[MPlayer-users] segfault while trying to telecine

mplayer at interlinx.bc.ca mplayer at interlinx.bc.ca
Sun Mar 2 05:26:54 CET 2003

On Sat, Mar 01, 2003 at 08:32:53PM -0500, D Richard Felker III wrote:
> Right. If you had RTFM'd, you would have seen that you also have to
> use -fps 29.97.

Wow.  You are right.  I should have RTFM'd.  I guess I am just always
so used to documentation being so behind development in other
projects, especially the bleeding edge, that I just assumed it would
not be documented yet.

> However, I'm not sure if this is even possible with
> variable-fps formats like quicktime...

Seems to work alright, as far as A/V sync goes.  I still have the
problem where only the left half of the picture is getting telecined.
The right half seems to be remaining progressive albeit with a
duplicate frame being added due to the 20% framerate increase.

> You might have to put the movie
> in an avi container first with -ovc copy -oac copy, then do the
> telecine.

Wasn't necessary.

> This is all pretty much of a hack until mplayer/mencoder actually has
> proper support for changing fps in the filter layer...

Understood.  Would be nice to get that working.  I would so much
prefer to telecine on the run rather than decreasing quality bandwidth
by 20% (or increasing filesize for the 20%) just to get it up to NTSC

I would imagine during initialization of the vo and each of the vf's
the fps needs to be passed down during config/init to allow each
component to make it's adjustments to it before it's passed back up to
the main processing block.  So vf_telecine would gross it up 20% and
then the main block would know to process at 29.97fps rather than the
24 specified in the file.  I am sure it's more complicated in the
details than I make it out however.  :-)


Brian J. Murrell
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