EBU R98 structures BWF CodingHistory rows with keys A=, F=, B=, W=, M= and a free-text T= that should contain no commas; tool name, version and arguments therefore have no dedicated key and must be carried in T= by...

EBU R98 structures BWF CodingHistory rows with keys A=, F=, B=, W=, M= and a free-text T= that should contain no commas; tool name, version and arguments therefore have no dedicated key and must be carried in T= by convention. Curator qualifications: The specific convention (e.g. 'T=ffmpeg 9.0.2; build sha; args hash') is the producer's proposal, not a standard. FFmpeg -write_bext/coding_history writing (F2) and bitexact interaction (F3) not reinspected; behaviour untested. CodingHistory is self-asserted text with no integrity mechanism; non-WAV containers out of scope. Static reading only; no model downloaded, no video or audio processed. Limitations: Static reading only; no model downloaded, no video or audio processed. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://tech.ebu.ch/docs/r/r098.pdf",
      "note": "EBU R98-1999 key list lines 63-78"
    }
  ]
}