# What do archives and tools document about using BagIt with OAIS/PREMIS for audiovisual collections, and what went wrong in practice?

- id: art_01M5MDZ0N48TVW6NV4P7Q1DHB8
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T20 · tags: none
- updated: 2026-10-23T13:07:20.861Z
- url: https://veyrul.com/articles/art_01M5MDZ0N48TVW6NV4P7Q1DHB8

Archivematica documents AIPs as BagIt bags containing METS, but its 1.13 page gives inconsistent manifest algorithms across its own examples. Indiana University's MDPI relied on Matroska per-element CRCs written by FFmpeg (about 100 bytes unprotected), packaged film as BagIt tarballs (DPX, WAV, metadata) with a custom multithreaded verifier, and reported that a vendor bagit.txt reading 'BagIt-version' made them re-handle over 2 PB. Per the L07 correction on C2-B10-G2-07, ABNF quoted strings are case-insensitive, so this shows IU's tooling or acceptance criterion, not a proven RFC nonconformance.

Archivematica documents AIPs as BagIt bags containing METS, but its 1.13 page gives inconsistent manifest algorithms across its own examples. Indiana University's MDPI relied on Matroska per-element CRCs written by FFmpeg (about 100 bytes unprotected), packaged film as BagIt tarballs (DPX, WAV, metadata) with a custom multithreaded verifier, and reported that a vendor bagit.txt reading 'BagIt-version' made them re-handle over 2 PB. Per the L07 correction on C2-B10-G2-07, ABNF quoted strings are case-insensitive, so this shows IU's tooling or acceptance criterion, not a proven RFC nonconformance.

Curator qualifications: Documents read 2026-10-22; no bag created or validated. Archivematica 1.10 page (S16) not re-read; actual AIP output not observed. Slides are a presentation, not a report.

Limitations: Documents read 2026-10-22; no bag created or validated.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://www.rfc-editor.org/rfc/rfc8493.txt",
      "note": "Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files"
    },
    {
      "url": "https://archivematica.org/en/docs/archivematica-1.13/user-manual/archival-storage/aip-structure/",
      "note": "Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files"
    },
    {
      "url": "https://archivematica.org/en/docs/archivematica-1.10/user-manual/archival-storage/aip-structure/",
      "note": "Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files"
    },
    {
      "url": "https://mdpi.iu.edu/doc/MDPIwhitepaper.pdf",
      "note": "Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files"
    },
    {
      "url": "https://www.digitalpreservation.gov/meetings/DSA2018/Day_1/17_CP_P2-2_Wheeler_Indiana_University.pdf",
      "note": "Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Archivematica documents AIPs as BagIt bags containing METS, but its 1.13 page gives inconsistent manifest algorithms across its own examples. Indiana University's MDPI relied on Matroska per-element CRCs written by FFmpeg (about 100 bytes unprotected), packaged film as BagIt tarballs (DPX, WAV, metadata) with a custom multithreaded verifier, and reported that a vendor bagit.txt reading 'BagIt-version' made them re-handle over 2 PB. Per the L07 correction on C2-B10-G2-07, ABNF quoted strings are case-insensitive, so this shows IU's tooling or acceptance criterion, not a proven RFC nonconformance. · locator: Archivematica 1.13 docs: AIP structure (live); IU MDPI white paper PDF, Matroska section; Wheeler, IU, DSA 2018 slides PDF, Film Preservation Format and Malformed Data Files · source: https://www.rfc-editor.org/rfc/rfc8493.txt

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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