C:\Users\Micechal\Desktop\mpv-i686-latest>mpv a.mkv
Playing: a.mkv
Detected file format: Matroska
Clip info:
 TITLE: RetroArch video dump
 ENCODER: Lavf54.37.100
[stream] Video (+) --vid=1 (h264)
[stream] Audio (+) --aid=1 (*) (flac)
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [lavc:h264]
Selected audio codec: FLAC (Free Lossless Audio Codec) [lavc:flac]
AO: [wasapi] 96000Hz stereo 2ch float
AV: 00:00:00 / 00:04:21 (0%) A-V:  0.000
VO: [opengl] 256x240 => 256x240 gbrp
AV: 00:01:31 / 00:04:21 (35%) A-V:  0.444 Late: 4125