It appears that StreamPix software for security cameras allows users to convert captured sequences (.seq) to common AVI video format or alternatively Quicktime MOV format. As far as we know, this is the only viable way how to handle this particular seq to avi video conversion.
Convert Norpix StreamPix video sequence to Audio Video Interleave movie.
We found one software available in the database for this conversion.
Microsoft Windows software - convert seq to avi on Windows
A security camera management software
Convert from seq file format
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.