MOV ku AC3 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndingagwiritse ntchito bwanji mndandanda wa audio kuchokera ku MOV ngati AC3?
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Kutsitsa fayilo ya MOV ndipo wosintha amachotsa mpweya wa audio kuchokera ku MOV, kenako amasintha kukhala AC3. Mavidiyo amatulutsidwa - palibe kanema wachiwiri, palibe kuwonongeka kwabwino kuposa zomwe AC3 codec imayambitsa. MOV ndi Apple QuickTime chidebe, anatumizidwa mu 1991 ndibe mtundu iPhone, iPad kapena Final Cut Pro timeline alemba mwamsanga. AC-3 ndi Dolby Digital, surround mtundu standardized kwa laserdisc, DVD, ATSC kufalitsa ndi sinema mu mapema 1990s.
Kodi kusinthira MOV ku AC3 ndi gawo lachiwiri la kutsitsa kwa lossy?
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Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho AC3 encoder akuchita ntchito kuchokera ku audio yomwe yakhala ikuyenda mwa psychoacoustic pass, ndipo masankho ake oyamba amapanga gawo loyamba. Pa 192 kbps kapena pamwambapa, zotsatirazi ndizosawoneka bwino kwa ambiri owerenga. Ngati muli ndi master yopanda kuwonongeka, kulemba koyamba kwa AC3 kuchokera ku yomwe imalepheretsa kupitanso koyamba. A MOV nthawi zambiri amatenga H.264 kapena HEVC kwa kutumiza, kapena ProRes pamene ndi kusintha mtsogoleri, limodzi ndi AAC kapena uncompressed PCM audio. AC-3 ndi lossy multichannel audio, nthawi zambiri 5.1 pa 384 kapena 448 kbps, ndi metadata kwa dialogue normalization ndi downmixing.
Kodi nyimbo ya audio imatulutsidwa pamene MOV yanga ili ndi zambiri?
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Poyambira, mpweya 0 (woyamba wa nyimbo, nthawi zambiri ndi woyamba kuphatikizidwa). Ngati MOV wanu ali ndi mawu ofotokoza, ma dubbing, kapena mawu ofotokoza pa nyimbo zina, wosankha "mpweya wa nyimbo" akukulola kusankha 1, 2, 3... mwatsatanetsatane. Lipoti la nyimbo limawonekera pa mndandanda woyang'anira kuti musasankhe mwamsanga.
Kodi bitrate imagwiritsa ntchito fayilo ya AC3?
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Default AC3 bitrate ndi 192 kbps (wowoneka bwino kwa nyimbo kwa amayi ambiri). Kusintha kwa 320 kbps kwa audiophile output, kapena 96-128 kbps kwa mawu / podcast komwe fayilo yaying'ono ndi yoyamba. Ma AC3 opanda malire (WAV, FLAC) sasamala za kukhazikitsa kwa bitrate ndikusunga zonse.
Kodi kuchoka ku MOV kupita ku AC3 kumachepetsa mtundu wanga wa audio?
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Ngati AC3 ndi mtundu wopanda kuwonongeka (WAV, FLAC, ALAC), zonse zomwe zimapangidwa zimasungidwa. Ngati AC3 ndi zowonongeka (MP3, AAC, OGG, Opus), codec imabwezeretsa - pa 192 kbps kusiyana kumakhala kopanda kudziwika kwa zinthu zambiri; pa 96 kbps mutha kunena kuti ma cymbals kapena ma sibilants amawoneka. MOV yokhala ndi MOV siyikhudza izi - zosankha za codec ndizofunikira.
Kodi AC3 yosakira imasunga MOV kuchuluka kwa satifiketi?
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Mwa default yes — 48 kHz MOV audio imakhala 48 kHz AC3 audio, 44.1 kHz imakhala 44.1 kHz. Ngati mukufuna kuchepetsa kusamvana kwa kugwirizana (mwachitsanzo, 96 kHz studio masters ku 44.1 kHz CD-quality AC3) mndandanda wolowetsa wa sampling-rate amachita izi ndi kusamvana kwabwino.
Kodi ndingagwiritse ntchito AC3 audio kuchokera ku fayilo ya MOV?
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Yai - chotsani fayilo ya MOV ku gawo lotsitsa ndipo tidzachita kutulutsa mofanana. Premium imalandira ogwira ntchito ambiri mofanana; pa fayilo ya 100 (kusonkhanitsa kwa nyimbo za nyimbo) iyi ndi kusiyana pakati pa masekondi a 90 ndi maola a 8.
Kodi ndi nthawi yayitali bwanji kuti mutenge AC3 kuchokera ku 1-hour MOV?
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Audio demux + transcode imayenda mwachangu kuposa kubwezeretsa kanema - nthawi zambiri 5-15% ya nthawi yoyambira. 1-hour MOV -> AC3 imatha m'maola 3-9 pa standard pipeline. Ngati AC3 codec imagwirizana ndi codec yoyambira yomwe ili mu MOV (yofala kwa AAC m'ma MKV / MP4), ndi remux yoyera ndipo imagwira ntchito m'masekondi.
Kodi fayilo ya AC3 idzakhala ndi dzina / woimba / ma tag a album?
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Ngati fayilo ya MOV imasunga metadata ya stream (mlengi, mutu, album), timakopera masambawa ku AC3 komwe mtundu umathandizira ma tag. ID3v2 (MP3), Vorbis comments (OGG, FLAC), MP4 atoms (AAC / M4A), RIFF INFO (WAV) onse amalemba. Opanda ma tag MOV amapanga AC3 osadziwika - kugwiritsa ntchito Mp3tag kapena Picard kutumiza kunja kuti muwonjezere.
Kodi MOV yanga ndi yapadera panthawi yochotsa audio?
Nchifukwa chiyani AC3 yanga ili ndi zitseko zosadziwika kapena zosayenera?
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Pa nthawi zambiri, index ya stream siyigwirizana - MOV yanu ili ndi maudindo ambiri a audio ndipo tatulutsa ulalo wosayenera (mwachitsanzo, ulalo wofotokozera mawu osalankhula m'malo mwa ulalo wophatikizidwa). Yambitsaninso ndi "audio stream" yosinthidwa yosinthidwa ndi index yoyenera, kapena kusankha "all streams" kuti mutenge ulalo uliwonse ngati fayilo yosiyana ya AC3.
Chilankhulo cha Channel chimatsatira MOV mwa default: 5.1 MOV audio stream imapanga 5.1 AC3 komwe codec imathandizira (AAC, FLAC, OGG, Opus). Chosankha cha channel-downmix chimafuna stereo kapena mono - chothandiza kwa ntchito ya podcast kapena kugwirizana ndi ma speakers a Bluetooth a mono.
