The Core Builds Expression Layer is the set of Stream Expressions (SEL) deployed across all active templates. It is what separates Core Builds from a default AIOStreams install.
Expression Types
| Type | Role | Execution order |
|---|
| ESE (Excluded Stream Expression) | Removes streams from results entirely | First |
| ISE (Included Stream Expression) | Pins streams to the top ahead of ranking | Second |
| PSE (Preferred Stream Expression) | Scores and ranks remaining streams | Third |
ESEs — The Kill Stack
Standard templates run 25–26 ESEs depending on template type. Lite templates run 12 (hard kills only — quality gates removed).
Infrastructure ESEs (all templates)
These run first and manage result counts, addon fairness, and platform-specific guards:
| ESE | What it does |
|---|
| Per-Addon Flood Guard | Caps each scraper at its flood limit — Meteor ≤5, Comet RD ≤5, MediaFusion ≤4, EZTV/HdHub ≤3, Knaben/TorrentGalaxy ≤1. Prevents one noisy scraper from flooding the list. |
| Usenet Propagation Guard | Suppresses Usenet NZBs younger than 2 hours when propagated alternatives exist — avoids corrupt early-propagation grabs. |
| AI Upscale Exclusion | Removes AI-upscaled streams from non-library, non-SeaDex results. |
| RD Copyright (per DMM) | Hides Real-Debrid copyright-blocked streams (WEB-DL/WEBRip flagged by RD’s May 2026 filter). |
| Extra Cached / Uncached limit ESEs | Three ESEs that cap how many cached HQ, cached LQ, and uncached streams can appear in the final list. |
| Final Limit (All) | Hard cap on total results after all other ESEs have run. |
Hard Kills (both Standard and Lite)
These always run — they remove streams that are broken, unwatchable, or structurally wrong regardless of library size:
| ESE | What it kills |
|---|
| Hard CAM Kill | Camera recordings, TS (Telesync), TC, SCR |
| Hard External Kill | YouTube rips and all external-type streams |
| Hard Resolution Kill (1080p templates) | 2160p and 1440p — prevents 4K leaking into 1080p-only templates. Does not kill 720p on templates with a 720p fallback tier. |
| Sub-720p Kill | 144p, 240p, 360p resolutions |
| ongoingSeasonPack | On ongoing series, kills season packs when individual episode streams exist |
| Kill Multi-Episode When Singles Exist | Removes multi-episode files on single-episode queries when per-episode streams are available |
| Kill Season Packs When Episodes Exist | Removes full season packs on episode queries when individual episode results are available |
| Kill Ambiguous Packs When Non-Pack Exist | Removes packs with ambiguous season/episode metadata when clean single-episode results exist |
Quality Gates (Standard only)
These run only on standard templates — they can filter legitimate content on thin libraries:
| ESE | What it gates |
|---|
| Low Bitrate (G’s) | Streams with bitrate below the statistical floor for that title |
| Low Seeders | Torrents with fewer than 3 seeders |
| Bad 4K Anime | 4K anime where a better-quality SeaDex result exists |
| Upscaled 4K | AI-upscaled 4K that isn’t native UHD — exempts WEB-DL/WEBRip for theatrical releases without a Blu-ray |
| Bad 4K BluRay | 4K BluRay releases from known low-quality groups |
| Bad 1080p BluRay | 1080p BluRay from low-quality groups when better sources exist |
| Bad NZBs | Malformed, sample, or incomplete Usenet NZBs |
| Extra SeaDex | Hides excess SeaDex results beyond the best when better-ranked alternatives are available |
| Low SEL Score | Removes streams that scored in the bottom tier across all stream expressions |
If the standard template returns very few results, switch to the Lite variant. If Lite returns results, one of the quality gate ESEs is filtering your content — most commonly the bitrate floor or low-seeder kill.
ISEs — Boost Stack
ISEs run after ESEs and before PSEs. Matched streams jump ahead of all ranked results regardless of their PSE score.
| ISE | What it boosts |
|---|
| Library | Streams from your AIOStreams library (continue watching) |
| digitalRelease Bypass | Passes through streams on movie/anime.movie queries to prevent premature ESE filtering on digital release day |
| Cached First | All cached debrid/Usenet streams above uncached |
| REPACK/PROPER Passthrough | Pins REPACK and PROPER releases above the result limit so patched encodes always surface |
PSEs — The IQR Tukey Fence
The flagship Core Builds ranking system. Rather than fixed bitrate cutoffs (which break on thin libraries and new releases), PSEs use live statistics computed from the actual pool of streams returned for each query.
Three-tier adaptive logic
Tier 1 — IQR Tukey fence (≥4 peers)
When 4 or more streams exist for a title, the fence is statistically sound:
size(
bitrate(STREAMS,
q1(values(bitrate(STREAMS,'5Mbps'),'bitrate')) - 1.5 * iqr(values(...)),
q3(values(bitrate(STREAMS,'5Mbps'),'bitrate')) + 1.5 * iqr(values(...))
),
'15GB'
)
[Q1 - 1.5×IQR, Q3 + 1.5×IQR]. Streams inside the fence are ranked; outliers (suspiciously low bitrate or bloated) are skipped by this PSE tier and fall to lower tiers.
Tier 2 — Min/max ±20% (1–3 peers)
On thin results (rare titles, niche content), full IQR isn’t statistically meaningful. The PSE switches to a simpler min/max window:
size(bitrate(STREAMS, min(values(...)) * 0.80, max(values(...)) * 1.20), '15GB')
bitrate(STREAMS,
MEDIAN * (1 - 0.4 * pow(0.95, daysSinceRelease)),
MEDIAN * (1 + 0.4 * pow(0.95, daysSinceRelease))
)
pow() decay explained
pow(0.95, daysSinceRelease) produces smooth exponential decay:
| Day | Tolerance |
|---|
| 0 (release day) | ±40% |
| 7 | ±28% |
| 14 | ±20% |
| 30 | ±9% |
| 60 | ±2% |
| 90+ | ~0% |
Additional PSE tiers
After the IQR quality tiers, three further PSEs run across all templates:
| PSE | What it boosts |
|---|
| Codec Efficiency Booster | Surfaces HEVC/x265 encodes ahead of AVC/x264 at equivalent quality |
| Audio Pinnacle | Promotes lossless and object-based audio: Atmos/TrueHD → DTS-HD MA/DTS:X → EAC3/DD+ |
| HDR/DV Priority | Within 4K results, surfaces DV/HDR10+/HDR10 ahead of SDR |
| Boost Cached Usenet | Catches any cached TorBox Usenet NZBs that slipped outside the IQR window and promotes them above uncached results |
Hybrid TorBox-Priority PSEs
The 4K Hybrid template (and 4K Apex variants) adds a TorBox-cached twin PSE before each IQR tier:
service(
size(bitrate(STREAMS, IQR_LO, IQR_HI), '15GB'),
'torbox'
)
[] and the all-service PSE runs as a fallback. Result: TorBox cache is always preferred over RD/other services when quality is equivalent.
Release Group Scoring
Two systems work together: preferredRegexPatterns for top-tier boosts and regexOverrides for the full scoring ladder.
preferredRegexPatterns
Template-specific patterns with a strong positive boost. Score range: 70–100.
| Template type | Count | Patterns |
|---|
| 4K | 7 | Radarr Remux T1, Sonarr Remux T1, Radarr UHD Bluray T1, Radarr UHD Bluray T1 — DON, Anime BD T1, Anime BD T1 [sam], FraMeSToR |
| 1080p | 5 | Web T1, 126811, FLUX, SiC, BHDStudio |
| Anime | 0 | SeaDex/AnimeTosho handle quality |
regexOverrides
48 inline scoring overrides applied on top of the Vidhin05 synced pattern set (syncedRankedRegexUrls). Vidhin05 provides 174 patterns as a base; the overrides reassign scores for groups Core Builds cares about. Score range: −200 to +100.
| Tier | Score | Examples |
|---|
| S | +100 | FraMeSToR, SURCODE, EPSiLON |
| A | +80 | KRaLiMaRKo, HONE, 126811, FLUX |
| B | +60 | DON, NCmt, BHDStudio |
| Penalised | −50 | Known upscale groups |
| Bad | −75 | Consistently poor encode groups |
| Blacklist | −200 | Scene groups releasing defective content |
SEL Character Limits
AIOStreams enforces hard limits on expression size:
| Limit | Value | Current highest |
|---|
| Max per expression | 3,000 chars | 2,953 chars (Final Limit ESE — 47 headroom) |
| Max total (all expressions) | 50,000 chars | ~35,000 chars |
| Max expression count | 200 | Well under |
Do not grow the Final Limit (All) ESE further — it is already at 2,953 characters. Any addition risks hitting the 3,000 char hard limit and breaking import.
