MP4 → OGG

Sinthani Yanu MP4 ku OGG mafayilo mosavuta

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Kukweza

Momwe mungasinthire MP4 ku OGG

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 OGG mafayilo

MP4 ku OGG Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

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

Kutsitsa fayilo ya MP4 ndipo wosintha amachotsa mpweya wa audio kuchokera ku MP4, kenako amasintha kukhala OGG. Mavidiyo amatulutsidwa - palibe kanema wachiwiri, palibe kuwonongeka kwabwino kuposa zomwe OGG codec imayambitsa. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito. OGG ndi Xiph.Org chidebe, nthawi zambiri kunyamula Vorbis audio, anapangidwa mu 2000 monga patent-free kusintha kwa MP3.

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

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho OGG 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 kuwonongeka, kulemba koyamba kwa OGG 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. Vorbis m'ma OGG ndi lossy ndi amagwiritsa ntchito kusinthasintha bitrate mwa kuipa, kotero ubwino ndi kuika monga mbali kuposa fixed kbps figure.

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

Nthawi zambiri sichoncho. MP4 imasinthidwa ndi chilichonse, kuphatikizapo magalimoto agalimoto ndi osewera okalamba; OGG 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. OGG ali woipa hardware thandizo - car stereos, zakale iPods ndi TV ambiri sadzaona fayilo pa zonse.

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 OGG?

Default OGG 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 OGG opanda malire (WAV, FLAC) sasamala za kukhazikitsa kwa bitrate ndikusunga zonse.

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

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

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

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

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

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

Nchifukwa chiyani OGG 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 OGG.