description, duration=55.0, min-media-duration=470.0, seek=true, reverse-playback=true
seek, name=backward-seek,      playback-time=0.0,   rate=-1.0,  start=0.0, stop=310.0, flags=accurate+flush
seek, name=forward-seek,       playback-time=305.0, rate=1.0,   start=305.0, flags=accurate+flush
seek, name=Fast-forward-seek,  playback-time=310.0, rate=2.0,   start=310.0, flags=accurate+flush
seek, name=Fast-backward-seek, playback-time=320.0, rate=-2.0,  start=0.0, stop=320.0, flags=accurate+flush
seek, name=Fast-forward-seek,  playback-time=310.0, rate=4.0,   start=310.0, flags=accurate+flush
seek, name=Fast-backward-seek, playback-time=330.0, rate=-4.0,  start=0.0, stop=330.0, flags=accurate+flush
seek, name=Fast-forward-seek,  playback-time=310.0, rate=8.0,   start=310.0, flags=accurate+flush
seek, name=Fast-backward-seek, playback-time=350.0, rate=-8.0,  start=0.0, stop=350.0, flags=accurate+flush
seek, name=Fast-forward-seek,  playback-time=310.0, rate=16.0,  start=310.0, flags=accurate+flush
seek, name=Fast-backward-seek, playback-time=390.0, rate=-16.0, start=0.0, stop=390.0, flags=accurate+flush
seek, name=Fast-forward-seek,  playback-time=310.0, rate=32.0,  start=310.0, flags=accurate+flush
seek, name=Fast-backward-seek, playback-time=470.0, rate=-32.0, start=310.0, stop=470.0, flags=accurate+flush