MP4 → M4R

Sinthani Yanu MP4 ku M4R mafayilo mosavuta

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kapena dinani ndi kuchotsani mafayilo anu apa

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Kusintha owona ufulu, Pro ogwiritsa angakonzekere zambiri zochuluka owona; Kulembetsa Tsopano

Kukweza

Momwe mungasinthire MP4 ku M4R

Gawo 1: Kwezani yanu MP4 mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa M4R mafayilo

MP4 ku M4R Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingapeze bwanji audio kuchokera ku fayilo yanga ya MP4 ngati M4R?

Ikani fayilo ya MP4 ndipo wosintha amachotsa mpweya wa audio, kenako amasintha ku M4R. Palibe gawo lachiwiri la kanema - mndandanda wowoneka umathetsedwa mofulumira, chifukwa chake kutulutsa kulibe pang'onopang'ono kuposa kubwezeretsa kwathunthu. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito. M4R ndi iPhone ringtone - a osiyana AAC wapamwamba mu MP4 chidebe ndi kuwonjezeka anasintha kuti iTunes amapereka izo monga tone.

Kodi kusinthira MP4 ku M4R ndi gawo lachiwiri la kutsitsa kwa lossy?

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho M4R 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 kusowa, kulemba koyamba kwa M4R kuchokera ku yomwe imalepheretsa kupitanso koyamba. Zikuoneka kuti pafupifupi aliyense MP4 m'munda ndi H.264 kanema ndi AAC audio; chidebenso mwalamulo ali HEVC, AV1 ndi VP9. Payload ndi AAC, conventionally capped pa 40 masekondi, amene ndi m'mimba mwake iOS adzavomereza.

Kodi chimachitika ndi ma audio ambiri a multichannel pamene amasintha MP4 ku M4R?

Idzaikidwa pansi pa stereo, chifukwa M4R siyimakhala ndi njira yogwiritsira ntchito ma channel ambiri. Kulowetsa kumagwiritsa ntchito ma coefficients ovomerezeka kuti ma channel apakati azikhala owoneka bwino ndipo ma surrounds amaphatikizidwa pamalingaliro otsika. Chomwecho chilichonse chomwe chimadalirika pa malo osiyana a ma channel chimapita pamene ichi chikuchitika. M4R ndi Apple-khama ndi m'lifupi zokwanira; chilichonse kuposa 40 masekondi ndi chisoni anakana ndi foni.

Kodi ndi mtundu uti wa audio bitrate womwe M4R wowonjezeredwa amagwiritsa ntchito?

Default bitrate for lossy M4R is 192 kbps, which is transparent for music. You can override to 320 kbps (audiophile) or 96-128 kbps (voice / podcast / smaller file). The bitrate dropdown is exposed in the advanced options before you click convert.

Kodi ndidzataya mtundu wa audio kuchokera ku MP4 kupita ku M4R?

Ngati M4R ndi yopanda kusowa (WAV, FLAC), zonse zimasungidwa moyenera. Ngati M4R ndi yowonongeka (MP3, AAC, OGG, Opus), codec ya M4R imabwezeretsa ma audio ochokera - pa 192 kbps zotsatira zake ndizosawoneka bwino kwa pafupifupi zonse zomwe zili. Kupita kwa lossy → lossless sikubwezeretsanso deta yomwe yatulutsidwa kale.

Kodi M4R audio imasunga kuchuluka kwa sampling?

Mwa default yes — 48 kHz audio mu MP4 yanu imakhala 48 kHz mu M4R output. Kuti mugwiritse ntchito CD- burning kapena kugwirizana kwa osewera oyambirira, mutha kulowetsa ku 44.1 kHz pogwiritsa ntchito sample- rate dropdown; resampler ndi yopanda malire SoX- grade.

Kodi ndingagwiritse ntchito ma audio kuchokera ku MP4 mafayilo ambiri kupita ku M4R mu bajeti imodzi?

Yai - chotsani fayilo ya MP4 ndikupanga ma audio mofanana. Ogwiritsa ntchito premium amalandira ogwira ntchito mofanana; pa fayilo ya 50-file batch iyi ndi kusiyana pakati pa maola angapo ndi maola asanu ndi awiri.

Kodi M4R idzafotokozedwa ndi metadata ya mutu / woimba / album?

Ngati MP4 imabweretsa gawo kapena metadata ya stream, timakopera dzina / woimba / album fields ku M4R container. Ngati sichoncho, M4R imatuluka osadziwika - kugwiritsa ntchito wolemba tag (Mp3tag, Picard) pambuyo potumiza kunja kwa tagging yochuluka.

Kodi ndi nthawi yayitali bwanji kuchotsa M4R audio kuchokera ku 1-hour MP4?

Audio demux + encode ndiyabwino - nthawi zambiri 5 mpaka 15% ya nthawi yoyambira. 1-hour MP4 → M4R imatha m'maola 3 mpaka 9 panthawi yoyenera; Premium parallelism imachepetsa izi kuwonjezera pa ntchito za batch.

Kodi ndingagwiritse ntchito gawo limodzi la MP4 audio ngati M4R?

Sichipezeka m'chida ichi mwachindunji - chotsani audio yonse ngati M4R, kenako kugwiritsa ntchito /audio-trim/ kapena /audio-cutter/ kuti muchepetse gawo. Mtunda wa maulendo awiri nthawi zambiri umathamanga kuposa ntchito yophatikizidwa ndipo imakupatsani kuwongolera bwino kwa waveform-level.

Kodi fayilo yanga MP4 ndi yapadera nthawi yochotsa audio?

Yes — chitsanzo chimodzimodzi cha kuteteza deta monga pazosintha zonse: ogwira ntchito osiyana, palibe kuyankha kwa munthu, kuchotsa kwachidziwikire m'maola ochepa a kumaliza.

Nchifukwa chiyani fayilo ya M4R ili ndi ma gaps osakwiya pomwe MP4 anali ndi mawu?

Kuphatikiza apo, nthawi zambiri kumasankhidwa bwinobwino: MP4 ili ndi mavidiyo ambiri ndipo demuxer idasankha mavidiyo opanda pake kapena othandizira. Mutha kugwiritsa ntchito "audio stream" wosankha kuti musankhe mavidiyo 0, 1, 2 mosasamala kanthu, kapena kulenga M4R wokhala ndi mavidiyo ambiri (FLAC, OGG).