RMVB To DVD Error

[envoyxp]

I was trying to convert an rmvb file to dvd. I installed avisynth 2.58, real alternative 1.90, and virtual dub mod 1.5.10. I created an avs file with this code: DirectShowSource("%f", fps=23, convertfps=true) because the video's fps was 23 and saved it as the same name as the file in the same location. But when I open it with virtual dub mod I get this error: (yellow bubble) Couldn't locate decompressor for format 'YV12' (unknown). VirtualDub requires a Video for Windows (VFW) compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Player, are not suitable. Only 'Direct stream copy' is available for this video. I tried the same with tmpgenc dvd author 3 I get this error: Could not open the video part of the file D:\%f.avs. Only the audio part can be opened. Can someone help me out with this problem? Thank You.

[Bjs]

https://forum.videohelp.com/topic284288.html
https://forum.videohelp.com/topic289872.html

DirectShowSource("%f", fps=23, convertfps=true) = missing source and location

Example

DirectShowSource("c:\video.rmvb", fps=25, convertfps=true)

[envoyxp]

Okay, now I got that problem to be fixed by installing the K-Lite Mega Codec and when I said "%f" I meant the location of the file and its extension. But now I got another problem. After the conversion and I play the vob file, the sound and the video are not synchronized. Does anyone know how to solve this problem without converting the video and the audio separately? The rmvb file is played in 23fps so I used DirectShowSource("C:\LOTR.rmvb", fps=23, convertfps=true) in tmpgenc.