> Hi Shawn,
> 
> > Is there a way to mix a JS MP3 to mono VBR by discarding all side information in 
>M/S frames, & downmixing all L/R frames, & re-writing as mono VBR?

I dont' see why it shouldnt work - you don't need to decode,  just unpack the 
frame and then repack it.

Similarly - I've had times where I'd like to pack two mono streams into a 
single Dual channel stereo stream. Or do the reverse - split a dual channel 
stream into two mono streams.

Just curious if there's anything out to do these kind of transofrmations.


> You can't downmix without decoding.

Except that the M/S format has a single good channel which can be used without the 
decoding cycle.

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