If you were streaming something real time which do you think would be faster?
Sending out a lossless compressed package...
Decompressing the lossless compressed package then recompressing it as lossy?
In this you can split the lossless compressed package in 2 so if it is faster to decompress then recompress would it be faster to...
split the lossless package then do to seperate recompressions
split the lossy compressed package in 2 and send it out? (This way the quality is minimally degraded)