Kodi nyimbo ya audio imatulutsidwa pamene MP4 yanga ili ndi zambiri?
+
Poyambira, mpweya 0 (woyamba wa nyimbo, nthawi zambiri ndi woyamba kuphatikizidwa). Ngati MP4 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?
+
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 MP4 kupita ku AC3 kumachepetsa mtundu wanga wa audio?
+
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. MP4 yokhala ndi MP4 siyikhudza izi - zosankha za codec ndizofunikira.
Kodi AC3 yosakira imasunga MP4 kuchuluka kwa satifiketi?
+
Mwa default yes — 48 kHz MP4 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 MP4?
+
Yai - chotsani fayilo ya MP4 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 MP4?
+
Audio demux + transcode imayenda mwachangu kuposa kubwezeretsa kanema - nthawi zambiri 5-15% ya nthawi yoyambira. 1-hour MP4 -> AC3 imatha m'maola 3-9 pa standard pipeline. Ngati AC3 codec imagwirizana ndi codec yoyambira yomwe ili mu MP4 (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?
+
Ngati fayilo ya MP4 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 MP4 amapanga AC3 osadziwika - kugwiritsa ntchito Mp3tag kapena Picard kutumiza kunja kuti muwonjezere.
Kodi MP4 yanga ndi yapadera panthawi yochotsa audio?
Nchifukwa chiyani AC3 yanga ili ndi zitseko zosadziwika kapena zosayenera?
+
Pa nthawi zambiri, index ya stream siyigwirizana - MP4 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 MP4 mwa default: 5.1 MP4 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.
MP3 imasewera padziko lonse lapansi. AAC / M4A imasewera pa Apple ndi ambiri a Android, kuphatikizapo ma stereo a fakitale a 2014 + +. OGG / Opus amafunikira wosewera waposachedwa ndipo angasamalire pamalo oyambirira a infotainment. Kutsitsa kwa chipangizo chofunikira chimasankha kotetezeka kwambiri AC3 codec kwa chida chomwe mwasankha.
