Sinthani MP4 ku MP2

Sinthani Yanu MP4 ku MP2 zolemba molimbika

Sankhani mafayilo anu

*Mafayilo achotsedwa patatha maola 24

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Kukweza

Momwe mungasinthire MP4 ku MP2

Gawo 1: Kutumiza wanu MP4 kutengerapo ndi kuchotsa mafayilo pogwiritsa ntchito batani pamwambapa kapena ndi Shift ndi dziko.

Gawo 2: Dinani 'Transform' batani kuti ayambe kusintha.

Gawo 3: Yamba wanu anasintha MP2 mafayilo

MP4 ku MP2 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingagwiritse ntchito bwanji audio kuchokera ku MP4 fayilo ngati MP2?

Kutsitsa fayilo ya MP4 ndipo tidzachotsa mavidiyo onse, kenako tidzasintha mtundu wa MP2. Palibe kanema wachiwiri wopita ndi kuwonongeka kwa mtundu wa MP2 codec.

Kodi MP2 fayilo imagwiritsa ntchito mtundu uti wa ma bitrate a audio?

Mtengo woyambirira wa MP2 ndi 192 kbps (wowoneka bwino kwa nyimbo). Mukhoza kuchotsa 320 kbps (wokonda mawu) kapena 96-128 kbps (wolankhula / podcast / fayilo yaing'ono). Usankho umakhala wowonekera m'masankho owonjezera.

Kodi ndidzataya mtundu wa audio ngati ndisintha kuchokera ku MP4 kupita ku MP2?

Ngati mtundu wa MP2 ndi wa lossless (WAV, FLAC), mumangosunga zonse zomwe zilipo. Ngati mtundu wa MP2 ndi wa lossy (MP3, AAC, OGG), codec ya MP2 imazichepetsanso — ubwino umadalira bitrate ndi ma audio ochokera. Timagwiritsa ntchito 192 kbps monga default, zomwe ndi zosawoneka bwino kwa zinthu zonse.

Kodi MP2 yotulutsidwa imasunga kuchuluka kwa sampling?

Mwa default yes — 48 kHz audio track mu MP4 imakhala 48 kHz mu MP2. Ngati mukufuna 44.1 kHz (CD-quality) kuti mugwirizane ndi osewera oyambirira, zosankha zowonjezera zimaphatikizapo mndandanda wolowetsedwa wa sampling-rate.

Kodi ndingagwiritse ntchito audio kuchokera ku MP4 mafayilo ambiri kupita ku MP2 munthawi imodzi?

Yes — drop a folder of MP4 files in and we extract audio in parallel. Premium users get more parallel workers; on a 50-file batch this is the difference between 90 seconds and 8 minutes.

Kodi fayilo ya MP2 idzaphatikizidwa ndi mutu / woimba / album?

Ngati MP4 fayilo ili ndi nkhani kapena mndandanda wa metadata, timakopera masamba a woimba / mutu / album ku MP2 kontena. Ngati sichoncho, MP2 fayilo siyimaphatikizidwa — kugwiritsa ntchito wolemba ma tag (Mp3tag, Picard) pambuyo pa kutumiza kunja ngati mukufuna ma tag ochuluka.

Kodi kumatenga nthawi yayitali bwanji kuchotsa MP2 kuchokera ku MP4 fayilo?

Kutulutsa kwa audio ndi kosavuta kuposa kubwezeretsa kanema - nthawi zambiri 5-15% ya nthawi yoyambira. MP4 → MP2 ya 1-hour imatha m'maola 3-9 pa standard pipeline.

Kodi ndingagwiritse ntchito gawo limodzi la MP4 audio ngati MP2?

Sichigwira ntchito ndi chida ichi — chotsani audio yonse monga MP2 pano, kenako mugwiritse ntchito /audio-trim/ kapena /audio-cutter/ kuti muchepetse gawo. Njira ya mawindo awiri nthawi zambiri imayenda mofulumira kuposa ntchito yophatikizidwa.

Kodi fayilo yanga ya MP4 ndi yachidziwitso pamene ndikuchotsa mawu?

Inde — mtundu wofanana wa kuteteza deta monga pazosintha zonse: ogwira ntchito osiyana, kuchotsa kwachidziwitso m'maola ochepa, palibe kuyankha kwa munthu pazomwe zili.

N'chifukwa chiyani fayilo yanga ya MP2 ili ndi zigawo zosadziwika?

Ma gaps osalankhula amatanthauza kuti MP4 imagwiritsa ntchito ma track ambiri a audio ndipo tikusankha ma stream oipa. Pezani "audio stream" kuwonjezera pa kusankha ma stream 0, 1, etc., kapena kuwonjezeranso ma stream onse ku MP2 okhala ndi ma track ambiri ngati MP2 amathandiza izi.

Kodi MP2 yosamutsa imatha kukhala stereo / mono / 5.1?

Chithunzi cha sitima chimasungana kuchokera ku MP4 mwa default — 5.1 MP4 chimatulutsa 5.1 MP2 pamene codec imathandizira (AAC, FLAC, OGG). Mukhoza kuletsa stereo kapena mono pogwiritsa ntchito njira ya channel-downmix, yothandiza pa ntchito ya podcast.

Kodi MP2 yosakira imasewera pa iPhone / Android / stereo yagalimoto?

MP3 imasewera kulikonse. AAC / M4A imasewera pa Apple ndi ambiri a Android. OGG / Opus amafuna wosewera waposachedwapa pa iOS. Zosankha zophunzitsira zimasonyeza "device" yoyamba yomwe imasankha MP2 codec yomwe ingakhale yoyenera kusewera pa chipangizo chanu.