Mataki na 1: Loda naka MPG 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
MPG zuwa VOB Tambayoyin da ake yawan yi game da Canzawa
Ta yaya zan sake encode MPG zuwa VOB ba tare da rasa ingancin bidiyo ba?
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Ka saukar da fayil ɗinka MPG 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. Abin da ke cikin shi ne MPEG-1 ko MPEG-2 bidiyo da MP2 sauti; muxing da GOP tsari suna daidai da fayil na.mpeg. 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.
An iya canja MPG zuwa VOB ba tare da sake encoding bidiyo ba?
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Ya, kuma wannan shi ne hanya mai sauri. MPG da VOB suna raba irin wannan tsari na akwatin da ke ƙasa, don haka ana kwafe bidiyon da sauti a cikin bayt-by-byte kuma kawai an sake rubuta ƙofar ƙofar. Ba a decode komai ba kuma ba a sake ƙuntata komai ba, don haka fayil mai tsawo na fasali zai ƙare cikin minti daya a maimakon awa daya, tare da ingancin fitarwa na daidai da na asali. MPG shi ne irin shirin MPEG na ruwa kamar yadda.mpeg — wannan fassara ta uku-alƙawari ne DOS-era truncation, ba wani daban format. 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.
Yanzu. MPG ba ta da wata hanyar amfani da sautin-ƙasa-ƙasa, don haka an buɗe sautin-ƙasa ga MPG abun ciki cikin hoton ko kuma an aika da shi kamar fayil na daban. VOB yana da sautin-ƙasa kamar yadda za'a iya zaɓar su a cikin ruwa, don haka bayan canjawa zaka iya haɗa wata hanyar SRT da mai kallo zai iya kunna, kashe ko kuma sake fasalin.
Shin VOB na goyon bayan alamun shafi da MPG ba ta goyon ba?
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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. MPG 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 akwai wani maɓalli na canja tsakanin nau'ikan zane biyu kamar MPG da VOB?
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Idan wani ɓangare na kayan aiki na musamman ya buƙaci manufa. Formats biyu sun zo daga irin wannan lokacin da aka yi kafin H.264, don haka babu wani canji da ke siyar da inganci, inganci ko tabbatarwa a gaba - yana siyar da daidaituwa tare da wani na'ura na musamman. Idan manufar ita ce a riƙe bidiyo mai amfani da dogon lokaci, canja zuwa wani akwatin yanzu maimakon gefe. MPG na riƙe da duk wani MPEG-2 da ya ƙunshi - bitrate mai nauyi, interlacing, ba da softsubs - da kuma damuwa na biyu faɗaɗawa ga daya format. VOB ne raba a kan fayiloli, za a iya CSS-crypted, da ke da navigation packets da shakka general-purpose 'yan wasa.
Wanne codec na bidiyo ne fitarwa VOB take amfani dashi?
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Yana dogara ga kwandon VOB. MP4 na da ƙa'idodin H.264 domin mafi fadin goyon baya na wasa a kan wayoyin hannu, masu bincike, da Smart TVs. MKV na da ƙa'idodin H.265 / HEVC don kusan rabin girman fayil da inganci mai kama. WebM na da ƙa'idodin VP9. Zaɓuɓɓukan ci gaba suna nuna zaɓin codec mai bayyananne idan kana buƙatar canza shi.
Shin za'a iya canza waƙoƙina na sauti daga MPG zuwa VOB?
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Yanzu. Idan MPG da VOB sun raba wani codec na sauti (misala, suna da AAC), za'a sake-muxed sauti ba tare da sake-encoding ba - bit-identical. Idan codecs sun bambanta, za'a sake-encoding sauti zuwa AAC / Opus / Vorbis dangane da abin da ƙuƙuman VOB ke goyon baya. An riƙe sauti na shirye-shirye da yawa (koyarwar, harsuna daban-daban).
Shin zan iya riƙe ƙimar firam na farko idan na canja MPG zuwa VOB?
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A matsayin diff, na'am — 24fps MPG zai zauna 24fps a cikin VOB; 60fps MPG zai zauna 60fps. Idan kana buƙatar canza adadin (misali, interlaced 29.97 → progressive 30, ko 60 → 30 don haɗe-haɗe), zaɓin adadin firam zai kula da 3:2 pulldown, deinterlacing, da frame-blending a cikin mataki na encoding guda.
Menene girman fayil ɗin da zai canza daga MPG zuwa VOB?
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Re-mux na codec-daidai (MPG H.264 → VOB H.264 kawai yana canja kwandon): kusan girman da ya daidaita. Canjin codec na iya yin tasiri: H.264 → H.265 na iya raba fayil zuwa rabin a matsayin ingancin gani; VP9 yana da daidaituwa; 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?
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MP4 / H.264 yana wasa da asali akan kowane na'ura mai zamani. MOV / H.264 yana wasa a kan na'urorin Apple da yawa TV 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 ke zaɓar mafi aminci VOB codec / kwandon don manufarka.
Menene lokacin da za'a yi wa canja bidiyo mai awa 1 zuwa MPG zuwa VOB?
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Re-mux na codec-daidai yana kusa da lokaci-da-lokaci - sakan 30 zuwa 60 ga fayil na sa'a 1. An sake-encode na codec-da-gaske yana tafiya a kusan 0.3-0.7x lokacin asali a kan GPU pipeline ɗinmu, don haka 1-hour MPG → VOB ya ƙare cikin minti 18-40 dangane da daidaita da manufar codec.
Mene ne mafi girman ma'aunin rarraba da ake goyon baya ga MPG zuwa VOB?
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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 MPG and VOB containers support it.
