Re: Bug report: jerky playback of 1080i with vdpau and 8400gs
Sorry, yes, this isn't fixed for G98. A bug has been filed, but there's no status update yet.
FYI, the analysis was that the bitstream itself is bad (it has too many macroblocks in some pictures). Some HW (and evidently ffmpeg SW decode) handles this better than others. For G96, there was also a separate driver bug that was fixed.