FFMPEG An Intermediate Guide/Audio
If there was space or time we could right a book on audio and how it relates to video, but for practical reasons this should at least serve as a guide. before we get into specifics of audio in ffmpeg, lets take a moment to look at audio as it relates to video.
Light Compressed Audio edit
An compressed audio format can not me used as anything but an intermediate or end user format. If you want to offend an audio engineer give him a compressed format as the master.
The three largest audio codecs available on the market are MP2, MP3 and ACC, of which only MP2 is natively encoded