There is no way how you could actually convert MP4, or any of the video as ISO disk image. However, you can burn .mp4 much like any other files as part of burning compilation. This can be done using any burning software, but it's not actually mp4 to iso conversion in proper sense.
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.