MP4 → FLAC

Sinthani Yanu MP4 ku FLAC mafayilo mosavuta

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Kukweza

Momwe mungasinthire MP4 ku FLAC

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 FLAC mafayilo

MP4 ku FLAC Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

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

Kutsitsa fayilo ya MP4 ndipo wosintha amachotsa mpweya wa audio kuchokera ku MP4, kenako amasintha kukhala FLAC. Mavidiyo amatulutsidwa - palibe kanema wachiwiri, palibe kuwonongeka kwabwino kuposa zomwe FLAC codec imayambitsa. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito. FLAC ndi Free Lossless Audio Codec, otsegulira mtundu kuchokera 2001 kuti compresses popanda kuchotsa imodzi chitsanzo.

Kodi kusinthira MP4 ku FLAC 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 FLAC zimasunga zomwe zilibe kanthu - sichoncho. Fayilo imakula nthawi zambiri ndipo imawoneka ngati yofanana. Ndibe njira yoyenera yosinthira, chifukwa FLAC siyiwonjezera chitukuko chachiwiri cha artefacts pamene mukutumiza. FLAC amakupatsani WAV fidelity pa theka la kukula, ndi bwino metadata tags ndi embedded ntchito zojambulajambula, amene ndi chifukwa chake amayang'ana lossless nyimbo laibulale. MP4 amathandiza okha imodzi yotchuka subtitle mtundu (mov_text), ndi multi-traka audio ndi osati olimba m'malo desiki osewera.

Kodi FLAC idzasewera m'galimoto yanga kapena pa hardware yakale?

Nthawi zambiri sichoncho. MP4 imasinthidwa ndi chilichonse, kuphatikizapo magalimoto agalimoto ndi osewera okalamba; FLAC amafunikira mapulogalamu omwe amadziwa codec, omwe nthawi zambiri amakhala ndi zida zosagwirizana. Ngati malo osankhidwa ndi stereo yagalimoto kapena wosewera wonyamula, ndiye kuti ndi chitsimikizo cholimba chokhala pa MP4. FLAC ndibe nthawi zambiri kuposa bwino lossy wapamwamba, ndi Apple's ecosystem anawonjezera kugwirizana koyamba ndi mosasamala.

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 FLAC?

Default FLAC 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 FLAC opanda malire (WAV, FLAC) sasamala za kukhazikitsa kwa bitrate ndikusunga zonse. FLAC amagwiritsa ntchito linear kuyembekezera ndi Rice kulemba kuti afike pafupifupi 50-60% ya mtundu wa asalowetsa pamene decoding kumbuyo kwa bit-identical PCM.

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

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

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

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

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

Ngati fayilo ya MP4 imasunga metadata ya stream (mlengi, mutu, album), timakopera masambawa ku FLAC 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 FLAC 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 FLAC amachitidwa m'mabungwe osiyana ndipo amasungidwa m'maola ochepa. Sitimasewera, sitisunga kapena sitigawana zinthu.

Nchifukwa chiyani FLAC 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 FLAC.