Cannot use it with ffplay or ffmpeg

[jessejiang0214]

I build it successfully, but cannot play the demo video file with ffplay. I use ffmpeg-2.0.1, copy ffmpeg ffplay and postproc-52.dll into output path. I downloaded the video from http://www.libde265.org/downloads-videos/. Then run ffplay -an -loglevel debug demo.mkv. It cannot display video and there is an error "demo.mkv could not open codecs"

How to solve this issue? is this ffmpeg is too old or I should use new libde265.c in avcodec?