VHS
Enable an AI agent to recognise a VHS tape cassette, assess its recorded content and physical condition, and decide whether and how it may be played, preserved, transferred or reused.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex
Purpose and description
Enable an AI agent to recognise a VHS tape cassette, assess its recorded content and physical condition, and decide whether and how it may be played, preserved, transferred or reused.
It can be Inspect and document cassette markings and visible tape condition before choosing equipment.; Select a compatible playback configuration, including any required adapter.; Play or wind the tape when its assessed condition supports the operation.; Capture recorded video and audio while logging omissions, interruptions and playback defects.; Apply record protection or perform authorised erasure and reuse after checking preservation obligations.; Route a damaged or contaminated cassette for isolation, specialist assessment or treatment..
Distinguishing features
Check cassette geometry, markings and documented equipment compatibility together to distinguish VHS from Betamax, Video8 and unrelated tape formats; a handwritten VHS label alone is insufficient.
Record whether the cassette has the full-size VHS form or a compact VHS-C form, and treat any required adapter as a separate compatibility dependency.
Distinguish ordinary VHS from S-VHS using cassette identification and evidence about the recording; do not equate the cassette stock designation with the signal actually recorded.
Distinguish the physical cassette from its case, a digital transfer and the work named on its label by inspecting the tape-bearing object itself.
Scope
+ Cassette identity, markings and format variant
+ Tape, housing, reel and protective component condition
+ Recorded signal characteristics and observable recording boundaries
+ Compatibility with specific playback and capture equipment
+ Cassette-specific preservation, transfer and reuse decisions
- The VHS format family as a technical standard or historical technology
- VCR construction, maintenance and repair
- The films, programmes or other intellectual works recorded on the tape
- Digital preservation files and their internal technical metadata
- Ownership and copyright rules beyond cassette-specific links and action constraints
Characteristics
- Cassette format identification
- VHS; VHS-C; S-VHS; S-VHS-C; uncertain; variant inclusion subject to registry scope Determines the relevant equipment checks and whether this model applies.
- Identification evidence
- Links to observed markings, photographs, manufacturer documentation and inspection records Separates verified format identity from label-based assumptions.
- Recorded television system
- PAL; NTSC; SECAM; other documented variant; mixed; unknown Playback and transfer decisions depend on the actual recorded system and supported equipment.
- Recording speed
- SP; LP; EP/SLP; mixed; unknown, with equipment-specific interpretation Affects playback compatibility and interpretation of running time.
- Observed recorded duration
- Minutes, with observation method, coverage and uncertainty Supports transfer planning without treating the stock label as the duration of recorded content.
- Tape and transport condition
- Uninspected; no visible defect; slack; creased; broken; contaminated; jammed; other observed defect Determines whether transport could damage the tape or equipment.
- Record-protection condition
- Recording enabled; recording inhibited; altered or uncertain, based on inspected protection feature Helps prevent accidental erasure and distinguish physical protection from permission to overwrite.
- Audio recording arrangement
- Linear audio; Hi-Fi audio; both; other documented arrangement; unknown Guides playback checks and prevents a transfer from silently omitting an available audio track.
- Tested playback configuration
- Links to deck, adapter if used, settings, test date and observed result Makes a playability judgement specific to an actual configuration.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 18 questions.
Cassette format and identity Establishes which physical tape cassette is being assessed and what its markings actually demonstrate.
Similar tape formats and VHS-family variants can require different equipment, while labels can misidentify both format and contents.
Physical format
Identifies the cassette form and resolves VHS-family boundaries.
Format evidence
Record observed features and supporting documentation for the proposed cassette format, preserving uncertainty where evidence conflicts.
- Which markings and physical features support identification as VHS rather than another tape cassette format? definition
- Is this a full-size or compact cassette, and does its identified variant belong within this registry entry? boundary
Cassette and label history
Separates the tape-bearing object from replaceable packaging and claims written on it.
Identity and reuse evidence
Record cassette identifiers, label changes and evidence of reuse without assuming that a case or title describes the current recording.
- Which identifiers belong to the cassette itself, and which appear only on its case or an associated inventory? provenance
- What evidence indicates relabelling, rerecording, replacement housing or a mismatch between cassette and case? provenance
Recording and signal Describes what is recorded and the signal properties needed to recover it.
Cassette stock and exterior labels cannot establish the recording system, speed, audio arrangement or actual content coverage.
Signal identification
Distinguishes observed recording characteristics from assumptions about the tape stock.
Recorded signal profile
Record the television system, VHS or S-VHS recording identification, speed and audio arrangement where established by evidence.
- Which recording system and speed have been established, by what observation, and over which portions of the tape? measurement
- Which audio arrangements are present, and have available tracks been checked for different or missing content? measurement
Recording extent
Locates recordings, gaps and changes without requiring a full catalogue of the recorded works.
Recording segments and coverage
Record observed programme boundaries, blank or unreadable stretches and changes in recording characteristics, with explicit inspection coverage.
- Where do recordings, apparent gaps and changes in speed or signal system occur, using what position reference? measurement
- Which parts remain unexamined, and what evidence distinguishes an unrecorded stretch from a playback failure? boundary
Tape condition and transport Assesses whether the cassette can mechanically enter and pass through a playback transport.
A cassette can be correctly identified yet threaten its recording or the deck because of tape, housing or contamination problems.
Housing and tape path
Examines cassette components and visible tape before powered transport.
Mechanical readiness
Record housing damage, protective flap condition, visible tape slack, reel obstruction and evidence of broken tape or previous repair.
- What visible defects in the housing, flap, reels or exposed tape could interfere with loading or movement? measurement
- Does the inspection support loading or winding, or is specialist assessment needed before transport? action
Tape surface and contamination
Tracks observable surface problems and exposure history without diagnosing deterioration from appearance alone.
Contamination and damage evidence
Record visible deposits, suspected mould, creasing, moisture exposure and reported transport symptoms, distinguishing observations from diagnoses.
- What deposits, deformation or exposure history have been observed, and how reliable is each observation? provenance
- Which observations require isolation or specialist review before this cassette shares playback equipment with other tapes? action
Playback, preservation and reuse Connects cassette evidence to a specific playback, transfer, storage or overwrite decision.
VHS playability depends on the tape and equipment together, and successful playback alone does not establish complete preservation or permission to erase.
Playback and transfer evidence
Records the equipment used and the extent and quality of recovered signals.
Configuration and recovery
Link playback observations and transfer outputs to the deck, adapter, selected audio and relevant settings.
- Does the proposed deck and any adapter support this cassette form and the recording characteristics established so far? action
- Which video and audio portions were recovered, and which defects or omissions remain unresolved after the documented playback attempt? measurement
- What observations would trigger stopping playback to prevent further tape or equipment damage? action
Retention and record protection
Determines how to retain the cassette and whether an operation that changes its recording is allowed.
Preservation and overwrite decision
Record the cassette's protection feature, applicable retention constraints, transfer verification and condition-based storage or treatment needs.
- What is the inspected record-protection state, and what independent authority permits or prohibits erasing or recording over this tape? action
- What verified transfer coverage and retention requirements must be satisfied before reuse or disposal can be considered? boundary
- What storage or specialist treatment is indicated by this cassette's observed condition and documented exposure history? action
What the second pass must settle
- Does vr.tr.vhs denote an individual physical cassette, the VHS format family or another concept, and does an existing world model already own that meaning?
- Should VHS-C, S-VHS and S-VHS-C be included as variants here or linked to separate registered things?
- Which authoritative format and equipment references establish reliable identification tests and compatibility limits across recording systems, speeds and audio arrangements?
- Which conservation guidance should govern inspection, stopping criteria, contamination handling and storage for the cassette types included?
- What evidence is sufficient to declare a transfer complete when recordings may change speed, contain different audio tracks or continue after apparent blank sections?