The Core Audio Format is a audio container format, developed by Apple. CAF files can store beside audio additional data such as text annotations, markers and other metadata.
WMA is a proprietary audio container format of Microsoft. There are 4 codec used in WMA – WMA, WMA Professional, WMA Lossless and WMA Voice. It uses one of the four WMA codec to encode audio. WMA contains the audio file in Advanced Systems Format (ASF) format. The ASF file decides how the metadata will be encoded.
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