mpeg2 hw decoding swapping lines of progressive picture
Happens with vaapi, vdpau (Deinterlace not in the loop).
Does not happen with mplayer/ffplay.
ex: mplayer VTS_01_0.VOB -idle -fixed-vo -vo vdpau
(Looking at the logs, seems mplayer allocates 2 more buffers before swap.)
Edited by François Cartegnie