VFR video

[ccardoso]

Hello,
I'm trying to compress a video and VirtualDubMod tells me it MAY be VFR and so to use another tool to encode it. I don't know if it's VFR or not... how can I know that?
Anyway I encoded another VFR video in the past with virtual dub and I didn't notice any gap between the audio and the video or any sort of problems, so what kind of problems can give encoding a VFR video with VirtualDubMod?
I looked for past threads about VFR video, but I found only that VirtualDubMod can't handle correctly this type of video.

[ChronoCross]

Well if I remember reading some of the tuts correctly if your using mkv with vfr as long as you don't change the frames in the encode(aka the number is the same you don't add or subtract frames) you can just encode it to a different format and do filtering then simply remux it into mkv with the timecodes file. but you have to have the timecodes file of be able to make it else recompressing will cause audio skew that you won't be able to fix with standard cfr measures like audio delay.

[ccardoso]

Well if I remember reading some of the tuts correctly if your using mkv with vfr as long as you don't change the frames in the encode(aka the number is the same you don't add or subtract frames) you can just encode it to a different format and do filtering then simply remux it into mkv with the timecodes file. but you have to have the timecodes file of be able to make it else recompressing will cause audio skew that you won't be able to fix with standard cfr measures like audio delay.
The timecodes file is a text file in which there is the number of frames per each second of the video? Anyway I noticed that mkvtoolnik tells that the video is vfw compatible, so I don't think it can be vfr, right?

[stephanV]

it can be vfr. VFW has nothing to do with that.

[bond]

moved