3GP → MP4

He, ā, ko te huarahi tere. 3GP me MP4 e tiritiri ana i te hanganga kāwai ā-roto ōrite, kia tārua ai ngā aho whakaata me te oro oro puta noa i te paepae-ki-paepae, ā, ka tāruatia anō anake te whākōkī kāwai. Kāore he mea whakakōkī, ā, kāore he mea whakawhāiti anō, kia oti ai tētahi pūranga āhuatanga roa i raro i te minu i te wā o te wā kotahi, me te huaputa ā-whakahaere ki te pūtake. Ko te 3GP te taiwhanga i whakaritea e te 3GPP mō ngā pūrere pāpāho o mua, i te wā e tika ana kia ōrite te ataata ki tētahi mata 176x144 me tētahi mahere raraunga 2G. Ko MP4 te ISO/IEC 14496-14, i paerewa i te tau 2001, ā, i puta mai i te āhua o te kāwai pēnei i te QuickTime e whakamahia ana e MOV.

Heoi, ā, ko te tikanga ko te take katoa mō te tahuritanga. Ko tētahi 3GP 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. MP4 e whakawāteatia ana i roto i te huānga o te HTML5 māori me te kore tātai, me te kore taupānga o waho. Ko MP4 te ūnga whakawhiwhinga tino haumaru rawa - ko ia whatunga, kaitiaki, pāpāho, kaiwhakawhanake me te Smart TV i hangaia i roto i te tekau tau i muri mai e whakawhiwhia ana ki te kore pūmanawa tāpiri.

E whakawhirinaki ana ki te MP4 kōpaka. MP4 te tīpako ki H.264 mō te tautoko pānui whānui rawa puta noa i ngā pūkoro, ngā kiritaki, me ngā Smart TV. MKV te tīpako ki H.265 / HEVC mō te haurua o te rahi o te pūkete i te āhuatanga ōrite. WebM te tīpako ki VP9. Ka whakawātea ngā kōwhiringa hōhonu i te kōwhiringa pūoko mēnā e hiahiatia ana kia whakawāteatia.

Inā 3GP me MP4 e tiritiri ana i tētahi pūkōrero oro (hei tauira, e mau ana rāua i te AAC), ka whakawāteatia anō te oro me te kore whakawaenga - ōrite te iti. Ki te rerekē ngā pūkōrero, ka whakawaengatia te oro ki te AAC / Opus / Vorbis i runga anō i te mea e tautoko ana te MP4 kāwai. Ka tiakina te oro-maha (whakaaro, reo whirinoa).

Mā te pūmau, ā, — he 24fps 3GP e noho ana i te 24fps i roto i MP4; he 60fps 3GP e noho ana i te 60fps. Mēnā e hiahiatia ana e koe kia huri i te mokatere (hei tauira, i whakawāteatia te 29.97 → whakawhāiti 30, 60 rānei → 30 mō ngā tepe whakarewa), ka whakahaeretia e te kōwhiringa rārangi te 3:2 whakatata, te whakawāteatanga, me te whakakotahitanga rārangi i te whakawhitinga waehere ōrite.

He rite tonu te whakarerekētanga o te pūkōrero (3GP H.264 → MP4 H.264 e huri ana i te kāwai): tata tonu ki te rahi ōrite. Ka taea te huri i te huringa pūkōrero: H.264 → H.265 i te nuinga o te wā e whakawātea ana i te pūkete i te āhuatanga ā-whakaahua ōrite; He āhua ōrite tonu te VP9; AV1 e whakaiti ana i tētahi atu 20-30% engari he pōturi ake te waehere.

MP4 / H.264 e tākaro ana i te āhua o te āhua o ia pūrere hōu. E tākaro ana te MOV / H.264 i ngā pūrere Apple me te nuinga o ngā TV, engari kāore i te wā katoa i runga i te Android tawhito. E hiahiatia ana e MKV te VLC i runga i te iOS. Ko te WebM te kaiwhaiwāhi tuatahi. Kei roto i ngā kōwhiringa hōu he "whakapae pūrere" e kōwhiri ana i te pūrere/kōrero MP4 tino haumaru mō tō rātou whāinga. Ko MP4 anake e tautoko ana i tētahi hanga tuhituhi ā-whānui (mov_text), ā, kāore te oro-maha i te whakawhirinaki i waho o ngā kaiwhakaari papatahi.

He tata tonu te whakarerekētanga o te pūkōrero ōrite — 30 ki te 60 sekona mō tētahi pūkōrero 1-ora. Ka haere te pūkōrero katoa ki te 0.3-0.7x te roanga pūtake i runga i tātau pūkōrero GPU, nō reira ka oti te 1-ora 3GP → MP4 i roto i te 18-40 minu e ai ki te rongoā me te pūkōrero ūnga.

Tae atu ki te 8K (7680×4320) i runga i ngā mahere Premium. Ko ngā tahuritanga wātea e whakawhāititia ana ki te 4K (3840×2160) e te tepe o te rahi o te pūkete. Ko te metadata HDR (HDR10, HDR10+, Dolby Vision ina noho) e mau ana i te wāhi e tautoko ana e ngā kāwai 3GP me MP4.

He. Ka tuwhera ngā faila ataata i whakarewaina ki roto i ngā kaimahi motuhake, kāore anō kia kitea e te tangata, kāore anō kia whakarārangitia, ā, ka whakakoretia i roto i ngā minu o te oti. Ka tuhituhitia te matapihi o te tiakitanga ki /privacy/ ā, kāore e whakaputaina e tātau he whakaakoranga o te whakataki i te kaiwhakaari.

Kāore i te ōrite te hipanga - ka whakamahia te /video-trim/, /video-cutter/ rānei hei whakaiti i te tuatahi, kātahi ka haere te tahuritanga 3GP → MP4. He tere ake te whakaiti me te tahuri i te whakakōrero anō i te katoa o te 3GP kia kore ai e whakaiti i te pūwhitinga kāore i te whakamahia.