Audio Video Interleave (AVI) interleaves audio and video streams in a Microsoft container format that supports many codecs but lacks modern streaming features. NSV file (NSV) stores data in the NSV format. This conversion changes the file's encoding, compression method, and supported feature set. Metadata such as creation date and embedded colour profiles is preserved where the target format supports it. The result is a standard NSV file readable by any compatible application. 1converter handles AVI-to-NSV conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.