MP4 → AMR

Maida Naka MP4 zuwa AMR fayiloli da wahala

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Ana lodawa

Yadda ake canzawa MP4 zuwa AMR

Mataki na 1: Loda naka MP4 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 AMR fayiloli

MP4 zuwa AMR Tambayoyin da ake yawan yi game da Canzawa

Ta yaya zan fitar da waƙa kawai daga MP4 zuwa AMR?

Ka shigar da fayil MP4 kuma mai maida zai demuxe saurin sauti daga cikin kwandon MP4, sa'an nan ya canza shi zuwa AMR. An manta da firam ɗin bidiyo — babu wata biyu ta wucewa da bidiyo, babu asarar ingancin da ke wuce abin da codec ɗin AMR ya gabatar da kansa.

Wanne waƙa ta sauti ake fitarwa idan MP4 na na da yawa?

Da ƙa'idoji, maɗaukakiyar maɗaukakiyar 0 (ɗaukakiyar waƙoƙin sauti na farko, a mafi yawan lokuta maɗaukakiyar maɗaukakiyar). Idan MP4 ɗinka na da sharhi, dubs, ko maɗaukakiyar sauti mai bayani a kan waƙoƙin sauti na ƙarshe, mai zaɓar "ɗaukakiyar waƙoƙin sauti" na ci gaba yana ba ka damar zaɓar 1, 2, 3... da bayyananne. An nuna jerin waƙoƙin a cikin nunawa kafin upload don haka ba za ka iya zaɓar da ba a gani ba.

Mene ne bitrate ɗin da fayil AMR ke amfani da shi?

Dimba AMR na bitrate shine 192 kbps (mai haske ga kiɗa ga mafi yawan kunnuwa). Ka sake zuwa 320 kbps ga fitarwa mai sauti, ko 96-128 kbps ga magana / podcast inda fayil ɗin da ke da ƙarancin girma shine mafi muhimmanci. AMR masu dauke da asara (WAV, FLAC) suna manta da daidaitattun bitrate kuma suna riƙe da kowane misali.

Shin tafiya daga MP4 zuwa AMR za ta rage ingancin sautina?

Idan AMR format ɗin ba ta da asara (WAV, FLAC, ALAC), za'a kiyaye kowace misali ta asali. Idan AMR format ɗin yana da asara (MP3, AAC, OGG, Opus), codec ɗin zai sake ƙuƙunta — a 192 kbps bambancin ba zai ji ba ga mafi yawan abun ciki; a 96 kbps za ka iya jin cimbals ko sibilants suna da sauƙi. Kontainer ɗin MP4 ba shi da wata tasiri a kan wannan — kawai daidaitattun codec ɗin ne suke da muhimmanci.

Shin an fitar da AMR yana riƙe da ƙimar misali MP4?

By default yes — 48 kHz MP4 audio becomes 48 kHz AMR audio, 44.1 kHz becomes 44.1 kHz. If you need to downsample for compatibility (e.g. 96 kHz studio masters to 44.1 kHz CD-quality AMR) the sample-rate dropdown does this with high-quality resampling.

Shin zan iya fitar da sauti AMR daga wata takardar shaidar da ke da fayiloli MP4?

Na'am — ka saka wata ƙuƙwalwar MP4 fayiloli cikin yankin shigarwa kuma mu yi fitarwa a cikin daidaito. Premium na samun ma'aikata masu daidaito da yawa; akan ƙuƙwalwar 100-fayil (ta hanyar tattara fina-finai da bidiyo) wannan shine bambancin tsakanin sakan 90 da minti 8.

Menene lokacin da ake buƙata don fitar da AMR daga cikin MP4 na awa 1?

Audio demux + transcode yana tafiya da sauri fiye da sake- encoding na bidiyo - a kan 5-15% na lokacin asali. 1-hour MP4 -> AMR ya ƙare cikin minti 3-9 a kan hanyar ruwa ta ƙa'ida. Idan AMR codec ya haɗu da codec na asali a cikin MP4 (wanda ake amfani da shi ga AAC cikin MKV / MP4), shi ne wani remux na gaskiya kuma yana tafiya cikin sakan.

Shin fayil AMR zai ɗauki suna / mai waƙa / alamar alƙawari?

Idan fayil MP4 ya adana metadata na ruwa (mawaki, suna, alƙawari), za mu kwafe waɗannan fannoni cikin ƙofar AMR inda siffar ke goyon bayan alamomin. ID3v2 (MP3), Vorbis comments (OGG, FLAC), MP4 atoms (AAC / M4A), RIFF INFO (WAV) an rubuta su duka. MP4 da ba'a yi masa alama zai samar da AMR da ba'a yi masa alama ba — yi amfani da Mp3tag ko Picard bayan- fitarwa don ya zama mai albarka.

Shin MP4 na na sirri ne yayin fitar da sauti?

Na'am — irin wannan siffar sirri kamar duk canji. An yi aiki da tushen MP4 da fitarwa AMR a cikin ma'aikata masu tsallakewa kuma an share su cikin minti. Ba za mu taba wasa, adana, ko raba abun ciki ba. Ka duba /privacy/.

Me yasa AMR na ke da kurakurai ko kuma sauti mara kyau?

A ko'ina akwai rashin daidaituwa tsakanin maɓallin maɓallin maɗaukaki na maɗaukakiya — MP4 ɗinka ya kasance da tsari na sauti mai maɓallan da yawa kuma mun fitar da maɓallin maɓallin da ba daidai ba (misal, maɓallin maɓallin sauti mai bayani mai ɓoye a matsayin maɓallin maɓallin maɗaukakiya). Yi sake-rarraba tare da zaɓin "maɓallin maɓallin sauti" na ci gaba da daidaita zuwa maɓallin maɓallin dama, ko kuma zaɓi "duk maɓallin maɓalli" don fitar da kowace maɓalli a matsayin fayil na AMR daban.

Shin an iya fitar da AMR cikin stereo, mono, ko kuma 5.1?

Tsarin layin ya bi MP4 bisa diff: 5.1 MP4 layin sauti yana samar da 5.1 AMR inda codec ɗin ke goyon baya (AAC, FLAC, OGG, Opus). Zaɓin layin-saukar-da-haɗawa yana tilasta stereo ko mono — mai amfani ga gudun aiki na podcast ko daidaituwa da masu magana na Bluetooth mono kawai.

Shin an fitar da AMR zai iya wasa a kan iPhone / Android / stereo na motar?

MP3 yana wasa a duniyar gabaɗaya. AAC / M4A yana wasa a Apple da mafi yawan Android, ciki har da masana'antar stereos na motar daga 2014+. OGG / Opus yana buƙatar mai wasa na ƙarshe kuma zai iya zama ba zai yi aiki ba a cikin tsarin infotainment na daɗaɗɗa. Maɓallin rufewa na na'urar-ciki mai zurfi yana zaɓar mafi aminci AMR codec don manufar da ka zaɓa.

MP4

Tsarin kwantena na MP4 zai iya ɗaukar bidiyo, sauti, ƙananan bayanai, da hotuna a cikin fayil guda tare da matsi mai kyau.

AMR

AMR (Adaptive Multi-Rate) wani tsari ne na matsawa mai jiwuwa wanda aka inganta don lambar magana. An fi amfani da shi a cikin wayoyin hannu don rikodin murya da sake kunna sauti.