The only way to work with .imoviemobile files would be to open them using the original iMovie. Once done, you should be able to export the project and save it to any of the available formats, perhaps including some of the MPEG based formats, such as .mts files. If that format is not supported for you, you will have to use some video converter to get your MTS files from the video you get.
Convert iMovie project package to AVCHD MPEG-2 transport stream.
We have found one software suitable in our database for this conversion.
Apple macOS / Mac OS X software - convert imoviemobile to mts on OS X
A proprietary video editor for Mac OS X and iOS
Convert from imoviemobile file format
|Yes, iMovie supports mts file conversion as a target file type.||Yes||Yes||mts editor||Yes||No||No||No|
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.