[MPlayer-users] play or encode only range of frames

[Jakub Argasiński]

Dnia 12/26/2003 07:31 AM, piotr_sobolewski at o2.pl naskrobał(-a) :
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hello,
> 
> I am new on this list. I subscribed it cause I have a question:
> how can I play or encode only a range of frames? Yes, I know I can 
> use -frames option, but I don't know how to start not from frame 0 
> but (for instance) frame 157?

You can use -ss to specify time from where to begin encoding. So I
guess if you know original movie framerate, you can calculate the
right value using formula:

desired_start_frame / fps = desired_start_time

And then use -frames, but I'm afraid it won't be -that- accurate.

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