Referred to by Adobe as "content debuggers", these function as standalone desktop Flash players. The installers can be downloaded at the link below.
https://www.adobe.com/support/flashplayer/debug_downloads.html
You can use the capture utility in the Windows gaming overlay (Win+G) to record playback of the SWF file, although this does not work with all graphics hardware. Contact systems support if you need assistance in converting legacy Flash video content.