ofDirectShowPlayer reverse playback

Hi All,

is it possible to set negative speeds (reverse playback) via setSpeed with ofDirectShowPlayer or is it a limitation of direct show or it's implementation in oF?

I'm trying to do this with an .avi file that has video encoded as MJPG and PCM audio.

I'm testing on Windows 7 with of 0.8.4 in VS2012 using ofxDirectShow and with 0.9.0 in VS2015 using the ofVideoPlayer (as it should be using directshow).

I've also tested the same avi file in 0.8.4/VS2012 with the default VideoPlayer (which uses quicktime) and with ofxGStreamer and it works. I also tried ofxWMFPlayer but setSpeed is not implemented.

Edit:
I've also tested using the 0.9.0/VS2015 videoPlayer example and the default .mov file
fingerMovie.setSpeed(-1.0);
fingerMovie.getSpeed() returns 1.0, and the video doesn't look to be reversed

Thanks,
Jon