AVI → WebM

Ka taea e ia te mahi engari rawa kāore i te whakawātea, ā, ko ngā ihirangi AVI he tino whakawātea nā te mea ka tae mai te āhua i te wā o te whakawāteatanga me te DVD. Ka rokiroki ngā tātuhi whakawātea i ngā āpure haurua-whakapaetata e rua i whakawāteatia i te rima tekau o te tuarua; i runga i tētahi tātari pūwhitiwhiti, mātakitaki rānei e ako ana hei whakawhāiti whakawhāiti i tētahi mea e neke ana. Ka whakahohe te kōwhiringa whakawhāiti, ā, ka whakawhāiti te kaituhituhi i ngā āpure ki ngā tātai whakawhāiti katoa i mua i te tuhi i te WebM. Ko AVI te Interleave Audio Video a Microsoft, i whakamōhiotia i te tau kotahi mano e 1992 i runga i te āhua o te pūnaha pūtautau RIFF — tētahi o ngā kāwai tawhito rawa e haere tonu ana.

Kāore, ā, ko taua tētahi o ngā take pai ake hei neke. He tauine pūtahi-pūtahi te AVI kōwae e haere tika ana ki ngā pūkete roa, ki ngā pūkete bitrate-high rānei, ko te take i tae ai ngā tāurunga tahito hei wāhanga1, wāhanga2, wāhanga3. WebM kāore he tepe ōrite, nō reira ka taea te whakakotahi anō i ngā wāhanga ki tētahi pūkete tūturu. Kāore he tautoko ā-motu mō ngā pūkōrero hōu, te mokatere rārangi tāupe, ngā whakarārangi māmā, ngā pūkete rānei e nui ake i te 4 GB me te kore tāhae, ā, ko tōna pūkōrero-pōrotanga e whakawātea ana i te pūkete.

Kāore i te āhua tika. AVI e rokiroki ana i ngā aho maha hei whakataki ā-ira tuatahi, engari he āhua kore tonu te WebM tautoko whakataki i muri i te whakataki tuatahi, nā reira ko te nuinga o ngā kaiwhakaari ka whakaaturia anake tētahi. Ka kōwhiria te whakataki e hiahiatia ana e koe i mua i te tahuri; He pai ake te whakawātea i ētahi atu ki o rātau ake pūkete i te waiho i roto i tētahi kāwai e whakawātea ana i a rātau. He ngāwari rawa te AVI, ko te take i puta ai ngā kāmera tahito, ngā kāri whakataki, ngā utauta tāruatanga DVD me ngā pūmanawa Windows-era katoa i te wā o te wā. He kino te WebM i tētahi wāhi i waho o te kaiwhaiwāhi — ko ngā kaiwhakawhanake ataata, ngā whare karakia taketake o ngā tāuru me ngā Smart TV e tino whakakāhore ana i a ia.

Heoi, ā, ko te tikanga ko te take katoa mō te tahuritanga. Ko tētahi AVI i whakawāteatia i roto i tētahi pātaka whatunga, e whakaatu ana i tētahi kaiwhakaari whakarewa, he whakahau rānei i tētahi whakataki, nā te mea kāore he whakawātea mō te whakawāteatanga. WebM e whakawāteatia ana i roto i te huānga o te HTML5 māori me te kore tātai, me te kore taupānga o waho. Ka tākaro ā-iwi te WebM i ia kaitiaki o nāianei me te kore tāpiri, kāore he utu ātete, ā, kāore he whakaaturanga ā-patenta, e noho ana hei tīpāho mō te ataata whakawaitara-wārangi.

Mō ētahi mea e hiahia ana koe ki te pupuri, ā, kei te AVI tētahi whakatupuranga o mua o ngā utauta ataata, ā, ko te pūmanawa e ako ana i a ia e ngaro tonu ana i ngā pūrongo, ngā kiritaki me ngā pūnaha whakahaere. Ko te neke i te pūwhitinga ki WebM ināianei, ahakoa kei te tīariari tonu tētahi whakakōrero mārō, ko te rerekētanga i waenganui i tētahi pūranga ka taea e koe te whakatupuranga tekau tau me tētahi kāore e taea e koe.

He — ko ia whakataki oro i roto i te AVI (whakaaro a te kaiwhakahaere, reo whirinoa, oro whakaahua) ka tiakina ki te WebM ina tautokona e te pūrere te oro-maha. MKV me MOV e whakahaere ana i ngā whakataki oro kāore i te whakawātea; he maha ngā MP4 e tautoko ana, engari ko ētahi kaiwhakaari pūrere e kite ana i te whakataki 1 anake; Ka whakawāteatia te WebM i te whakataki Opus / Vorbis kotahi. Ko te WebM he huinga iti o Matroska i whakaputaina e Google i te tau 2010 hei whakarato i te pouaka whakaata HTML5 me te kore utu.

Ka ora ngā whakahuatuhi māmā (ngā rererangi ka tīpakohia) ina taea e WebM te mau i a rātou: MKV kei roto i te SRT, ASS, SSA, PGS, VobSub māori; MP4 kei roto anake i te mov_text (he hanga whakawātea). Ko te tahuritanga o tētahi MKV me ngā whakahuatuhi āhua ASS ki MP4 ka whakaiti i a rātou ki te mov_text, ka whakarewa rānei i a rātou. Ko ngā whakahuatuhi matatini (i whakarewatia ki roto i te ataata) ka mau i a rātou ahakoa pēhea.

Ka whakawhitia ngā raraunga meta i waenganui i te AVI me te WebM ina tautokona e ngā kāwai e rua tētahi ngota wāhanga (MKV, MP4, MOV). Ka penapena te WebM i ngā wāhanga i roto i tētahi kōpaka Matroska-hōpū, kia mārama ai ngā wāhanga MKV <-> WebM. Kāore he whakapūtā wāhanga a AVI, nā reira ka tahuri te tahuri AVI ki te WebM i tētahi pūranga kāore i te whakarārangi, engari rawa ka tāpiri i ngā tohu ā-ringa.

Ko MKV te mea anake e pupuri ana i ngā pūkete whakapiripiri (ngā tātuhi TTF mō ngā tātai ASS, ngā toi kāwai JPG, ngā tāurunga PDF i whakamāoritia). E haere ana mai i te AVI ki te WebM ka whakapeka ēnei tātai ina kore te WebM he MKV — ka tahuri ngā rerenga taketake, engari ka noho te utu whakapiripiri i te pūtake. Whakataki AVI hei tiaki i ētahi atu tātai mēnā e whakawhirinaki ana ki ngā tātai whakapiripiri.

E kōwhiritia ana te pūnaha waeheretanga pūnoa hei ōrite ki te WebM kaitakawaenga: MKV ngā pūnoa ki H.265 (HEVC) mō te whakawhāititanga pai ake; MP4 ngā pūnoa ki H.264 mō te tautoko pūrere whānui rawa; WebM ngā pūnoa ki VP9; AVI e whakamahi ana i te MPEG-4 ASP (DivX/Xvid lineage). Ka whakawātea mā te whakawātea codec hōhonu — Kei te wātea te AV1 mō MKV / WebM i reira e hiahiatia ana e koe te whakawhāititanga nui rawa, ā, ka taea te tūmanako mā te waehere.

Ko te metadata HDR takoto (HDR10 nga uara whakaaturanga matua, te taumata mārama ihirangi) e mau ana ki te WebM ina tautokona e ngā kāwai me te pūāhua kōaro i kōwhiria (HEVC, AV1 i MKV / MP4). He nui ake te pōturi o Dolby Vision — ko te tātai DV 5 / 7 / 8.1 i te AVI e ora noa ana ki te MKV me HEVC; te tahuri ki tētahi WebM kāwai kāore e mau ana i te apa DV ki te HDR10.