[MPlayer-users] -ss option time descrepancy
inverseparadox at comcast.net
Tue Sep 14 16:23:24 CEST 2004
D Richard Felker III wrote:
> On Mon, Sep 13, 2004 at 01:39:58PM +0200, Michel Bardiaux wrote:
>> If one assumes an MPEG-PS format with correct timestamps, correct
>> seeking to a particulat frame using repeated bisection then a
>> little bit of MxV parsing should work, no? Of course the problem is
>> then to *decode* non-key frames, especially when faced with
>> variable GOP size or open GOPs...
>> So ITYM 'seeking in a pathological MPEG'?
> if you call 75% of all dvd's "pathological", then yes...
...plus apparently every single .mpg file I've ever found on the
Internet, and certainly every one for which I've noticed one way or the
other; I don't remember ever doing -ss in an MPEG file and having it go
to the requested time offset. (Admittedly part of this could be just bad
memory and/or lack of observation... but there have been enough specific
cases that I'd be quite willing to believe the problem is present with
all of them.)
Warning: Simply because I argue an issue does not mean I agree with any
side of it.
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