Quality Definitions
Size thresholds for each quality level — the minimum, preferred, and maximum file sizes per minute of runtime that Luminarr considers acceptable for a given quality tier.
What are Quality Definitions?
Quality Definitions let you filter out releases that are implausibly small (likely a fake, a broken encode, or a scene release padded with junk) or implausibly large (remux stored as a ZIP archive, bloated encodes) for a given quality tier.
The check is normalized per minute of runtime so that a 90-minute film and a 180-minute film are evaluated on the same scale. Luminarr uses the movie's TMDB runtime to calculate expected total size from the per-minute thresholds.
Definitions apply globally. Quality Definitions are not per-profile — they are a global table shared across all profiles and all movies. If you tighten the minimum for 1080p Bluray, it applies everywhere that quality tier is used.
Min size
Releases smaller than this (MB per minute) are rejected. Catches fakes, low-quality re-encodes, and corrupt files masquerading as good quality.
Preferred size
The ideal file size. When comparing multiple valid releases, Luminarr prefers releases nearest to this target. Set to 0 to disable preferred-size preference.
Max size
Releases larger than this (MB per minute) are rejected. Catches bloated encodes, remux files mis-tagged as compressed, and accidental junk content.
Editing Definitions
Navigate to Settings → Quality Definitions. Each quality tier has its own row with editable Min, Preferred, and Max fields (all in MB/min). Changes take effect immediately for the next RSS sync or manual search.
Max size of 0 means unlimited. Setting Max to 0 removes the upper bound check for that quality tier. This is appropriate for Remux tiers where file sizes vary widely and there is no meaningful ceiling.
Default Definitions
These are the out-of-the-box values. Sizes are in MB per minute of runtime. Adjust them based on your personal quality preferences and storage constraints.
| Quality | Min (MB/min) | Preferred (MB/min) | Max (MB/min) |
|---|---|---|---|
| SD DVD | 2 | 5 | 10 |
| HDTV 720p | 3 | 7 | 15 |
| HDTV 1080p | 5 | 10 | 22 |
| WebRip 720p | 4 | 8 | 16 |
| WebRip 1080p | 6 | 12 | 25 |
| WebDL 720p | 5 | 10 | 20 |
| WebDL 1080p | 7 | 15 | 30 |
| WebDL 2160p | 15 | 35 | 70 |
| Bluray 720p | 6 | 12 | 22 |
| Bluray 1080p | 8 | 18 | 40 |
| Bluray 2160p | 20 | 50 | 100 |
| 1080p Remux | 25 | 60 | 0 |
| 2160p Remux | 50 | 120 | 0 |
| CAM / Unknown | 0 | 0 | 0 |
Max of 0 means no upper bound. CAM and Unknown tiers have all values at 0, meaning no size filtering is applied — they are accepted at any size if the profile allows them.
How Size Calculation Works
When Luminarr evaluates a release from an indexer, the size reported in the feed is divided by the movie's TMDB runtime in minutes to get an MB/min figure. That figure is then compared against the Min and Max thresholds for the release's quality tier.
For example: a 1080p Bluray release reported as 9,000 MB for a 120-minute film works out to 75 MB/min. With default definitions (max 40 MB/min for Bluray 1080p) this release would be rejected as oversized.
Unknown runtime. If TMDB has no runtime for a movie, Luminarr cannot perform the size check and will skip it. The release will be accepted based purely on quality and custom format criteria. Set a reasonable max in the definition to guard against this edge case for large remux tiers.
Preferred size and release selection
When multiple valid releases exist for the same movie at the same quality tier, Luminarr uses the preferred size as a tiebreaker — the release whose MB/min is closest to the preferred value is ranked first. This only matters during interactive manual searches; RSS sync grabs the first valid release it encounters.