[unicron1980]

Most likely this issue: https://bugs.freedesktop.org/show_bug.cgi?id=71753

Yeah, good time to update this old bugreport. When I filed it, I thought I had given all information - but it seems, it does not have that much priority with the oss devs.

Okay, clear. By the way 25fps and 29.97fps are okay, it is just 23.976fps that is the problem.

Didn't one of you also have an AMD fusion e-350? Are you also having the problem? Or anybody else for that matter in this topic?

I did some more testing and 25fps and 29.97 are also not okay with OE4b2.
25fps is being decoded too fast and toggles between 25.02 and 25.05. The result is that the counter of missed frames is increasing, which seems logical as the vblank is running at 50Hz.
29.97fps interlaced is being decoded too slow, usually around 58fps, instead of 59.94fps.
23.976fps is decoded too slow, usually around 23.92/23.95, but sometimes also goes to the high 22's. This results in skipped frames.

I verified with OE3 and there the decoded fps is spot on, giving respectively 25.00fps, 59.94fps and 23.98fps.
In OE4 I tried all kind of combinations of hardware and software decoding, with and without the VDPAU mixer, but the results stay the same. I guess every framerate goes wrong and either is too slow, or too fast.

Seems like the clock that is used for decoding in general on my fusion e-350 goes crazy. I had a look at the new radeon oss source code, but to be honest I have no idea where to begin.