MP4Box has -sbr and -sbrx flags to handle HE-AAC, but what for HE-AACv2?
The decoder has to look for PS data or there is some mp4 signalling that MP4Box can(not) do?

Cheers

Same command...

What did you mean?
-sbr and -sbrx is the same command? (false)
there is the same command for ps (-ps -psx)?
Please be more explicit

For heaac v2, you can use the same command (-sbr for backward compatibility and -sbrx for no backward compatibility).

Concerning decoders : iirc, they don't use this MP4Box flag to handle PS stream. This is only useful when you want to grab some infos about different streams within MP4Box.