɔ atetesɛm amanneɛbɔ nhyehyɛeɛ so no ho dwuma. Nea ɛnte sɛ HDR format afoforo a ɛhwehwɛ metadata pɔtee bi no, HLG de hybrid transfer function a ɛne SDR displays hyia akyi bere a ɛde HDR mfaso ma wɔ screens a ɛne no hyia so. Saa ano aduru fɛfɛ yi ma wɔn a wɔbɔ amanneɛ no tumi de nsɛnkyerɛnne biako a ɛyɛ adwuma wɔ HDR ne SDR mfiri nyinaa so mena. HLG nhyehyɛe a ɛfa broadcast-centric ho no ma ɛyɛ nea eye ma agumadi a ɛte ase, nsɛm ho amanneɛbɔ, ne bere ankasa mu nsɛm afoforo a ɛwɔ mastering nhyehyɛe a ɛyɛ den a wɔhwehwɛ ma HDR10 + anaa Dolby Vision no nyɛ nea mfaso wɔ so. HLG boa Rec. 2020 kɔla atenaeɛ ne 10-bit encoding, a ɛma nkɔsoɔ kɛseɛ wɔ SDR so berɛ a ɛkura mmerɛw a ɛhia ma broadcast adwumayɛ. Broadcasters akɛse a ɛwɔ wiase nyinaa agye HLG atom ama HDR transmissions, na format no yɛ nea streaming platforms ma live content boa kɛse. Format no tumi a ɛtumi yɛ adwuma a ɛnne map a ɛyɛ den nka ho no ma ɛsom bo titire ma content producers a wohia HDR delivery a wotumi de ho to so wɔ viewing environments ahodoɔ mu.
Mfiridwuma Ho Nsɛm a Wɔakyerɛkyerɛ Mu ne Nea Ɛfata
Mfiridwuma ho nkyerɛkyerɛmu a ɛfa HDR nhyehyɛe ahorow ho ntease ho hia kɛse ma wɔn a wɔyɛ nneɛma, wɔn a wɔkyekyɛ, ne wɔn a wɔde di dwuma a wɔresisi nnwinnade ho gyinae. HDR10 de 10-bit kɔla bun di dwuma ne Rec. 2020 kɔla ahunmu ne PQ (SMPTE ST 2084) transfer adwuma, boa peak hann a ɛkɔ 10,000 nits ne static metadata. HDR10 + hwɛ saa nkyerɛkyerɛmu koro yi ara so bere a ɛde metadata tumi a ɛyɛ nnam ka ho denam SMPTE ST 2094-40 gyinapɛn so. Dolby Vision de nkyerɛkyerɛmu a ɛkorɔn sen biara a ɛkɔ 12-bit kɔla bun ma, ɛwom sɛ adetɔfoɔ dwumadie dodoɔ no ara de 10-bit di dwuma, na ɛboa PQ ne HLG transfer dwumadie nyinaa a egyina profile a wɔde di dwuma no so. Nsusuiɛ a ɛfa nhyiamu ho di dwuma titire wɔ format a wɔpaw ne ne di mu. HDR10 nya amansan mmoa wɔ mfiri a ɛtumi HDR tumi so, na ɛma ɛyɛ paw a ahotɔ wɔ mu ma nkitahodiɛ a ɛtrɛ. HDR10+ mmoa anya nkɔanim kɛse, a TV ayɛfo atitiriw ne streaming services agye ɔkwan no atom, ɛwom sɛ ɛnyɛ baabiara te sɛ HDR10 de. Dolby Vision hwehwɛ tumi krataa ne hardware mmoa pɔtee bi, a ɛto nea ɛwɔ hɔ no ano hye wɔ mfiri a ɛyɛ fɛ so, nanso ɛde nea eye sen biara ma bere a wɔde adi dwuma yiye no. HLG mmoa no gu ahorow wɔ ɔmantam ne dwumadie biara mu, na wɔgye tom denneennen wɔ broadcast gua so sɛ wɔde toto streaming ne physical media application ho a.
HDR Format a Ɛfata a Wobɛpaw Ma W’ahiade
HDR nhyehyɛe a ɛfata a wobɛpaw no gyina nneɛma pii so a nea ɛka ho ne emu nsɛm no su, ɔkwan a wɔfa so kyekyɛ, nnipa a wɔde wɔn ani asi wɔn so, ne mfiridwuma mu ahwehwɛde ahorow. Sɛnea ɛbɛyɛ a wɔbɛkyekyɛ nneɛma nyinaa ne nea ɛne ne ho hyia kɛse no, HDR10 da so ara yɛ nea mfaso wɔ so sen biara a wɔpaw esiane ne amansan mmoa ne ahotoso a wɔada no adi nti. Ɛsɛ sɛ wɔn a wɔyɛ nsɛm a ɛwɔ mu a wɔde wɔn ani asi osuahu a ɛyɛ fɛ so no susuw HDR10+ ho ma ne metadata tumi a ɛyɛ nnam bere a wɔkura nhyiam a ɛtrɛw mu, anaa Dolby Vision ma dwumadie a ɛkorɔn sen biara a atiefoɔ a wɔde wɔn ani asi so no wɔ nnwinnadeɛ a ɛkorɔn a ɛne no hyia. Adwuma a wɔyɛ ne akwan a wɔfa so kyekyɛ no nya format a wɔpaw no so nkɛntɛnso kɛse. Streaming services taa boa HDR format ahorow pii, na ɛma wotumi de nsɛm no kɔ wɔ format a eye sen biara a ɛwɔ hɔ ma mfiri biara mu. Broadcast applications taa pɛ HLG esiane ne compatability mfaso ne adwumayɛ nhyehyɛe a ɛyɛ mmerɛw ahwehwɛde ahorow nti. Wɔn a wɔyɛ honam fam nsɛm ho amanneɛbɔfo betumi apaw HDR10 ama nhyiam a ɛtrɛw anaa Dolby Vision ama nneɛma a wɔayi no adi a ɛyɛ fɛ a wɔde wɔn ani asi atiefo a wɔn ani gye ho so. Sɛ wode HDR video fael reyɛ adwuma a, nsakraeɛ nnwinnadeɛ a wotumi de ho to so a wobɛnya no bɛyɛ adeɛ a ɛho hia na ama nsɛm a ɛwɔ mu no sesa wɔ format ahodoɔ ntam na woahwɛ sɛ ɛne platform ne mfiri ahodoɔ hyia.
Nneɛma Titiriw a Wɔde Fa Kɔ
HDR Formats Di Atirimpɔw Ahorow Ho Dwuma
HDR format biara di nsɛm pɔtee a wɔde di dwuma ne mfiridwuma mu ahwehwɛde ahorow ho dwuma
- HDR10 ma amansan nyinaa nhyiamu ma nkyekyɛmu a ɛtrɛ
- HDR10 + ne Dolby Vision ma ahoɔden optimization ma premium osuahu ahorow
- HLG di mu wɔ broadcast ne live streaming applications mu
Mfiridwuma ho Nkyerɛkyerɛmu Nkɛntɛnso Pa
Sɛ wote format specifications ase a, ɛboa ma content delivery ne viewing experience yɛ papa
- 10-bit kɔla bun yi banding fi hɔ na ɛma gradients tu mpɔn
- Dynamic metadata ma wotumi yɛ scene-by-scene optimization
- Kɔla ahunmu ne hann a ɛsen biara na ɛkyerɛ nkɛntɛnso a ɛwɔ aniwa so nyinaa
Nhyiam a ɛne ne ho di nsɛ na Ɛkanyan Adoption
Format nkonimdi gyina mfiri mmoa ne nnwuma a wogye tom so kɛse
- HDR10 ma mfiri a ɛtrɛw sen biara a ɛne ne ho hyia
- Premium formats hwehwɛ hardware mmoa pɔtee bi
- Broadcast formats de adwumayɛ nhyehyɛe a ɛnyɛ den di kan sen sɛnea ɛyɛ papa sen biara
Nsɛm a Wɔtaa Bisa
Nsonsonoe bɛn na ɛwɔ static ne dynamic metadata ntam wɔ HDR mu?
Static metadata (a wɔde di dwuma wɔ HDR10 mu) de HDR parameters koro no ara di dwuma wɔ video mũ no nyinaa mu, bere a dynamic metadata (a wɔde di dwuma wɔ HDR10+ ne Dolby Vision mu) ma kwan ma wɔyɛ no yiye wɔ scene-by-scene anaa frame-by-frame nnyinaso so, na ɛma nsakrae pa ma nsɛm a ɛwɔ mu hyerɛn ne kɔla a wɔhwehwɛ.
So metumi ahwɛ HDR10+ nsɛm wɔ HDR10-only display so?
Yiw, HDR10 + yɛ akyi a ɛne HDR10 nkyerɛkyerɛmu ahorow hyia. Wɔbɛbu ani agu dynamic metadata no so, na emu nsɛm no bɛbɔ denam base HDR10 parameters no so, ɛda so ara de HDR osuahu ma ɛwom sɛ enni dynamic optimization a wɔahyɛ no den no.
Dɛn nti na streaming services binom de HDR format ahorow pii ma?
Streaming services ma HDR format ahorow pii de hwɛ hu sɛ wobɛhwɛ osuahu a eye sen biara wɔ mfiri ahorow so. Wei ma wotumi de Dolby Vision kɔ mfiri a ɛyɛ fɛ so bere a wɔsan hwe ase kɔ HDR10+ anaa HDR10 so ma ɛne ne ho hyia kɛse, na ɛma wɔn atiefo du hɔ kɛse.
So Dolby Vision ye sen HDR10+ bere nyinaa?
Dolby Vision taa de mfiridwuma ho nkyerɛkyerɛmu a ɛkorɔn ne dwumadie a ɛyɛ nwonwa kɛseɛ ma, nanso nsonsonoeɛ ankasa a ɛwɔ hwɛ mu no gyina tumi a wɔde kyerɛ, emu nsɛm a wɔde di dwuma yie, ne tebea a wɔhwɛ so. Format abien no nyinaa ma HDR osuahu ahorow a eye kyɛn so bere a wɔde di dwuma yiye no.
So mihia software titiriw bi a mede bɛyɛ adwuma wɔ HDR video fael ahorow mu?
Sɛ wode HDR video bɛyɛ adwuma a, ɛhwehwɛ sɛ wode softwea a ɛboa HDR formats ne kɔla ahorow a wɔde di dwuma yiye. Video editing software a ɛyɛ adwumaden, media players a ɛwɔ HDR mmoa, ne nsakraeɛ nnwinnadeɛ titire ho hia na ama wɔakura HDR su mu wɔ adwumayɛ ne nkyekyɛmu adwumayɛ nyinaa mu.
Fael kɛseɛ ahe na ɛsɛ sɛ mehwɛ kwan wɔ HDR video ho?
HDR video taa ma fael akɛseɛ kɔ soro 25-40% sɛ wɔde toto SDR nsɛm a ɛyɛ pɛ ho a ɛnam 10-bit encoding, kɔla ahodoɔ a wɔatrɛw mu, ne metadata overhead nti. Nkɔanim pɔtee no gyina HDR nhyehyɛe pɔtee, nhyɛso nhyehyɛe, ne emu nsɛm su so.
So wobetumi adan HDR mu nsɛm no akɔ format ahorow mu?
Yiw, wobetumi adan HDR mu nsɛm no wɔ format ahorow ntam, ɛwom sɛ saa adeyɛ yi hwehwɛ sɛ wɔde ahwɛyiye di kɔla ahorow, ɛnne mfonini, ne metadata ho dwuma na ama wɔakɔ so ayɛ nea ɛyɛ papa de. Nsakyeraeɛ binom betumi ama wɔahwere su pa, titire berɛ a woresakyera afiri nkyerɛwdeɛ a ɛkorɔn te sɛ Dolby Vision akɔ HDR10.
Dɛn na ɛba bere a wɔbɔ HDR nsɛm wɔ display ahorow a ɛnyɛ HDR so no?
Sɛ wɔbɔ HDR nsɛm wɔ SDR displays so a, tone mapping ba de mia extended dynamic range no mu kɔ display no tumi mu. Saa adeyɛ yi gu ahorow wɔ ne su mu a egyina player software no so na ebetumi ama mfonini ahorow ayɛ te sɛ nea ɛyɛ sum dodo anaasɛ wɔahohoro a enni ɛnne ho mfonini a ɛfata.
Fa Wo Nimdeɛ Di Dwuma
Seesei a woate nsusuwii ahorow no ase no, bɔ mmɔden sɛ Convertify de nea woasua no di dwuma. Nsakrae a wontua hwee, a anohyeto nni mu a akontaabu biara ho nhia.