Hi,
if target bitrate/size is the main goal, then quality, but if encoding speed/time does not count, would you prefer a), the 2pass-encoding, over b)? My understanding of 2pass is, it does a full vbr encode in the first part and the can make assumptions on the material, which it uses for a full vbr encoding in the second pass. IOW, in the first pass it detects the necessary <qval> for the 2nd pass command line: "-q <qval>" in order to achieve the desired bitrate. My guess is that 2pass would benefit from full vbr encoding, whereas sheer "-br" 1-pass uses a more conservative abr algorithm...
a) ... -br 100000 -2pass ...
b) ... -br 100000
Thanks.