Vfr ?

[wyti]

Hello i've often seen the term "VFR" in this forum, but i never understand what is it exactly.
Can someone explain me that ?
thanks

[Ranguvar]

Variable frame-rate. Supported by only a few containers (MKV, MP4, ASF/WMV, not sure about OGM). Usually done with timecodes embedded into the container that tell it how long to play each frame.

BTW, nice Einstein quote.

[wyti]

BTW, nice Einstein quote.Thanks.
And thx for the VFR too

[fields_g]

I know certain anime has a lot of VFR. I ran into it when trying to convert my Star Trek: TNG DVDs. The natural footage was done with film (progressive 23.976fps) while CG was done NTSC (interlaced 29.97). I know there are other scifi tv shows that are similar.

At first I actually preserved the VFR and put it into MKV, but it was a pain and I still haven't seen a decent tool for MP4. now I just convert it at to film (most content for me was film anyway). Another way of dealing with it is converting all footage to 120fps.

[kemuri-_9]

for doing vfr in mp4 there's
http://forum.doom9.org/showthread.php?t=112199

[Ranguvar]

A lot of concert DVDs seem to be that, telecined film and interlaced NTSC. Annoying enough to just get it looking good, then you have to either convert the FPS of the film or the video... or use VFR.

And then, of course you have anime, which seems to have regular contests for who can make the most screwed up transfer xD
I've never seen such creative ways to use interlacing, telecining, blending, speedup/slowdown, etc. etc...

[Comatose]

LOL, so true!