M4V ku VOB Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndingasinthire bwanji M4V kupita ku VOB popanda kubwezeretsa kanema wa kanema?
+
Ngati ma kontena a M4V ndi VOB angagwiritse ntchito codec yomweyo (H.264, H.265, VP9, AV1), wosintha amabwerera ku remuxer: ma streams oyamba amakopedwa ndi byte-by-byte ku VOB kontena ndipo amasintha kokha. Remux ya 1 GB M4V ku VOB nthawi zambiri imatha m'masekondi a 5-15 ndi kuwonongeka kwabwino. Structurally M4V ndi MP4 - H.264 kapena HEVC ndi AAC - ndi osankhika Apple FairPlay DRM ndi iTunes bokosi metadata. A VOB ali MPEG-2 kanema, AC-3 kapena PCM audio, ndi DVD subpicture subtitle masamba, anagawa mu 1 GB segments ndi DVD spec.
Zina M4V mafayilo amasinthidwa pa level bitstream ndi sitolo kapena pulogalamu yomwe idatulutsa, ndipo kusinthidwa kwa encrypted stream sikungathe kusinthidwa ndi ife kapena ndi chilichonse popanda chida cha lisensi. Fayilo yomwe mwalemba, kutumiza kunja kapena kutsitsa osatetezedwa imasintha bwino; kugula kwa licensed sichidzachitika, ndipo palibe wosintha yemwe anganene mosasamala kanthu. DRM-kuteteza M4V kugula sangakhale anasinthidwa ndi chilichonse; okha unprotected M4V owona ndi convertable, ndi non-Apple osewera nthawi zambiri ayenera kuwonjezeka anasintha dzina.
Nchifukwa chiyani ndingasinthire M4V ku mtundu wachikhalidwe monga VOB?
+
Chifukwa cha zinthu zambiri za hardware zomwe sizikuphunzira chilichonse chokhudzana ndi zinthu zatsopano komanso sizingatheke. DVD osewera, mayunitsi agalimoto, makamera osewera, mawonetsero amakampani ndi zida zambiri zofalitsa zofalitsa zimavomereza VOB ndi chilichonse chokhudzana ndi chilichonse. Kusinthana ndi njira yoyenera yotsika pamlingo, yogulitsidwa m'malo mwa ntchito pa chipangizo chomwe sichingakhale ndi njira ina. VOB amateteza zonse DVD payload - multiple angles, multiple audio zinenero ndi subtitle nyimbo zonse kupulumuka m'nyumba yake.
Kodi ma audio ambiri adzapulumuka kusinthidwa kwa M4V kupita ku VOB?
+
Ndikoyenera - zonse zolemba za audio mu M4V (kuwunika kwa woyang'anira, mabungwe osiyanasiyana, mawu ofotokoza) amasungidwa mu VOB pamene chikwama chofunikira chimathandizira ma audio ambiri. MKV ndi MOV amayendetsa ma audio osatha; MP4 amathandizira ambiri koma ena osewera a hardware amawona kokha track 1; WebM imatha pa Opus / Vorbis track. VOB ndi Video Object wonyamula anapeza mu VIDEO_TS wapamwamba wa aliyense DVD - MPEG-2 pulogalamu mtsinje ndi DVD-osiyana kuyendera deta anawonjezera.
Kodi ma subtitle amasunga zosunga pamene M4V amasinthidwa kuti VOB?
+
Ma subtitle olimba (ma tracks osankhika) amapulumuka pamene VOB angawagwiritse ntchito: MKV amagwiritsa ntchito SRT, ASS, SSA, PGS, VobSub mwachilengedwe; MP4 amagwiritsa ntchito mov_text (format yosasinthasintha). Kusintha MKV ndi subs a ASS ku MP4 kumawawononga kuti akhale mov_text kapena kuwalemba. Hardsubs (olembana mu kanema) amagwiritsa ntchito ngakhale.
Kodi M4V mpaka VOB amasunga masamba olemba / kuyendera kwa DVD?
+
Metadata ya bokosi limasintha pakati pa M4V ndi VOB pamenepo onse awiri amapereka bokosi la atomu (MKV, MP4, MOV). WebM imasunga bokosi m'ma block ogwirizana ndi Matroska, choncho MKV <-> WebM bokosi limayenda molimba. AVI sichimakhala ndi bokosi la spec, choncho kusintha kwa AVI ku VOB kumabweretsa fayilo yosasinthika ngati simuwonjezera ma markers m'manja.
Kodi ndi chiyani za MKV zowonjezera (fonti, kusindikiza) pamene mukupita M4V ku VOB?
+
MKV ndi yokha mainstream yokhala ndi ma fayilo ophatikizidwa (TTF fonts for ASS subs, JPG cover art, fan-translated PDF inserts). Kuchokera ku M4V kupita ku VOB kumachotsa ma attachments pamene VOB si MKV - ma streams elementary amasinthidwa, koma payload ophatikizidwa amakhala m'malo ochokera. Tengani M4V ngati chitetezo ngati mumatengera ma fonts ophatikizidwa.
Kodi codec yomwe VOB imagwiritsa ntchito ndi yosasinthika?
+
Kodiyi ya default imasankhidwa kuti igwirizane ndi VOB yokhala ndi katundu: MKV imasinthidwa kukhala H.265 (HEVC) kuti ikhale yolimba kwambiri; MP4 imasinthidwa kukhala H.264 kuti ikhale yolimba kwambiri; WebM imasinthidwa kukhala VP9; AVI imagwiritsa ntchito MPEG-4 ASP (DivX / Xvid linage). VOB ndi kugawidwa pakati pa mafayilo, angagwiritsidwe ntchito CSS-encrypted, ndi kunyamula navigation packets kuti kukhumudwitsa cholinga chazikulu osewera.
Kodi HDR (HDR10, Dolby Vision) imatha bwanji M4V mpaka VOB?
+
HDR static metadata (HDR10 mastering display values, max content light level) imatha kupita ku VOB pamene ma kontena awiri ndi codec osankhidwa amathandizira (HEVC, AV1 mu MKV / MP4). Dolby Vision ndi wolimba kwambiri - DV profile 5 / 7 / 8.1 mu M4V nthawi zambiri amapulumuka okha ku MKV ndi HEVC; kusinthidwa ku VOB kontena lomwe silitha kunyamula gawo la DV limatha ku HDR10.
Kodi wosinthira M4V mpaka VOB adzasunga kusinthasintha kwa framerate (VFR)?
+
MKV ndi WebM amalemba ma timestamps a real-frame ndi kuwongolera VFR mwanjira yachibadwa, kotero kuti M4V VFR imatha kukhala ndi VOB ya mafomuwa popanda kubwezeretsa. MP4 imasunga nthawi yowonjezerapo koma ena osewera amaganiza kuti CFR; wosintha amatulutsa "kulepheretsa CFR" kuti abwezeretse VFR M4V ku 24 / 30 / 60 fps VOB kwa zolinga zosatheka.
Remux ya codec yomweyo imatulutsa kukula kwakukulu (kuphatikiza kwa kontena kumasiyana ndi 0.1-2%). Kusintha kwa codec kungapangitse kukula kwa 50% kapena kuposa: H.264 kupita ku H.265 kumatha kuchepetsa fayilo pazomwe zimawoneka bwino; H.264 kupita ku AV1 kumatha kuchepetsanso panthawi ya slow.Kuchokera ku high-bitrate M4V (Blu-ray rip) kupita ku low-bitrate VOB (kutsitsa pa intaneti) ndichifukwa chofala kwambiri cha kugwa kwakukulu.
Ndiyo mpaka 8K (7680x4320) pa Premium. Mlingo wopanda malire umatha 4K (3840x2160) mpaka kumapeto kwa fayilo ya 1 GB. Ma remuxes oyera (kupita kwa codec yofanana) ya M4V yokulirapo kupita ku VOB amalepheretsa I / O ya diski, osati CPU - 30 GB M4V amasinthanso kupita ku VOB m'miphindi yochepa popanda kuyankhulana. Amasinthanso kukula ndi kuchuluka kwa ma pixel.
