Smplayer не делает превью из видео

The following error has occurred while creating the thumbnails:
The length of the video is 0

Debug: PlayerID::Player: player_bin: "/usr/local/bin/mpv" filename: "mpv" 
Debug: VideoPreview::getInfo: 'Playing: /home/constantin/Desktop/35. Working on the Graph Editor Part 1.mkv'
Debug: VideoPreview::getInfo: '(+) Video --vid=1 (*) (h264)'
Debug: VideoPreview::getInfo: '(+) Audio --aid=1 (*) (aac)'
Debug: VideoPreview::getInfo: 'AO: [null] 22050Hz mono 1ch floatp'
Debug: VideoPreview::getInfo: 'VO: [null] 1920x1080 yuv420p'
Debug: VideoPreview::getInfo: 'ID_LENGTH='
Debug: VideoPreview::getInfo: tag: 'LENGTH', value: ''
Debug: VideoPreview::getInfo: 'ID_VIDEO_WIDTH=1920'
Debug: VideoPreview::getInfo: tag: 'VIDEO_WIDTH', value: '1920'
Debug: VideoPreview::getInfo: 'ID_VIDEO_HEIGHT=1080'
Debug: VideoPreview::getInfo: tag: 'VIDEO_HEIGHT', value: '1080'
Debug: VideoPreview::getInfo: 'ID_VIDEO_FPS=0.000000'
Debug: VideoPreview::getInfo: tag: 'VIDEO_FPS', value: '0.000000'
Debug: VideoPreview::getInfo: 'ID_VIDEO_ASPECT=1.777778'
Debug: VideoPreview::getInfo: tag: 'VIDEO_ASPECT', value: '1.777778'
Debug: VideoPreview::getInfo: 'ID_VIDEO_BITRATE='
Debug: VideoPreview::getInfo: tag: 'VIDEO_BITRATE', value: ''
Debug: VideoPreview::getInfo: 'ID_AUDIO_BITRATE='
Debug: VideoPreview::getInfo: tag: 'AUDIO_BITRATE', value: ''
Debug: VideoPreview::getInfo: 'ID_AUDIO_RATE=0'
Debug: VideoPreview::getInfo: tag: 'AUDIO_RATE', value: '0'
Debug: VideoPreview::getInfo: 'ID_VIDEO_FORMAT=h264'
Debug: VideoPreview::getInfo: tag: 'VIDEO_FORMAT', value: 'h264'
Debug: VideoPreview::getInfo: ''
Debug: VideoPreview::getInfo: ''
Debug: VideoPreview::getInfo: 'Exiting... (End of file)'
Debug: VideoPreview::getInfo: filename: '35. Working on the Graph Editor Part 1.mkv'
Debug: VideoPreview::getInfo: resolution: '1920 x 1080'
Debug: VideoPreview::getInfo: length: '0'
Debug: VideoPreview::getInfo: size: '671697744'
Debug: VideoPreview::cleanDir: removing directory '/tmp/smplayer_preview'