关于gmplayer播放mkv格式的问题

xiawuming

直接在命令行下输入gmplayer *.mkv提示
Playing /home/jiangqida/download/s08/8x10 - Monica's Boots.mkv.
LMLM4 Stream Format not found
TiVo file format detected.
MPEG: No audio stream found -> no sound.
MPEG: FATAL: EOF while searching for sequence header.
Video: Cannot read properties.
No stream found.
但是通过双击图标运行gmplayer后选择mkv文件又可以播放
怎么回事?