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Recorders that record video typically also record audio as well. However, the audio does not always meet the criteria of minimal needs and recommended best practices for language documentation (uncompressed WAV format, 44.1khz, 16-bit), and is often not useful for linguistic purposes such as phonetic analysis. Many video devices record instead to a compressed audio format such as AAC or MP3, which is combined with the video stream in a wrapper of [[Digital video#Storage formats|various kinds]]. Exceptions to this general rule are the following Video+Audio recorders:
The [https://www.zoom.co.jp/products/field-video-recording/video-recording Zoom] series, particularly the [https://www.zoom-na.com/products/field-video-recording/video-recording/zoom-q8/specs Q8], [https://www.zoom.co.jp/products/field-video-recording/video-recording/q4n-handy-video-recorder#specs Q4n], and [https://www.zoom.co.jp/products/field-video-recording/video-recording/q2n-handy-video-recorder#specs Q2n], which record to multiple video and audio resolutions/formats,
When using a video recorder that does not record audio in WAV format (such as most DSLR cameras), it is recommended to record audio separately on another recorder, following some of the guidelines below. As with the audio recorders described below, many video recorders also accept microphone input of various kinds (generally through an 1/8-inch or TRS connector) - this can ensure a high-quality backup audio recording that is in sync with the recorded video, which can be helpful in some cases (i.e. for transcription).
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