| --- |
| license: cc-by-nc-4.0 |
| pretty_name: Time-Lapse Artifacts |
| annotations_creators: |
| - no-annotation |
| source_datasets: |
| - original |
| size_categories: |
| - n<1K |
| tags: |
| - video |
| - time-series |
| - longitudinal-study |
| - computer-vision |
| - drawing-process |
| - self-supervised-learning |
| - archival |
| --- |
| |
| # time-lapse-artifacts |
|
|
| An active longitudinal archive of analog drawing process. |
|
|
| **Archive scope:** 2012–Present |
| **Currently published video coverage:** September 2024–Present |
| **Release status:** Active construction release |
|
|
| The archive scope describes the underlying recording practice and holdings. It |
| does not mean that recordings from every year have been published. In the |
| audited 2026-08-18 snapshot, published video rows begin in September 2024; the |
| 2012–2016 livestream layer has not yet been ingested as public video data. |
|
|
| ## Snapshot and Coverage |
|
|
| This documentation was audited against repository commit |
| `339e6149de130cbe2d001f7a0e5247872bc788ec`. |
|
|
| | Collection tier | Published MP4s | Indexed rows | Date coverage | Metadata state | |
| | --- | ---: | ---: | --- | --- | |
| | `standard` | 338 direct files | 338 | 2025-07-15–2026-08-10 | Complete core technical metadata for every direct Standard file | |
| | `pre_standard` | 129 | 129 | 2024-09-17–2025-07-13, plus 9 unknown dates | Filename-level descriptive metadata; technical ingestion incomplete | |
| | `legacy_livestream` | 0 public videos | 0 | Historical scope 2012–2016 | Placeholder layer; ingestion pending | |
|
|
| At the pinned base revision, the Hub Viewer exposes 465 rows: 335 standard |
| rows and 130 pre-standard metadata rows. Audit found that one pre-standard row |
| referred to material that is not distributed because the required ownership |
| and provenance threshold was not met. This release removes that row from the |
| active public index. This release also indexes three previously unindexed |
| Standard files, leaving 338 standard and 129 pre-standard rows and an expected |
| 467 active Viewer rows after rebuild. |
|
|
| The builder-generated split name `train` is an archive-loading default, |
| **not** a recommended machine-learning train split. No official |
| train/validation/test partition has been defined. |
|
|
| ## Overview |
|
|
| `time-lapse-artifacts` documents analog drawing processes across different |
| recording periods and acquisition conditions. Raw video is the primary record. |
| Metadata identifies, organizes, compares, and documents recordings without |
| imposing aesthetic scores or stylistic labels. |
|
|
| The collection is a single-creator longitudinal archive. This makes it useful |
| for studying within-practice change, but it does not represent artists, |
| materials, studios, or drawing practices broadly. |
|
|
| ## Repository Structure |
|
|
| ### `Standard_Time_Lapses/` |
|
|
| The directory contains 338 direct MP4 files. `metadata.csv` is their complete |
| machine-readable canonical index: every direct file has one validated row with |
| core technical metadata. Direct placement alone is not sufficient for future |
| additions; metadata and release validation are required. |
|
|
| Each canonical metadata row now includes: |
|
|
| - a persistent `record_id` |
| - `collection_tier = standard` |
| - `is_canonical = true` |
| - `acquisition_protocol_version = standard-2025-07-15` |
| - descriptive session fields |
| - encoded video properties |
| - repository content hash and size |
| - provenance fields where documented |
|
|
| Files use a structured filename convention described in `SCHEMA.md`. A |
| filename is descriptive, but it is not the stable identity of a record; |
| external references should use `record_id`. |
|
|
| ### `Standard_Time_Lapses/Provenance/` |
|
|
| This subtree contains supporting historical records and retained exceptions. |
| It is not part of the canonical record set. |
|
|
| `2026-07-31/` preserves the completed provenance release, including mappings |
| between historical `Series_9x12` filenames and canonical records. The former |
| full duplicate video snapshot is not retained. Relationships are preserved |
| through mappings, hashes, metadata, and repository history. |
|
|
| `Unresolved_Series_9x12/` contains distinct historical recordings that do not |
| yet have enough documentation for promotion into the canonical collection. |
|
|
| ### `Pre_Standard_Time_Lapses/` |
| |
| These 129 recordings predate the standard acquisition protocol. They are |
| published for archival continuity but are not interchangeable with canonical |
| standard records. Their technical metadata remains incomplete. Missing values |
| must not be interpreted as zero, false, or evidence that a property was absent. |
| |
| Material that does not meet the archive's ownership and provenance threshold |
| is excluded from both the published media and the active metadata index. |
| |
| ### `Legacy_Livestreams_2012_2016/` |
|
|
| This directory reserves the historical livestream layer. At the audited |
| snapshot it contains no public video data. References to 2012–2016 therefore |
| describe archive scope, not current downloadable coverage. |
|
|
| ## Metadata and Provenance |
|
|
| The metadata distinguishes documented facts, established historical |
| relationships, and unresolved information. Evidence may include: |
|
|
| - exact file/blob identity |
| - original filenames and repository paths |
| - file sizes and hashes |
| - duration comparison |
| - visual continuity across recordings |
| - documented physical references |
| - repository commit history |
|
|
| Uncertain relationships are not promoted to verified relationships solely |
| because dates or filenames look similar. |
|
|
| Multiple `tool` and `medium` values use semicolons. The two fields are |
| independent observed-value lists; equal list lengths and positional pairing are |
| not guaranteed. See `SCHEMA.md`. |
|
|
| `encoded_frame_rate` is encoded playback rate. It is not the original temporal |
| sampling rate of the drawing process. |
|
|
| ## Acquisition and Stored-Video Orientation |
|
|
| The acquisition protocol effective July 15, 2025 is documented in |
| `Archive_Specifications.md`. |
|
|
| The protocol's capture orientation and a file's stored pixel orientation are |
| different concepts. The `orientation`, `width_px`, and `height_px` metadata |
| describe the published encoded file. Historical canonicalization may include a |
| rotation, crop, or transcode; those transformations are documented only where |
| evidence currently exists and must not be inferred from dimensions alone. |
|
|
| ## Annotation State |
|
|
| The videos are primarily raw and unannotated. The release does not provide: |
|
|
| - frame-level bounding boxes or segmentation masks |
| - hand, pen-tip, pose, or stroke labels |
| - aesthetic or quality scores |
| - imposed stylistic classifications |
| - calibrated physical trajectories |
| - original capture timestamps for individual time-lapse frames |
|
|
| Researchers may derive annotations, but derived labels should identify the |
| source `record_id` and pinned repository revision. |
|
|
| ## Intended and Unsupported Uses |
|
|
| ### Reasonable uses in the current release |
|
|
| - archival and drawing-process research |
| - qualitative within-creator longitudinal analysis over published coverage |
| - self-supervised video representation experiments |
| - frame-change, scene, and workspace analysis |
| - development of annotation and tracking methods |
|
|
| ### Uses requiring additional validation or calibration |
|
|
| - hand or pen-tip tracking |
| - optical-flow comparison across acquisition eras |
| - temporal behavior analysis |
| - real-world trajectory, velocity, acceleration, or motor-control measurement |
|
|
| The release does not currently provide capture intervals, acceleration factors, |
| source-frame timestamps, camera calibration, or pixel-to-physical coordinate |
| mapping. Encoded time-lapse playback must not be treated as real drawing time. |
|
|
| ### Not validated |
|
|
| - population-level claims about artists or drawing behavior |
| - clinical, biometric, authorship, or identity inference |
| - a leakage-safe training or evaluation benchmark |
| - commercial use outside the CC BY-NC 4.0 terms |
|
|
| ## Limitations and Sources of Bias |
|
|
| - The archive documents one creator and one evolving practice. |
| - Current public video coverage begins in 2024, not 2012. |
| - The standard and pre-standard tiers have substantially different metadata |
| completeness and acquisition conditions. |
| - The workspace can contain hands, tools, phones, tablets, reference material, |
| and other objects that may create visual shortcuts or occlusion. |
| - Stored resolution and frame rate do not establish physical or temporal |
| calibration. |
| - Large files make exhaustive inspection and replication expensive. |
| - No official leakage-safe split exists. |
|
|
| ## Rights, Privacy, and Audio |
|
|
| The creator confirms ownership of the published video files and depicted |
| creator-owned drawings. Material that cannot pass the ownership and provenance |
| review is not part of the active public index and is not distributed by this |
| release. This statement does not independently grant rights in incidental |
| third-party material that may appear on screens, in references, or in captured |
| audio. |
|
|
| Most canonical masters retain an audio stream. Users are responsible for |
| reviewing audio, visible screens, references, reflections, tattoos, and other |
| potentially identifying or third-party content before redistribution or model |
| release. A future proxy release should remove audio by default while preserving |
| the archival masters. |
|
|
| ## Access and Reproducibility |
|
|
| The archive is approximately 1.86 TB. Canonical files are often several |
| gigabytes each, so users should select records through `metadata.csv` before |
| downloading video. |
|
|
| For reproducible work: |
|
|
| 1. Pin a repository commit or release tag. |
| 2. Record the selected `record_id` values. |
| 3. Preserve the published `hub_xet_hash` values. |
| 4. State whether audio was retained. |
| 5. Document all rotation, crop, sampling, decoding, and proxy-generation steps. |
|
|
| Run the included validator before publishing a metadata change: |
|
|
| ```bash |
| python tools/validate_metadata.py metadata.csv |
| ``` |
|
|
| The v0.2 index can be regenerated from the pinned 335-row source index plus the |
| three audited additions: |
|
|
| ```bash |
| python tools/repair_metadata.py source_metadata.csv metadata.csv \ |
| --additions tools/metadata_additions_v0.2.csv |
| ``` |
|
|
| ## Versioning |
|
|
| The repository is under active construction. Record identity is carried by |
| `record_id`; a filename may be corrected without creating a new conceptual |
| record. Content replacement must retain provenance and should receive a new |
| content hash. |
|
|
| See `CHANGELOG.md` for release-level changes. |
|
|
| ## Documentation |
|
|
| - `metadata.csv` — canonical machine-readable index |
| - `Pre_Standard_Time_Lapses/metadata.csv` — active pre-standard public index |
| - `SCHEMA.md` — filename and metadata contracts |
| - `Archive_Specifications.md` — acquisition specifications and known gaps |
| - `VALIDATION.md` — validation scope and current results |
| - `Standard_Time_Lapses/Provenance/` — historical evidence and mappings |
|
|
| ## Citation |
|
|
| Until a DOI-backed release is available, cite the dataset and pinned revision: |
|
|
| ```bibtex |
| @dataset{maxwellinked_time_lapse_artifacts_2026, |
| author = {maxwellinked}, |
| title = {time-lapse-artifacts}, |
| year = {2026}, |
| publisher = {Hugging Face}, |
| url = {https://huggingface.co/datasets/maxwellinked/time-lapse-artifacts}, |
| note = {Active construction release; include the repository revision used} |
| } |
| ``` |
|
|
| ## License |
|
|
| The dataset is released under **CC BY-NC 4.0**. The license applies only to |
| material for which the licensor holds the necessary rights. Users must conduct |
| their own review of incidental third-party content and downstream use. |
|
|
