On Mon, 2005-06-20 at 12:29 +0200, =?utf-8?Q?M=E5ns_Rullg=E5rd?= wrote: > 11172-3: MPEG1 audio (mp3) mpeg 1 layer 1/2/3, right? > 13818-3: MPEG2 audio (not aac, that's 13818-7 and 14496-3) mpeg 2 layer 1/2/3 (lower samplerates iirc, 22/11 Khz?, or was it lower bitrates?)