[XviD-devel] DXN profiles + b-frames falsely signal Simple Profile

bond b-o-n-d at gmx.net
Fri Apr 8 20:24:09 CEST 2005

i noticed that its possible to choose a dxn profile and enable b-frames, but still the bitstream signals simple profile @ level 3 (eg when chosing the DXN portable profile), which is obviously breaking the mpeg-4 standard, as simple profile doesnt allow b-frames, and will bork correct mpeg-4 implementations relying on this info to be correct

btw divx5 doesnt signal a profile at all in the vo, so signalling SP is surely not part of the dxn profile specs

if there is no smart way of setting the profile according to the used settings (eg b-frames) it might be better to always signal advanced simple profile @ level 5 with the divx profiles, which would be any case of chosen settings correctly matching the mpeg-4 standard



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