Older freeware installers were notorious for including "bundled software" (toolbars, adware, or browser hijackers). When installing version 2.70, users must be extremely vigilant during the installation wizard. Always choose rather than "Express," and uncheck any boxes offering to install additional browser extensions or system optimizers.
Since you are distributing an old version, consider adding a virus scan report link (e.g., from VirusTotal) to reassure users. Format Factory Old Version 2.70 Free Download
Do not use random "free download" pop-up sites. Start with: Since you are distributing an old version, consider
If you have .RMVB (RealMedia) or .ASF files from the early 2000s, version 2.70 contains older FFmpeg binaries that still read these containers. Modern builds sometimes fail on corrupted headers. Modern builds sometimes fail on corrupted headers
Format Factory 2.70 is an older, lightweight version of the popular multimedia converter known for its broad format support and resource efficiency