[MPlayer-users] Precise seeking / video cutting

Saurabh Singhvi saurabhsinghvi at gmail.com
Tue Apr 10 06:31:20 CEST 2007


Hi,

IIRC, there is an option (you'll have to do man mplayer) which
allows for exact frame usage. I think if you search for exact in
the man page, you should probably find it.

sorry that I don't remember the exact option.

cheers
Saurabh

On 4/10/07, Sam Wong <sam at hellosam.net> wrote:
>
> I am trying to use -ss and -endpos to extract a section of video. But it
> looks like -ss will only seek to the keyframes?
>
> I was thinking if it's possible to seek to the nearest eariler keyframe
> and
> start decoding from there, and start encoding only at the point I want to.
> I
> thought -hr-edl-seek is the magicword for that but the reality condicts to
> my belief =P.
>
> So my question is: Any way to do accurate -ss seek like `transcode'? (But
> I
> need the wide codec support of mplayer and does mind decoding from the
> very
> beginning of the movie)
>
> I know that probably requires some coding if it's not already implemented.
>
> I have thought a workaround, is to first encode the section of video into
> some more native format that has I-Frame everywhere, pipe to another
> mencoder and use -ss and -endpos again to get a accurate cut.  However,
> this
> works only if -ss give me what exact time point it has seeked to...and I
> have trouble to get this piece of information.
>
> My second questios is: Is there any switch so that I could know where -ss
> has actually seeked to?
>
> Thanks a lot,
> Sam
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