When editing M3U `#EXTINF` metadata, treat `tvg-id` (and related fields) as a canonical identifier: it must be valid, correctly aligned with the displayed channel name, and consistent across variants. Apply these rules: - **Match identity:** `tvg-id` must correspond to the same channel as the human-readable name; don’t use unrelated or “unknown” ids. - **Match scope:** don’t use **city/local call signs** for streams that are **national** (and vice versa). - **Use canonical spelling/format:** keep `tvg-id` stable across entries (e.g., don’t mix `MeTV+` naming into different id spellings). - **Avoid invalid/malformed attributes:** keep `tvg-id` simple and well-formed; don’t invent extra, conflicting attributes. - **Handle variants intentionally:** if a stream is truly an alternative/different feed, don’t reuse the same canonical `tvg-id` incorrectly—use the correct canonical id (or place it in the appropriate list). - **Reflect known constraints consistently:** if a channel is geo-blocked, include the standardized tag (e.g., `[Geo-blocked]`) in the name. Example (showing the intended shape): ```m3u #EXTINF:-1 tvg-id="MeTVPlus.us",MeTV+ (720p) https://example.com/metvplus/index.m3u8 ``` If you can’t confirm the canonical `tvg-id` for the exact channel (or its scope), omit the entry’s misleading identifier or use the correct one rather than guessing.