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What's that "audio codec - speech/general" thingy?
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In technical terms, the speech codec uses AMR while the general codec uses ADPCM for compressing audio. AMR is a codec specially designed for compression speech content (conversions). It offers many times higher compression ratio than ADPCM. However, it does not handle all types of audio well - for example, music usually sounds pretty awful... The general thumb of rules is this - use the general codec most of the time. A combination of LOW quality video and Speech codec is best suited for recording long and boring conversations and speeches (in the next upgrade we will also add a no-video mode). DO NOT EVER use the speech codec with Hi quality video setting! The AMR codec pretty much brings the video part to a halt... the result won't be very pretty (ok... you have been warned... use it at your own "risks")
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