Every score aggregates ratings from multiple independent technical reviewers, not a single opinion. Different scoring scales (stars, letter grades, percentages) are normalised to a single 0–10 number so you can compare any disc at a glance.

Every disc carries a confidence score from 0–100 reflecting how many reviewers have covered it. A disc scored by 4–6 sources carries a much stronger verdict than one with 2. We show this transparently rather than hiding low-coverage entries.

We don't care how good the movie is, only how good the disc looks. Every entry is evaluated purely on transfer quality and HDR presentation. A great film on a poor disc won't make the cut.

Tracking 4K discs actively being reviewed by the community, backfilling over time as older titles accumulate enough coverage. Film age is irrelevant: a 1969 restoration getting attention today is as eligible as a 2025 release. If the community is evaluating it right now, it belongs here.

Scores are drawn from six trusted technical review sources: Blu-ray.com, High-Def Digest, DoBlu.com, The Digital Bits, Blu-Ray Authority, AVSForum. A disc requires Blu-ray.com plus at least one independent source before it is published.

Every source uses a different scale. We convert all ratings to a 0–10 baseline: stars ×2, letter grades mapped (A+=9.5 down to C+=6.5), percentages ÷10. Scores are then averaged across all available sources. A +0.2 DI bonus is applied when the 4K master is independently confirmed as native resolution.

Reference ≥ 9.5	Gold standard. Demo-worthy transfers the enthusiast community regards as the best the format offers.
Excellent ≥ 9.0	Exceptional transfer. Buy with full confidence.
Recommended ≥ 8.0	Good transfer, worth owning. No meaningful reservations.
Notable ≥ 7.0	Competent transfer. Hidden by default, accessible via filter.
Below Threshold	Does not publish. Tracked internally only.

Consensus measures reviewer agreement via standard deviation of normalised scores: Strong Consensus (SD ≤ 0.5, 4+ sources) → Consensus → Soft Consensus → Disputed → Contested (SD > 1.5). Confidence measures coverage: how many of the possible sources have reviewed the disc. Both are shown independently because a high-confidence disputed score tells a different story than a provisional consensus one.

When a disc has a matching IMDb ID in the streaming database, a Streaming Comparison panel appears in the expanded detail view. Data is sourced from two tables: movie_streams (per-service HDR format, audio format, bitrate and peak nits) and a fallback to the main movies table (Dolby Vision, Atmos, HDR10+, bitrate, MaxCLL and MaxFALL) when per-service data is not yet available. Fallback entries are marked "basic data" in the section label.

Each streaming service is assigned a verdict based on the following hierarchy, evaluated in order:

Suspected HDR	Title is flagged as suspected tone-mapped HDR in the streaming database. Treat with caution regardless of other format claims.
Strong stream	Dolby Vision + Atmos confirmed, bitrate ≥ 15 Mbps. Best available streaming presentation.
Good stream	Dolby Vision + Atmos confirmed. Solid streaming presentation, bitrate below 15 Mbps threshold.
DV · No Atmos	Dolby Vision present but Atmos not confirmed on this service.
HDR10+ only	HDR10+ with Atmos but no Dolby Vision on this service.
Missing DV	HDR10 with Atmos but no Dolby Vision. Disc DV grade not replicated on this service.
SDR only	No HDR format detected. Significantly below disc quality on any HDR-capable display.
Limited quality	Partial data available. Verdict may be updated as coverage improves.

Audio score weighting into the final reference score · Below Threshold and Under Evaluation views for discs outside the main list · CriterionForum as a source for boutique and Criterion releases · Full score breakdown panel showing every normalised source score · Personal collection tracking — log your owned discs and see transfer scores across your library · Disc vs Stream coverage expansion as IMDb ID matching grows.