[MPlayer-users] avi to vcd frame rate problems

[emaillist+mpu at dogphilosophy.net]

Perhaps this ought to be a FAQ if it's not already?  (I don't 
recall seeing it...).  Perhaps in the 'encoding' section?

mencoder has a really simple and spiffy way of doing this:

mencoder -ofps 25.000 -oac copy -ovc copy -o new_frame_rate.avi 
old_framerate.avi

Then use new_frame_rate.avi as the input for generating the mpeg1 file.

Quite honestly, this frame rate conversion feature is one of the spiffiest
tricks I've run into in mplayer/mencoder, especially considering nobody
else seems to do it at the moment (transcode/ffmpeg/etc.)

FEATURE REQUEST - Any chance of getting the -ofps feature implemented
in mplayer?  That's save the 'transcode' step, and mencvcd (or home-brew
scripts) could generate NTSC/NTSC FILM/PAL VCD/SVCD correctly from any input
with a combination of -ofps and -vop scale...

On Friday 04 October 2002 10:16 am, Oskar Andreasson wrote:
> This is a quick shot, but I am hoping for some help with a conversion. I
> want to convert a AVI file with a FPS at 12.500 into a MPEG1 file
> running at 25.000 (PAL?) FPS.
>
> To put it simple, so far my success has been quite hilarious (double
> speed, anyone?):). Is there any way of simply "for each frame in input,
> output frame twice" kind of function anywhere, or that will take one
> FPS on the input and output another FPS, but without changing the player
> speed?
>
> Huge thanks for any kind of reply!