[gknot] is it possible to adjust output FPS?

[tonemgub]

howdy,

is it possible to use gordian knot to adjust a file's framerate?

i have a ripped PAL DVD on my hard drive, of which i want to convert a single chapter to an avi using xvid. i already tried converting that chapter using a reduced bitrate and resolution but the video still plays back at 25 FPS, which is overkill considering there isn't much motion in this particular DVD (it's a stand-up comedy act).

i want to drop it down to 15 FPS, using gordian knot or any of its bundled apps if possible.

i haven't found anything in my searches that didn't pertain to conversion for mobile devices, but those guides always involved proprietary software...there has to be a way to do this with virtualdub or something.

any tips?

thanks

[redwudz]

Sure. VirtualDub will do a framerate conversion. I don't know how it will play, but you can try it. Look under 'Video>Framerate.' I would try a short encode before you commit yourself.

[celtic_druid]

You could crank up XviD's frame drop ratio. By default it is set to 0 which means it drops a frame only if it is 100% identical to the previous. Crank it up and it will drop more frames. It will still be 25fps, just with a lot of N-VOP's. When the decoder encounters an N-VOP, it simply repeats the previous frame.

[manono]

It's not too bright an idea if you ask me, but it's easily enough accomplished by editing the .avs that GKnot generates for you.

Load the Decomb Plugin by removing the "#" from in front of it. Then at the bottom of the .avs add this:

Decimate(5).Decimate(4).

And that will convert your 25fps AVI to 15fps, removing 40% of the frames and keeping it the same length so the audio doesn't have to be altered.

[tonemgub]

thanks all