Tim Nicholson <nichot20 <at> yahoo.com> writes: > >> Yes. Not uncommon in .mov to have L R L R. > > > > Could you provide a sample? > > http://www.datafilehost.com/download-cb948a88.html The file has four streams, you were originally asking to tag a stream with four channels as LRLR, I don't think this is (easily) possible. Carl Eugen