AudioTrack, VideoTrack, SubtitleTrack and MediaInfo are snapshots of a
single ffprobe run — model them as proper immutable value objects.
- @dataclass(frozen=True) on all four
- MediaInfo track collections become tuple[...] instead of list[...]
- ffprobe adapter rewritten to build tuples up-front instead of
appending/setattr'ing on a constructed instance
francwa
7cd24f3a31