Read and display all metadata tags
// what it does
Dumps the container-level metadata tags — things like title, artist, encoder, and creation_time — using `-show_entries format_tags`. `-of default=noprint_wrappers=1` strips the surrounding `[FORMAT]`/`[/FORMAT]` section markers, leaving one `TAG:key=value` line per tag, and `-v error` keeps the log noise out. Use it to audit what identifying or timestamp metadata is baked into a file before publishing or sharing it.
// shell
$ ffprobe -v error -show_entries format_tags -of default=noprint_wrappers=1 input.mp4// gotcha
Each line is prefixed with `TAG:` (e.g. `TAG:title=...`), not a bare key. This also shows only container-level tags; per-stream tags such as an audio track's `language` live under stream_tags and won't appear here. Tag support is container-specific too — MP4 only stores a limited set of atoms, so arbitrary keys can be dropped or renamed.