Latexxx
Jan 15 2005, 15:53
On a moment of utter apathy I started reading ETSI TS 101 154. It is the specification for embedding different kind of audio and video streams into a dvb mpeg-2 transport stream. This new revision (January 2005) includes HE AAC and I noticed that the spec speaks about different levels and a quick google search didn't reveal anything about this issue. Could somebody enlighten me about these different leves? According to the spec stereo is supported upto level 2 and multichannel upto level 4. Does it mean parametric stereo or what?
As far as I remember it has to do with the number of channels and sampling rate.
Latexxx
Jan 16 2005, 02:24
So it hasn't anything to do with PS?
Robredo
Jan 18 2005, 22:14
They are about number of channels, max sampling rate of AAC and/or SBR. Info can be found in ISO/IEC 14496-3 Amd.1:2003
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