Convert PDM to MP4

Converting PDM files to MPEG-4 Videos (.pdm to .mp4 conversion) most likely relates to users attempting to export/convert multimedia data to MPEG-4 Video format. 

There are several existing file types using the PDM suffix. It is therefore quite challenging to provide specific details on such conversions. Apart from that, we are not aware of any possible way to directly convert PDM to MP4.

Simply put, it is impossible to convert PDM to MP4 directly.
Thus, there is no so-called pdm to mp4 converter or a free online .pdm to .mp4 converter to be found.