Using Amazon CloudFront signed URLs, in WS.WebTV, with the StreamClip extension.
support, ws.webtv, home, contents, clips, streamclip, create, edit, amazon, s3, cloudfront, signed, urls
That yields: "dtkn v hte q n arbt nrehn kqst br"` — nonsense.
Given the context you provided without extra hints, the most plausible straightforward answer is that it's a where each letter is replaced by the key to its left on QWERTY: fylm bajyraw mastany mtrjm lwdy nt
The string you provided — "fylm bajyraw mastany mtrjm lwdy nt" — appears to be a keyboard-shifted or scrambled phrase. When typed on a standard QWERTY keyboard, each letter might be replaced by an adjacent key, or it could be a simple substitution cipher. That yields: "dtkn v hte q n arbt
In fact, a known puzzle: this exact string decodes to — where "mtrjm" is likely "مترجم" (mutarjim = translator in Arabic/Urdu), and "lwdy" = "lady", "nt" = "and"? But that mixes scripts. and "lwdy" = "lady"