[MPlayer-users] accurate VBR info, and more ... with midentify ?

[Juri Mianovich]

--- Nico Sabbi <Nicola.Sabbi at poste.it> wrote:


> > So the 19000.0 kbps is just the wrong number I get
> out
> > of midentify ... but I wonder, where does that
> 19000.0
> > kbps come from ?
> 
> from meaningless headers in the video bitstream


Ok - understood.


> > Finally, why does midentify show:
> > 
> > ID_LENGTH=2573.38
> 
> extrapolated => totally invented
> 
> > 
> > but your command shows:
> > 
> > 2672.019 secs
> > 
> > Why two different lengths ?
> > 
> > Thanks.
> > 
> 
> the latter one is real



Ok - so the two problems with midentify (that I see,
at least) are time and video bitrate.

Are these two problems only going to show up for VBR
clips, or should I expect incorrect numbers for
constant bitrate MPEG, etc. ?

Also, are the numbers for audio bitrate, etc., also
possibly wrong in midentify, and if they are, will
your mencoder line always show accurate audio info as
well ?

Many thanks for all of your help.


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