InqScribe cannot play Flash (.flv) movies directly because it relies on QuickTime and QuickTime does not play .flv movies.
However, it is relatively easy to convert .flv movies to a format that InqScribe can recognize (such as .mp4) using free widely available tools.
Handbrake is a free conversion application that can convert from .flv to .mp4. It can also convert DVDs and can even handle batch conversions if you have many files. For more on Handbrake and other media conversion tools, check out the following article from our InqScribe blog: https://blogs.inquirium.net/inqscribe/2014/10/media-conversion-tools/