It seems that *.flm (filmstrips files from Adobe Premiere can be exported to other multimedia files like AVI or similar. This can be done in either Adobe Premiere itself or some kind of other video editing software with Premiere support like the VirtualDub.
Convert Adobe Premiere filmstrip file to Audio Video Interleave movie.
We found 3 software records in the database related to .flm to .avi file format conversion.
Microsoft Windows software - convert flm to avi on Windows
A timeline-based video editing software from Adobe
Convert from flm file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned flm to avi. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A free program for video capture and processing for Windows
Apple macOS / Mac OS X software - convert flm to avi on OS X
Mac version of Adobe's prime video editing software