Is there a way to save avi with exact frame rate?

[Lixorer]

So that to know that it will be 20.25100 and not for example 20.25111

[reboot]

Virtualdub doesn't change framerate, unless you want it to.
Why are eleven onehundred thousandths of a frame that important?

[Lixorer]

I have encoded two parts of a file with the same presets in VD but can't join them in VD because of that difference in the frame rate.

[reboot]

What is the exact error message?
VD doesn't usually crap out on framerate as much as video size or format. There may be some other difference you haven't found yet.

[Lixorer]

Here is the error message:

Cannot append segment "C:\file.avi": The video streams have different sampling rates (20.25111 vs. 20.25100)

Both files were encoded using VP6 Video Codec.
Every time I save the file, two last digits in frame rate are different, and VD doesn't allow to indicate exact frame rate.

[reboot]

Try saving with a different codec. Never had that problem with huffyuv, divx, xvid, nor Canopus DV.

Edit: You have "encoded" two parts (of a movie I'm assuming).
You are now trying to join them in vdub.
What format are the source videos?
Why did you not join them during the first encode?
Why encode in vdub twice?
What is your end result supposed to be, (S)VCD, DVD, ???
Why not let your authoring program or mpeg encoder join them?

[Lixorer]

Thank you for your help!

The format of the source video is RM.
I encoded in avi only once. The first part I decoded in uncompressed avi and then encoded it. The second (larger) part I had to encode simultaneously with decoding (I have no place for an uncompressed avi).
I just want to get a well compressed avi and not to lose quality. Quality of the source video was not high.
I liked VP6 Video Codec, seems that it's better than DivX, though I'm a beginner and can make a mistake.

I took a little part from both files and uncompressed. They were joined alright. If compressed with DivX they join also.

[Lixorer]

I've changed the frame rate so that both files are 20.25100. I used AVIUtl.

[reboot]

Whatever works.
Virtualdub could also have changed your framerate for you, without using yet another program and another encode.
Click Video, Framerate, and adjust the settings as you like.
Seems that VP6 is the problem, and if you use DivX 4 Low Motion, then configure it to output the file at it's highest bitrate (6000kbps), you get a slightly larger file, but you also maintain most quality, and it's nowhere near the full uncompressed size.
If you are using EOVideo to rip the RM's, just use the same codec during the ripping on both parts.
If you are going to make an (S)VCD or DVD from this, then don't join the files in vdub, just join them in your authoring, or encoding (to mpeg) program, and save as much quality as you can.
If necessary, you can join them in virtualdub and frameserve to the encoder.

[Lixorer]

Thank you once again.
I didn't encode in AVIUtl, I just changed the frame rate.
I did try to do everything in VD, but despite my indicating to change the frame rate to 20.25100, two last digits every time were different for example 20.25123 or 20.25167. You may try to experiment with the same software as mine and see the results.