jellyplex-gen 0.1.1

Generate plausible test media libraries in Plex or Jellyfin format

jellyplex-gen

Generate plausible test media libraries in Plex or Jellyfin format.

A sibling project to jellyplex-sync: where jellyplex-sync converts between media library formats, jellyplex-gen produces realistic-looking source material to test it (or anything else that operates on Plex/Jellyfin libraries) against.

Generated libraries consist of placeholder files (0-byte by default, or pseudorandom bytes up to a configurable per-file maximum) arranged according to the chosen format's naming conventions. A format-neutral JSON manifest is written alongside, describing the logical content of the library.

Status

Early. Plex format only, flat hierarchy, single resolution variant per movie. Designed so other formats and structures can be added without touching the existing code paths.

Quick start

uv run jellyplex-gen plex --seed=hello --movies=50 --out=./testlib

The same --seed always produces the same library. Seeds are arbitrary alphanumeric strings — they get hashed to an integer internally, so reproducibility doesn't depend on Python's PYTHONHASHSEED.

To get just the manifest (no files written):

uv run jellyplex-gen manifest --seed=hello --movies=50

For copy-semantics or content-aware testing, fill files with up to N bytes of pseudorandom content (default is 0, i.e. empty files):

uv run jellyplex-gen plex --seed=hello --movies=20 --max-content-size=4096 --out=./testlib

File contents are seeded per-file from the manifest seed and the file's relative path, so the same --seed + same --max-content-size always yield byte-identical libraries.

Architecture

The generator is built around three swappable abstractions:

• TitleSource — supplies movie titles. The default CuratedTitleSource mixes word pools and hand-crafted titles. The protocol leaves room for other sources without touching anything else.
• NamingConvention — format-specific: turns a logical movie into directory and file names. Currently only PlexNamingConvention.
• LibraryStructure — orthogonal to format: decides the parent path of each movie directory. Currently only FlatLibraryStructure.

Generation is two-phase: build_manifest() produces a format-neutral description, materialize() writes the actual filesystem layout. The manifest can be saved, loaded, and diffed independently of any concrete layout.

License

BSD-3-Clause. See LICENSE.