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- Remove inline slot definitions from 144 class files - Create 7 new centralized slot files in modules/slots/: - custodian_type_broader.yaml - custodian_type_narrower.yaml - custodian_type_related.yaml - definition.yaml - finding_aid_access_restriction.yaml - finding_aid_description.yaml - finding_aid_temporal_coverage.yaml - Add centralize_inline_slots.py automation script - Update manifest with new timestamp Rule 48: Class files must NOT define inline slots - all slots must be imported from modules/slots/ directory. Note: Pre-existing IdentifierFormat duplicate class definition (in Standard.yaml and IdentifierFormat.yaml) not addressed in this commit - requires separate schema refactor.
738 lines
18 KiB
YAML
738 lines
18 KiB
YAML
id: https://nde.nl/ontology/hc/class/VideoPost
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name: video_post_class
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title: Video Post Class
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imports:
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- linkml:types
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- ./SocialMediaPost
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- ./SocialMediaPostTypes
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- ../slots/language
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- ../slots/has_aspect_ratio
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- ../slots/available_caption_languages
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- ../slots/caption_available
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- ../slots/comment_author
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- ../slots/comment_author_channel_id
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- ../slots/comment_count
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- ../slots/comment_id
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- ../slots/comment_like_count
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- ../slots/comment_published_at
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- ../slots/has_or_had_comment_reply
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- ../slots/comment_reply_count
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- ../slots/comment_text
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- ../slots/comment_updated_at
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- ../slots/comments_fetched
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- ../slots/default_audio_language
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- ../slots/default_language
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- ../slots/dislike_count
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- ../slots/duration
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- ../slots/favorite_count
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- ../slots/frame_rate
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- ../slots/is_embeddable
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- ../slots/is_licensed_content
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- ../slots/is_made_for_kid
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- ../slots/like_count
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- ../slots/live_broadcast_content
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- ../slots/metrics_observed_at
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- ../slots/specificity_annotation
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- ../slots/template_specificity
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- ../slots/video_category_id
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- ../slots/video_comment
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- ../slots/view_count
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- ./SpecificityAnnotation
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- ./TemplateSpecificityScores
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- ./VideoComment
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- ../slots/definition
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- ../slots/has_available_caption_language
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prefixes:
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linkml: https://w3id.org/linkml/
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hc: https://nde.nl/ontology/hc/
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schema: http://schema.org/
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dcterms: http://purl.org/dc/terms/
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prov: http://www.w3.org/ns/prov#
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crm: http://www.cidoc-crm.org/cidoc-crm/
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skos: http://www.w3.org/2004/02/skos/core#
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as: https://www.w3.org/ns/activitystreams#
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wd: http://www.wikidata.org/entity/
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default_prefix: hc
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classes:
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VideoPost:
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is_a: SocialMediaPost
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class_uri: as:Video
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abstract: false
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description: 'Concrete class for video content with platform-specific properties.
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**DEFINITION**:
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VideoPost is a specialized SocialMediaPost for video content. It extends
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the base post class with video-specific slots for duration, resolution,
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captions, and engagement metrics.
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**EXTENDS**: SocialMediaPost
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This class adds:
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- Video technical properties (duration, definition, aspect ratio)
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- Caption and subtitle availability
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- Engagement metrics (views, likes, comments)
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- Platform-specific fields (YouTube category, live broadcast status)
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- Temporal markers (chapters, segments)
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**ONTOLOGY MAPPINGS**:
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| Property | Activity Streams | Schema.org |
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|----------|------------------|------------|
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| Class | as:Video | schema:VideoObject |
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| duration | as:duration | schema:duration |
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| definition | - | schema:videoQuality |
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| caption | - | schema:caption |
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| view_count | - | schema:interactionStatistic |
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**PLATFORM SUPPORT**:
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| Platform | Duration Limit | Resolution | Captions |
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|----------|----------------|------------|----------|
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| YouTube | 12 hours (verified) | Up to 8K | VTT, SRT |
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| Vimeo | Varies by plan | Up to 8K | VTT, SRT |
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| Facebook | 4 hours | Up to 4K | Auto-generated |
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| TikTok | 10 minutes | 1080p | Auto-generated |
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| Instagram Reels | 90 seconds | 1080p | Auto-generated |
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**HERITAGE INSTITUTION USE CASES**:
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| Content Type | Typical Duration | Platform |
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|--------------|------------------|----------|
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| Virtual tours | 10-30 min | YouTube |
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| Conservation docs | 5-20 min | YouTube, Vimeo |
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| Curator interviews | 15-60 min | YouTube |
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| Object spotlights | 2-5 min | YouTube, Instagram |
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| Short clips | 15-60 sec | TikTok, Reels |
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| Live recordings | 30-120 min | YouTube |
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**METRICS OBSERVATION**:
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Video metrics (views, likes, comments) are observational data that change
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constantly. Each metric reading should include:
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- `metrics_observed_at`: When metrics were recorded
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- `retrieval_timestamp`: When API call was made
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**RELATIONSHIP TO VideoPostType**:
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- VideoPost is a **concrete post instance** with video content
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- VideoPostType is a **type classification** for categorizing posts
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- A VideoPost typically has `post_types: [VideoPostType]`
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- But may also have multiple types: `[LiveStreamPostType, VideoPostType]`
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**CAPTION AND SUBTITLE DISTINCTION**:
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Related classes for textual content derived from video:
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- VideoSubtitle: Time-coded text (SRT/VTT format)
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- VideoTranscript: Full text without timestamps
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- VideoAnnotation: Computer vision derived content
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See VideoTextContent hierarchy for detailed modeling.
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'
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exact_mappings:
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- as:Video
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- schema:VideoObject
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close_mappings:
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- crm:E73_Information_Object
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related_mappings:
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- wikidata:Q34508
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- wikidata:Q604644
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slots:
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- has_aspect_ratio
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- available_caption_languages
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- caption_available
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- comment_count
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- comments_fetched
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- default_audio_language
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- default_language
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- definition
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- dislike_count
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- duration
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- favorite_count
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- frame_rate
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- is_embeddable
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- is_licensed_content
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- is_made_for_kid
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- like_count
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- live_broadcast_content
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- metrics_observed_at
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- specificity_annotation
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- template_specificity
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- video_category_id
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- video_comment
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- view_count
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slot_usage:
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duration:
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slot_uri: schema:duration
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description: 'Duration of the video in ISO 8601 format.
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Schema.org: duration for media length.
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**Format**: ISO 8601 duration (e.g., "PT10M59S" = 10 minutes 59 seconds)
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**Common Patterns**:
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- PT30S = 30 seconds
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- PT5M = 5 minutes
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- PT1H30M = 1 hour 30 minutes
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- PT2H15M30S = 2 hours 15 minutes 30 seconds
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'
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range: string
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required: false
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pattern: ^P(T(\d+H)?(\d+M)?(\d+S)?)?$
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examples:
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- value: PT10M59S
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description: 10 minutes and 59 seconds
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- value: PT1H30M
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description: 1 hour 30 minutes
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definition:
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slot_uri: schema:videoQuality
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description: 'Video resolution/definition quality.
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Schema.org: videoQuality for resolution class.
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**Values**:
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- sd: Standard definition (480p or lower)
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- hd: High definition (720p, 1080p)
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- 4k: Ultra HD (2160p)
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- 8k: Full Ultra HD (4320p)
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'
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range: VideoDefinitionEnum
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required: false
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examples:
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- value: hd
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description: High definition (720p/1080p)
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has_aspect_ratio:
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slot_uri: schema:width
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description: 'Video aspect ratio.
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**Common Values**:
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- 16:9: Standard widescreen (YouTube default)
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- 9:16: Vertical (Shorts, Reels, TikTok)
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- 4:3: Classic TV format
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- 1:1: Square (Instagram legacy)
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- 21:9: Cinematic ultrawide
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'
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range: string
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required: false
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examples:
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- value: '16:9'
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description: Standard widescreen
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- value: '9:16'
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description: Vertical format for Shorts/Reels
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frame_rate:
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slot_uri: hc:frameRate
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description: 'Video frame rate in frames per second.
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**Common Values**:
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- 24: Cinema standard
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- 25: PAL standard
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- 30: NTSC standard
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- 60: High frame rate
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'
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range: float
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required: false
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examples:
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- value: 30.0
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description: 30 frames per second
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caption_available:
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slot_uri: schema:hasPart
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description: 'Whether captions/subtitles are available for this video.
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Indicates if the video has any caption tracks (auto-generated or manual).
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Related: Use `available_caption_languages` for specific languages.
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'
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range: boolean
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required: false
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examples:
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- value: true
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description: Video has captions available
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- value: false
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description: No captions available
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default_language:
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slot_uri: schema:inLanguage
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description: 'Default/primary language of the video content.
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Schema.org: inLanguage for content language.
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ISO 639-1 code (e.g., "nl", "en", "de").
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Refers to on-screen text, title, description language.
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'
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range: string
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required: false
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examples:
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- value: nl
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description: Dutch language content
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default_audio_language:
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slot_uri: hc:defaultAudioLanguage
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description: 'Language of the video''s default audio track.
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ISO 639-1 code. May differ from `default_language` for
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dubbed or multilingual content.
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'
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range: string
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required: false
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examples:
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- value: nl
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description: Dutch audio track
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has_available_caption_language:
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slot_uri: hc:availableCaptionLanguages
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description: 'List of languages for which captions are available.
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ISO 639-1 codes for all caption tracks.
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'
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range: string
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multivalued: true
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required: false
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examples:
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- value:
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- nl
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- en
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- de
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description: Captions available in Dutch, English, German
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view_count:
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slot_uri: schema:interactionCount
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description: 'Number of views for this video.
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Schema.org: interactionCount for view statistic.
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**OBSERVATIONAL**: This value changes constantly.
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Always record `metrics_observed_at` timestamp.
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'
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range: integer
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required: false
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minimum_value: 0
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examples:
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- value: 132
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description: 132 views at observation time
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like_count:
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slot_uri: hc:likeCount
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description: 'Number of likes/upvotes for this video.
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Platform-specific: YouTube likes, Facebook reactions, etc.
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**OBSERVATIONAL**: Record with `metrics_observed_at`.
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'
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range: integer
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required: false
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minimum_value: 0
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examples:
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- value: 2
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description: 2 likes at observation time
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dislike_count:
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slot_uri: hc:dislikeCount
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description: 'Number of dislikes/downvotes (if available).
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Note: YouTube hid public dislike counts in Nov 2021.
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API may still return dislike data for channel owners.
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'
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range: integer
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required: false
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minimum_value: 0
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comment_count:
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slot_uri: hc:commentCount
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description: 'Number of comments on this video.
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**OBSERVATIONAL**: Record with `metrics_observed_at`.
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'
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range: integer
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required: false
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minimum_value: 0
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examples:
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- value: 0
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description: No comments at observation time
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favorite_count:
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slot_uri: hc:favoriteCount
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description: 'Number of times video was favorited/saved.
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Platform-specific availability.
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'
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range: integer
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required: false
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minimum_value: 0
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metrics_observed_at:
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slot_uri: prov:atTime
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description: 'Timestamp when engagement metrics were recorded.
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PROV-O: atTime for observation timestamp.
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**CRITICAL**: Metrics change constantly. This timestamp
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indicates when view_count, like_count, etc. were observed.
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'
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range: datetime
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required: false
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examples:
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- value: '2025-12-01T23:16:22.294232+00:00'
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description: Metrics observed December 1, 2025
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video_category_id:
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slot_uri: hc:videoCategoryId
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description: 'Platform-specific category identifier.
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**YouTube Category IDs**:
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- 1: Film & Animation
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- 2: Autos & Vehicles
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- 10: Music
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- 15: Pets & Animals
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- 17: Sports
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- 19: Travel & Events
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- 20: Gaming
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- 22: People & Blogs
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- 23: Comedy
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- 24: Entertainment
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- 25: News & Politics
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- 26: Howto & Style
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- 27: Education
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- 28: Science & Technology
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- 29: Nonprofits & Activism
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'
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range: string
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required: false
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examples:
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- value: '22'
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description: 'YouTube: People & Blogs'
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- value: '27'
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description: 'YouTube: Education'
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live_broadcast_content:
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slot_uri: hc:liveBroadcastContent
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description: 'Live broadcast status of the video.
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**Values**:
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- none: Not a live broadcast (standard video)
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- live: Currently broadcasting live
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- upcoming: Scheduled live stream not yet started
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When `live` or `upcoming` becomes `none`, video is archived.
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'
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range: LiveBroadcastStatusEnum
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required: false
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examples:
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- value: none
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description: Standard video (not live)
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- value: live
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description: Currently broadcasting
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is_licensed_content:
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slot_uri: hc:isLicensedContent
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description: 'Whether the video contains licensed content (music, clips).
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Affects monetization and regional availability.
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'
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range: boolean
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required: false
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is_embeddable:
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slot_uri: hc:isEmbeddable
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description: 'Whether the video can be embedded on external sites.
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Publisher-controlled setting.
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'
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range: boolean
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required: false
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is_made_for_kid:
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slot_uri: hc:isMadeForKids
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description: 'Whether the video is designated as made for children.
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COPPA compliance flag. Affects comments, ads, features.
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'
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range: boolean
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required: false
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comments_fetched:
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slot_uri: hc:commentsFetched
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description: 'Number of comments actually fetched/archived.
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May be less than `comment_count` due to API limits,
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deleted comments, or pagination.
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'
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range: integer
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required: false
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minimum_value: 0
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examples:
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- value: 0
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description: No comments fetched
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video_comment:
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slot_uri: hc:videoComments
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description: 'Collection of comments on this video.
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Structured comment data with author, text, timestamp, likes.
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Note: Comments may contain nested replies.
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'
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range: VideoComment
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multivalued: true
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required: false
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inlined: true
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specificity_annotation:
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range: SpecificityAnnotation
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inlined: true
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template_specificity:
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range: TemplateSpecificityScores
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inlined: true
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comments:
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- Extends SocialMediaPost with video-specific properties
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- Maps to as:Video and schema:VideoObject
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- Metrics are observational - always include metrics_observed_at
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- Caption availability signals but not content (see VideoSubtitle)
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- YouTube is primary platform for heritage institution video content
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see_also:
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- https://www.w3.org/ns/activitystreams#Video
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- https://schema.org/VideoObject
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- https://developers.google.com/youtube/v3/docs/videos
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VideoComment:
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class_uri: schema:Comment
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description: 'A comment on a video post.
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Models user-generated comments with author, text, timestamp,
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and engagement metrics. Supports nested reply threads.
|
|
|
|
'
|
|
exact_mappings:
|
|
- schema:Comment
|
|
- as:Note
|
|
slots:
|
|
- comment_author
|
|
- comment_author_channel_id
|
|
- comment_id
|
|
- comment_like_count
|
|
- comment_published_at
|
|
- has_or_had_comment_reply
|
|
- comment_reply_count
|
|
- comment_text
|
|
- comment_updated_at
|
|
- specificity_annotation
|
|
- template_specificity
|
|
slot_usage:
|
|
comment_id:
|
|
slot_uri: dcterms:identifier
|
|
description: Unique identifier for the comment
|
|
range: string
|
|
required: true
|
|
comment_author:
|
|
slot_uri: schema:author
|
|
description: Display name of comment author
|
|
range: string
|
|
required: true
|
|
comment_author_channel_id:
|
|
slot_uri: hc:authorChannelId
|
|
description: Platform channel/account ID of author
|
|
range: string
|
|
required: false
|
|
comment_text:
|
|
slot_uri: schema:text
|
|
description: Full text content of the comment
|
|
range: string
|
|
required: true
|
|
comment_published_at:
|
|
slot_uri: dcterms:created
|
|
description: When comment was originally posted
|
|
range: datetime
|
|
required: true
|
|
comment_updated_at:
|
|
slot_uri: dcterms:modified
|
|
description: When comment was last edited
|
|
range: datetime
|
|
required: false
|
|
comment_like_count:
|
|
slot_uri: hc:likeCount
|
|
description: Number of likes on this comment
|
|
range: integer
|
|
required: false
|
|
minimum_value: 0
|
|
comment_reply_count:
|
|
slot_uri: hc:replyCount
|
|
description: Number of replies to this comment
|
|
range: integer
|
|
required: false
|
|
minimum_value: 0
|
|
has_or_had_comment_reply:
|
|
slot_uri: schema:comment
|
|
description: Nested reply comments
|
|
range: VideoComment
|
|
multivalued: true
|
|
required: false
|
|
inlined: true
|
|
specificity_annotation:
|
|
range: SpecificityAnnotation
|
|
inlined: true
|
|
template_specificity:
|
|
range: TemplateSpecificityScores
|
|
inlined: true
|
|
enums:
|
|
VideoDefinitionEnum:
|
|
description: 'Video resolution/definition quality categories.
|
|
|
|
|
|
Based on common platform standards.
|
|
|
|
'
|
|
permissible_values:
|
|
sd:
|
|
description: Standard definition (480p or lower)
|
|
hd:
|
|
description: High definition (720p, 1080p)
|
|
uhd:
|
|
description: Ultra HD (2160p/4K)
|
|
4k:
|
|
description: 4K resolution (2160p) - alias for uhd
|
|
8k:
|
|
description: Full Ultra HD (4320p)
|
|
LiveBroadcastStatusEnum:
|
|
description: 'Live broadcast status values for video content.
|
|
|
|
|
|
Based on YouTube API liveBroadcastContent values.
|
|
|
|
'
|
|
permissible_values:
|
|
none:
|
|
description: Not a live broadcast (standard uploaded video)
|
|
live:
|
|
description: Currently broadcasting live
|
|
upcoming:
|
|
description: Scheduled live stream that hasn't started yet
|