Mataki na 1: Loda naka MP4 fayiloli ta amfani da maɓallin da ke sama ko ta hanyar ja da sauke su.
Mataki na 2: Danna maɓallin 'Maida' don fara hira.
Mataki na 3: Sauke fayil ɗin da aka canza VOB fayiloli
MP4 zuwa VOB Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake enkoɗa MP4 zuwa VOB ba tare da rasa ingancin bidiyo ba?
+
Ka saukar da fayil ɗinka MP4 kuma mai canzawa zai yi aiki da wani CRF-da aka gina kan sake-sauya-kodi mai nufin fitarwa mai gani-ba-da-hasara VOB (CRF 18 bisa diff, ƙananan kimar = fitaccen fayil / mafi kyawun inganci). An zaɓi codec don ya haɗu da VOB ƙofar — H.264 don MP4 mai girma, H.265 don MKV mai girma, VP9 ga WebM, AV1 ga sabon pipes. A kusa da kowace MP4 a cikin daji ne H.264 bidiyo da AAC sauti; da kwandon kuma doka da aka riƙe HEVC, AV1 da VP9. VOB na da MPEG-2 bidiyo, AC-3 ko PCM sauti, da DVD subpicture subtitle streams, raba zuwa 1 GB segments by the DVD spec.
Shin VOB na goyon bayan alamun shafi da MP4 ba ta goyon ba?
+
Yana yi. VOB na adana sashe kamar metadata na kwandon, don haka za'a iya tafiyar da wani rikodin mai tsawo ta ɓangaren ba tare da rufe wani barar ci gaba ba. MP4 ba ta da wurin da za'a saka wannan bayanin ba, don haka idan mai samarwa ya aiko da jerin sashe ya kasance cikin fayil na sidedcar — ba da wannan zuwa mai canja wurin kuma zai rubuta cikin VOB. VOB na kiyaye duk DVD payload - da yawa angles, da yawa audio harsuna da subtitles layuka duka tsira cikin shi.
Shin, zan iya shigar da fayil a cikin wani shafi na yanar gizo bayan na canja MP4 zuwa VOB?
+
Ba kai tsaye ba. MP4 yana wasa cikin layin cikin duk wani mai bincike; VOB ba haka ba ne, don haka wani shafi mai shigar da shi zai koma zuwa wani alaƙa na saukewa ko wani firam na mai wasa ba. Idan fayil ɗin ya kasance an tsara shi ga wani shafin yanar gizo, ka riƙe MP4 don yanar gizo kuma ka yi amfani da VOB kamar arshiya ko gyara kwafin. VOB ne raba a kan fayiloli, za a iya CSS-crypted, da ke da navigation packets da shakka general-purpose 'yan wasa.
Me yasa zan canza MP4 zuwa wani nau'i na da ya fi dacewa kamar VOB?
+
Saboda wasu kayan aiki ba su taba koyon wani abu mai sabon ba kuma ba za su taba ba. Masu wasa da DVD, na'urorin da ke cikin mota, da kuma hanyoyi na wasa da kamfen, da kuma shirye-shiryen nuna masana'antu da kuma wasu kayan aiki na watsa labarai suna karɓar VOB da kuma babu wani abu. Canja wurin yana da wani mataki na da'awar a cikin inganci, da aka saya a matsayin musayar aiki akan na'ura da ba ta da wani zaɓi na daban.
Mene ne codec ɗin bidiyo da fitarwa VOB take amfani dashi?
+
Yana dogara ga abin da ke cikin VOB. MP4 na da diff zuwa H.264 domin mafi fadin goyon baya na wasa a kan wayoyin hannu, na'urorin bincike, da Smart TVs. MKV na da diff zuwa H.265 / HEVC don kusan rabin girman fayil da inganci mai kama da. WebM na da diff zuwa VP9. Zaɓuɓɓukan ci gaba suna nuna zaɓin codec mai bayyananne idan kana buƙatar sake shi. VOB shi ne akwatin Video Object da aka samu a cikin akwatin VIDEO_TS na kowace DVD - wani MPEG-2 shirin shirin da aka ƙara da DVD-na musamman na bayanai na tafiyarwa.
Shin waƙoƙina na sauti za su iya tsira daga canji daga MP4 zuwa VOB?
+
Na'am. Idan MP4 da VOB suna raba codec na sauti (misal, suna da AAC), za'a sake-muxed sauti ba tare da sake-encode ba - bit-identical. Idan codecs sun bambanta, za'a sake-encode sauti zuwa AAC / Opus / Vorbis dangane da abin da mai riƙe da VOB ke goyon baya. An kiyaye sauti mai layuka da yawa (waƙoƙin sharhi, yarukan dabam-dabam).
Shin zan iya riƙe ƙimar firam na asali idan na canja MP4 zuwa VOB?
+
A bisa diff, na'am — 24fps MP4 zai zauna 24fps a cikin VOB; 60fps MP4 zai zauna 60fps. Idan kana buƙatar canza adadin (misali, interlaced 29.97 → progressive 30, ko 60 → 30 don iyakancewar aikawa), zaɓin adadin firam na kula da 3:2 pulldown, deinterlacing, da kuma haɗe-firam a cikin mataki ɗaya na encoding.
Menene girman fayil ɗin zai canza daga MP4 zuwa VOB?
+
Re-mux na codec-daidai (MP4 H.264 → VOB H.264 kawai yana canja kwandon): girman da ya fi daidai. Canjin codec na iya sauya sosai: H.264 → H.265 na iya raba fayil zuwa rabinsa da ingancin gani na daidai; VP9 yana da kama da haka; AV1 na yanke wani 20-30% amma yana da sauri wajen encoding.
Shin fayil VOB zai iya wasa a kan iPhone, Android, da Smart TVs?
+
MP4 / H.264 yana wasa a kan kowane na'ura mai zaman kansa. MOV / H.264 yana wasa a kan na'urorin Apple da TVs amma ba koyaushe ba a kan Android na daɗaɗɗen. MKV yana buƙatar VLC akan iOS. WebM shine mai bincike na farko. Zaɓuɓɓukan ci gaba sun haɗa da "haɗin kai na na'ura" da aka ƙayyade da farko wanda ke zaɓar mafi aminci VOB codec / kwandon don manufarka.
Menene lokacin da ake buƙata don canja bidiyo mai awa 1 daga MP4 zuwa VOB?
+
Same-codec re-mux yana kusa da lokaci-da-lokaci — sakan 30 zuwa 60 ga fayil na sa'a 1. Full codec re-encode yana tafiyar da kusan 0.3-0.7x lokacin asali a kan GPU pipeline ɗinmu, don haka sa'a 1 MP4 → VOB ya ƙare cikin minti 18-40 dangane da daidaita da manufar codec.
Mene ne mafi girman ma'ana da ake goyon baya ga MP4 zuwa VOB?
+
Har zuwa 8K (7680×4320) akan Premium plans. Free conversions are capped at 4K (3840×2160) by the per-file size limit. HDR metadata (HDR10, HDR10+, Dolby Vision when present) is carried through where both MP4 and VOB containers support it.
Shin bidiyo na MP4 na sirri ne yayin canjawa zuwa VOB?
+
Na'am. An yi amfani da fayilolin bidiyo da aka tura a cikin masu aiki masu tsalle-tsalle, ba a taba ganinsu da wani mutum ba, ba a taba sanya su cikin indiya ba, kuma an share su cikin mintina bayan kammalawa. An yi takardar tagar tsare-tsaren a /privacy/ kuma ba mu wallafa wata takardar koyarwar koyarwar daga masu turawa na masu amfani ba.
