[MEncoder-users] mplayer / mencoder: precision of -ss

[Phil Ehrens]

Reza Roboubi wrote:
> When I use the mplayer "pause" key, it stops exactly where
> I want it; bang-on.  Then I record the number of seconds that
> it has printed.  Then I use something like
> 
> mencoder -ss 30.0 -endpos 10 -ovc copy -oac copy -o segment.dump stream.dump
> 
> When I play back the stream, it's not exactly what I wanted.  In fact it 
> seems
> a good number of seconds (maybe 6) off.
> 
> How do you correct that?

You don't. You can't seek to an arbitrary frame, you have to seek to an
iframe and creep stealthily up on those skittish pframes. When you go
hunting in the land of gops, you have to follow the lead of the locals.