[MPlayer-users] How to get the duration(ID_LENGTH) of a Sony MTS video file use "mplayer"?

[Nico Sabbi]

littlebat ha scritto:
> I don't know the technique detail of how to get the duration of a 
> video file. But, if I need a universal method using mplayer to get the 
> duration of a video, I need extra parameter "-demuxer lavf" to get it 
> for a mpegts file. I found "mediainfo" and "ffmpeg" can get the 
> duration of a mpegts file in a universal way. Why can't adopt these 
> estimated ways in mplayer?

I'd be afraid to read how ffmpeg and mediainfo try to guess the duration.
Short answer: guessing is always the highway to hell.