MP4 → WAV

Sinthani Yanu MP4 ku WAV mafayilo mosavuta

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Kukweza

Momwe mungasinthire MP4 ku WAV

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 WAV mafayilo

MP4 ku WAV Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingagwiritse ntchito bwanji mndandanda wa audio kuchokera ku MP4 ngati WAV?

Kutsitsa fayilo ya MP4 ndipo wosintha amachotsa mpweya wa audio kuchokera ku MP4, kenako amasintha kukhala WAV. Mavidiyo amatulutsidwa - palibe kanema wachiwiri, palibe kuwonongeka kwabwino kuposa zomwe WAV codec imayambitsa. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito. WAV ndi Microsoft ndi IBM RIFF-ogwirizana audio chidebe kuchokera 1991, ndipo ndi zimene pafupifupi aliyense audio interface ndi DAW amalemba pa record.

Kodi kusinthira MP4 ku WAV kumawonjezera mtundu wa audio?

Sichoncho, ndipo ndibwino kuti mukhale wopanda kanthu: palibe chomwe chingachitike. MP4 chomwe chatha kuchotsa mfundo zazikulu panthawi yake yoyamba yolemba, ndikuyika zomwe zilibe kanthu WAV zimasunga zomwe zilibe kanthu - sichoncho. Fayilo imakula nthawi zambiri ndipo imawoneka ngati yofanana. Ndibe njira yoyenera yosinthira, chifukwa WAV siyiwonjezera chitukuko chachiwiri cha artefacts pamene mukutumiza. WAV ndi bwino mtundu kwa kusintha, mastering ndi archiving, chifukwa chakuti angathe re-encoded nthawi iliyonse popanda kusonkhana artefacts. MP4 amathandiza okha imodzi yotchuka subtitle mtundu (mov_text), ndi multi-traka audio ndi osati olimba m'malo desiki osewera.

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 WAV?

Default WAV 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 WAV opanda malire (WAV, FLAC) sasamala za kukhazikitsa kwa bitrate ndikusunga zonse. WAV nthawi zambiri amasunga raw uncompressed PCM - aliyense sample anatenga moyenera, pa zimene bit kuwala ndi sampling rate anathawa.

Kodi kuchoka ku MP4 kupita ku WAV kumachepetsa mtundu wanga wa audio?

Ngati WAV ndi mtundu wopanda kuwonongeka (WAV, FLAC, ALAC), zonse zomwe zimapangidwa zimasungidwa. Ngati WAV 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 WAV yosakira imasunga MP4 kuchuluka kwa satifiketi?

Mwa default yes — 48 kHz MP4 audio imakhala 48 kHz WAV 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 WAV) mndandanda wolowetsa wa sampling-rate amachita izi ndi kusamvana kwabwino.

Kodi ndingagwiritse ntchito WAV 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 WAV kuchokera ku 1-hour MP4?

Audio demux + transcode imayenda mwachangu kuposa kubwezeretsa kanema - nthawi zambiri 5-15% ya nthawi yoyambira. 1-hour MP4 -> WAV imatha m'maola 3-9 pa standard pipeline. Ngati WAV 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 WAV idzakhala ndi dzina / woimba / ma tag a album?

Ngati fayilo ya MP4 imasunga metadata ya stream (mlengi, mutu, album), timakopera masambawa ku WAV 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 WAV osadziwika - kugwiritsa ntchito Mp3tag kapena Picard kutumiza kunja kuti muwonjezere.

Kodi MP4 yanga ndi yapadera panthawi yochotsa audio?

Yes - mtundu wofanana wa privacy monga pazosintha zonse. Source MP4 ndi output WAV amachitidwa m'mabungwe osiyana ndipo amasungidwa m'maola ochepa. Sitimasewera, sitisunga kapena sitigawana zinthu.

Nchifukwa chiyani WAV 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 WAV.

Kodi WAV yotulutsa ikhoza kukhala stereo, mono, kapena 5.1?

Chilankhulo cha Channel chimatsatira MP4 mwa default: 5.1 MP4 audio stream imapanga 5.1 WAV 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.