Both ALAC and FLAC are lossless audio formats and files will usually have more or less the same size when converted from one format to the other. I use ffmpeg -i track.flac track.m4a to convert between these two formats but I notice Video and audio file size can be up to 200M. 2. Choose target audio format. The target audio format can be WAV, WMA, MP3, OGG, AAC, AU, FLAC, M4A, MKA, AIFF, OPUS or RA. 3. Click "Convert Now!" button to start batch conversion. It will automatically retry another server if one failed, please be patient while converting.
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