M4V → JPG

Tahurihia Tō M4V Tuhinga o mua JPG kōnae ngawari

Tīpakohia ō kōnae

Ka tangohia rānei ā-rānei ōna doke ki konei

Whakahaua: 1 Ka whakawhitinga/ora · Kāore i te whakawhāiti →

Tahurihia kia 1 GB ngā kōnae mō te kore utu, ka taea e ngā kaiwhakamahi Pro te tahuri ki te 100 GB ngā kōnae; Waitohu inaianei

Tukuatu ana

Me pēhea te huri M4V Tuhinga o mua JPG

Hipanga 1: Tukuatu tō M4V ngā kōnae mā te whakamahi i te pātene i runga ake nei, mā te tōia me te whakataka rānei.

Hipanga 2: Pāwhiritia te pātene 'Tahuri' hei tīmata i te tahuritanga.

Hipanga 3: Tikiake i tō mea kua tahurihia JPG kōnae

M4V Tuhinga o mua JPG Ngā Pātai Auau mō te Tahuritanga

He pēhea te tango i ngā whārangi takitahi mai i te M4V hei JPG whakaahua?

Whakataki i te M4V me te whakarerekētanga e whakaatu ana i tētahi kōwhiringa rārangi-whakahaere: ia rārangi Nth, ngā rārangi i ngā wā tauwhāiti, tētahi rārangi rānei i ia wa. Ka whakawāteatia ia rārangi i te rererangi vitio M4V, ka whakawaeheretia hei JPG tārua, ā, ka whakatōpūtia hei ZIP hei whakataki. Ko te M4V he tāupe Apple o MP4, e whakamahia ana e iTunes me te Apple TV app mō ngā whitiāhua me ngā wāhanga TV. Ko JPG te paerewa JPEG mai i te tau kotahi mano e 1992, ā, i muri i ngā tekau tau e toru ko te āhua tonu o te nuinga o ngā kāmera me te nuinga o ngā whatunga e whakamahia ana mō ngā whakaahua.

Ka puta ake te whakataki i roto i ngā tātai JPG ka tāruatia?

Kāore mēnā he whakataki whakahuatuhi tūturu rātou. Ka pupuri te M4V i ngā whakahuatuhi hei a rātau ake rerenga, ā, ka tātuhia e te kaiwhakaari i runga i te whakaahua i te wā whakataetae, nō reira ko te tātai whakakōrero e tuhi ana i waho hei JPG he pikorata mārō i raro i te JPG. Ko ngā whakahuatuhi i whakamārōtia ki roto i te ataata i mua i te nohotanga o M4V he mea rerekē — i taua wā he wāhanga o te whakaahua, ā, ka pupuri i ia tātai whakawātea.

Ka taea e au te tango i tētahi JPG mai i ia wāhanga o te M4V?

Kāore i te pēhi te kī kotahi, engari ko te M4V e whakamāramatia ana: ka rokirokitia ngā tohu wā i roto i te kāwai hei tātaitai wā, nā reira ka whakaako te rārangi wā i te pūranga, ā, ka tāpiri i ēnei wā ki te āpure tātaitai wā. Ka whiwhi koe i tētahi JPG i ia wā, i te raupapa, ko te tikanga noa iho o te hanganga o ngā tātuhi mō tētahi pūkete roa. Ka waiho e ngā pūtake kāore i te tohu wā te kōwhiringa o ngā tirohanga mā te kanohi. E pupuri ana a M4V i ngā tohu wāhanga, i ngā mahi toi me ngā whakataki whakahuatuhi i roto i te āhua e tūmanako ana te Apple TV ki te taupānga, e ngaro ana i te nuinga o te wā te MP4 noa iho.

He aha te whakaritenga āhuahua me whakamahia e au mō te huaputa JPG?

Ko te āhuatanga 85 te pūmau tōtika, ā, ko te mea e whakamahia ana engari rawa ka huri i a koe — kāore e taea te whakawātea i te pūtake i te tawhiti tirohia noa iho, tata ki te rima o te rahi o tētahi ōritetanga kore ngaro. Whakahau ki te 95 mō tētahi mea e whakakētia ana, ka tātuhia rānei, ā, ka whakapeka ki te 70 mō ngā tātuhi iti i te wāhi e whakahaeretia ana te rahi. He ngaro te JPG: ka hurihia te whakaahua ki tētahi DCT, he nui, he waehere entropi, me te kāwae āhuatanga e whakahaere ana i te nui e whakawāteatia ana.

I te rongoā pēhea e puta mai ai ngā whakaahua i tangohia JPG?

Ko te rongoā ōrite ki te pūtake M4V: he 1080p M4V e whakaputa ana i ngā tāpare 1920x1080 JPG, he 4K M4V e whakaputa ana i ngā tāpare 3840x2160 JPG. Kāore te tahuri i te whakapiki, i te whakaiti rānei i te whakapiki - ka tangohia ngā ahu pikitia mai i te tāpare kua whakawaengatia. Ka whakamahia /resize-image/ i muri i te whakataki mēnā e hiahiatia ana e koe ngā whakaahua iti iho.

Ka taea e au te whakawātea i ia tāpare o te M4V hei JPG?

Heoi, engari mā te whakaaro i te tatautanga o te faila — 30 fps 1-rohe M4V e whakaputa ana i ngā tāruatanga 1,800 JPG. Mātou e whakatū i a rātou ki roto i tētahi pūranga ZIP kotahi. Mō ngā tāruatanga roa ake, e manakohia ana te "1 i ia wa" (60 tāruatanga i ia wa), ka kōwhiri rānei i ngā tāruatanga wā. He wā o M4V i ia tāruatanga ka puta mai ~100,000 JPG ngā whakaahua.

Ka pupuri te JPG tāruatanga tae i te M4V?

He — ka whakakōkītia te tae me te poukapa ōrite e whakapuakina ana te pūtake o te pūtake M4V (BT.709 mō te HD, BT.2020 mō te 4K HDR). Ko ngā pūtake HDR he tohu-whakatika ki te SDR ina tangohia ki tētahi JPG kāore e taea te penapena i ngā awhe pikitia HDR māori (JPG, PNG-8). E ūngatia ana te PNG-16, TIFF rānei mēnā e hiahiatia ana e koe te pupuri i te awhe hihiri whakawhānui.

He nui te whāriki i tangohia JPG i runga i te pūrere?

E ai ki te rongoā me te kōwhiringa pūkōrero JPG: he 2-5 MB te whakapeka o te tāruatanga 1080p PNG, he 1080p JPG i te āhuatanga 85, he 200-500 KB. Ka whakarea e te tatau rārangi ki te rahi o te ZIP — i te tino, ko ia tāruatanga PNG rārangi o te 10-rohe 1080p M4V e tata ana ki te 50 GB, ā, ka wehea ki ngā ZIPs maha.

E pupuri ana te JPG whakawātea i ngā raraunga meta EXIF o te kāmera?

Kāore he M4V tāwai e mau ana i te EXIF-per-frame i te āhua e mahi ai tētahi kāmera ā-ariā, nā reira ka puta mai ngā JPG pūranga me ngā kōwae EXIF wātea. Ka whakatū te whakarerekē i tētahi āpure `creation_time` e tohu ana ki te rārangi pūtake o te wā, kia taea ai e koe te whakarōpū anō i te pūnaha i roto i te raupapa wāhanga, ki ngā tohu whakarārangi / wāhanga rānei.

He maha te wā e hiahiatia ana te whakawāteatanga rārangi mai i te M4V ki te JPG?

He tere te whakarerekētanga o te tāpare - i te nuinga o te 20-30% o te roanga pūtake. Ko te 5-meneti M4V -> JPG ka oti i roto i te 1 min ahakoa te maha o ngā tāpare e kōwhiri ana, nā te mea ko te kōwae te JPG encoder e tuhi ana i ngā pūkete iti rawa i te taha kotahi, ehara i te M4V demuxer.

Ka taea e au te whakawātea i ngā tāpare i ngā wā tika i roto i te M4V video?

He — ka whakaaetia e te kōwhiringa wā whakahau tētahi rārangi kāpae-whakahaere (hei tauira, `00:01:23, 00:05:00, 00:10:42.5`) ā, ka whakaputa i tētahi JPG pūranga i ia wā. Ka whai hua mō ngā tātuhi kōwae, ngā tātuhi tohutoro āhua, te hanga rānei i tētahi pepa hoapā mō te arotakenga.

He tūmataiti ahau M4V i te wā o te whakawāteatanga whāriki?

He — te tauira anō o te ātetetanga pēnei i ia tahuritanga. Ko te pūtake M4V me te pūtautau JPG kua whakamātauria i roto i ngā kaimahi motuhake, ā, ka tangohia i roto i ngā minu o te whakaotitanga.

M4V

M4V Ko te hōputu kōnae ataata whakawhanakehia e Apple. He rite ki te MP4 me te whakamahia mo te purei ataata i runga i nga taputapu Apple.

JPG

Ka whakamahi ngā kōnae JPG i te kōpeketanga ngaronga kua arotauhia mō ngā whakaahua, kia iti ai ngā rahi kōnae me te pupuri tonu i te kounga tirohanga.