FFmpeg is the most trusted open-source engine for recording, converting, and streaming audio and video. But when tied to a data backend—whether for metadata, user permissions, or on-demand video feeds—it inherits every security weakness of that backend. If your application indexes streams or clips with sensitive attributes, then without row-level security (RLS), FFmpeg can become a silent vector for exposure.
Row-level security limits data visibility to only the rows a user is entitled to see. This means a SELECT query triggered by FFmpeg’s I/O routines will return only what the caller can access. Implementing RLS correctly requires rules defined at the database layer—PostgreSQL’s CREATE POLICY and ALTER TABLE ... ENABLE ROW LEVEL SECURITY are common starting points. Your FFmpeg worker processes must connect using credentials aligned with those policies.
When FFmpeg retrieves playlists, segment lists, or metadata indexes, the database should filter out rows tied to other users’ permissions or roles. This eliminates accidental leakage via API endpoints and CLI utilities. For stream authentication, combine RLS with session-based access tokens. FFmpeg’s -headers option can pass tokens downstream, so the server enforces row policies before returning data.