Sadly, there is currently no way how to convert DASH (Dynamic Adaptive Streaming over HTTP) files to the original, or any other video format, including RV (RealVideo) so dash to rv conversion is unlikely.
At best, you will be able to playback it using media player, however without audio track which is not included in .dash file.
DASH files are generally meant for watching purposes only (on Youtube for example) and not meant for downloading directly. Try to download the video in other format.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.