MOV → AMR

Wi, e li vo planifye. De fòma yo se lossy, se konsa AMR encoder travay soti nan son ki te deja pase pa yon pass psychoacoustic, ak li tèt li desizyon yo konpoze premye set. A 192 kbps oswa pi wo a rezilta a se toujou transparan pou pifò tande. Si ou gen yon master lossless nenpòt kote, enkodaj AMR soti nan sa evite double pass tout antye. Yon MOV nòmalman pote H.264 oswa HEVC pou livrezon, oswa ProRes lè li se yon edisyon maître, ansanm ak AAC oswa PCM san konpresyon son. AMR se yon codec pale nan band estrech ki kouri ant 4.75 ak 12.2 kbps, ki modèl la nan traktè vokal imen an plis pase spectre son an antye.

Paske yon bò li se yon codec pale pliske yon codec mizik. Li modèlman anndan chante moun epi li dechèp tout sa ki deyò bandwidth telefòn, ki se byen pou yon memo vwa e destructive pou nenpòt ki bagay ak enstriman nan li. Konvèti lwen li pa ka refè frekans ki manke yo - yo pa janm te enkode nan premye plas la. MOV fichiers yo gwo, ak deyò Apple ekosistèm playback sipò se patchier pase MP4 - pi ansyen Android bati ak kèk Smart TVs pral refize yo.

One track, picked automatically: normally the main one, the track with the most channels. This page has no setting to choose a different track and does not list the tracks in the file. If you need commentary or a dub instead, remux the MOV with that track first (VLC or ffmpeg can do this) and convert it again.

A lossy AMR is encoded at 192 kbps by default. The Audio Quality setting also offers 320 kbps for the best quality and 128 kbps for a smaller file. A lossless AMR (WAV, FLAC) ignores the bitrate and keeps every sample.

Si fòma AMR se san pèt (WAV, FLAC, ALAC), tout echantiyon orijinal yo pral konsève. Si AMR se san pèt (MP3, AAC, OGG, Opus), codec la pral re-kompression — a 192 kbps diferans lan pa tande pou pifò kontni; a 96 kbps ou ka tande cymbals oswa sibilants mouye. MOV kontenè a pa gen okenn efè sou sa — sèlman paramèt codec la ki enpòtan.

Pa default, wi — 48 kHz MOV son vin 48 kHz AMR son, 44.1 kHz vin 44.1 kHz. Si ou bezwen fè yon downsampling pou kompatibilite (e. g. 96 kHz studio masters pou 44.1 kHz CD-quality AMR) lis drop-down pou frekans-sampling la fè sa ak yon resampling bon kalite.

Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.

It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame.

Yes. Uploaded MOV files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted AMR are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.

Usually the MOV carries more than one audio track and the one that was converted is silent or secondary. The converter picks one audio track automatically, normally the main one, and this page has no setting to choose a different track. If the wrong one comes out, remux the MOV with the track you want first (VLC or ffmpeg can do this) and convert it again.