WebEx Player can export its own saved recorded meetins (*.wot) to a MPEG-4 format. However, it is likely that you were looking for a way how you could export your World of Tanks (WoT) recording to a MP4. In this case please refer to the WOTREPLAY to MP4 conversion.
Convert WebEx saved meeting movie file to MPEG-4 video file format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert wot to mp4 on Windows
Multi-media player for WebEx formats
Convert from wot file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.