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# Audio and Video Files

If you set the `FFmpegDirectory` parameter in the configuration file, HPE IDOL Speech Server accepts several audio and video file types, such as MP3, MP4, WMA, WMV, MOV, and so on. For a complete list of accepted file formats, see the FFmpeg documentation.

If you do not set the `FFmpegDirectory` configuration parameter, HPE IDOL Speech Server supports only 16-bit, linear, little-endian PCM data with sampling rates of either 8,000 or 16,000 Hz.

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