Markdown Version | Session Recording

Session Date/Time: 24 Jun 2025 19:00

CELLAR

Summary

The CELLAR Working Group discussed the recently received Area Director (AD) evaluation of the tags document, progress on FFV1 V4 development, and resolved an issue concerning the issue tracker for the matroska-test-files GitHub repository. Attendees were also informed about a new book that features the WG's work.

Key Discussion Points

• Administrative
  • The Note Well was read.
  • The minutes from the May interim meeting were approved.
  • It was noted that there will be no meeting in July, with the next meeting scheduled for August.
  • Discussion included the upcoming IETF 117 meeting in Madrid and the possibility of engaging with ART ADs during office hours regarding questions on the tags document evaluation.
• AD Evaluation for tags document (draft-ietf-cellar-tags)
  • A comprehensive AD evaluation for the tags document was received and posted to the mailing list on June 20th.
  • The evaluation was perceived as reasonable and actionable.
  • It was agreed that comments from this evaluation would be moved into the working group's issue tracker for better management and tracking.
• FFV1 V4 Development Update
  • An update was provided on ongoing work to improve GPU acceleration for FFV1 V3, with a focus on speed enhancements.
  • The experience gained from FFV1 V3 GPU optimization is intended to inform and guide the development of new features and improvements for FFV1 V4.
  • Speed remains the primary development challenge.
  • While the work is volunteer-driven and progress is continuous, the expectation is that work on the official text for FFV1 V4 will commence later this year.
• Matroska Test Files GitHub Repository Issue Tracker
  • An issue was raised regarding the unavailability of the issue tracker for the matroska-test-files GitHub repository.
  • The history of the repository's administration, including its transfer from the Matroska organizational account to the IETF CELLAR WG account, was briefly discussed.
  • The issue tracker for the repository was opened during the meeting.
  • This action will enable developers to file issues and track the addition of updated sample files, particularly for block addition mappings, time code, and HDR information, reflecting the latest working group specifications.
• Book Highlighting CELLAR's Work
  • Attendees were made aware of a newly published book by the University of Illinois Press that extensively discusses the CELLAR Working Group, focusing on the development of standards, specifically comparing Matroska and MXF.

Decisions and Action Items

• Decision: The issue tracker for the matroska-test-files GitHub repository (https://github.com/ietf-wg-cellar/matroska-test-files) was opened during the meeting.
• Action Item: Robert Munafo to move comments from the AD evaluation of the tags document into the relevant issue tracker.
• Action Item: Stephen Farrell to send an email to the CELLAR mailing list confirming that the issue tracker for the matroska-test-files repository has been opened, allowing for any potential objections to be raised.

Next Steps

• The Working Group's next meeting is scheduled for August.
• Continue work on FFV1 V4 development, with text processing anticipated to begin within the current year.
• Developers will proceed with adding updated sample files (e.g., for block addition mappings, time code, and HDR) to the matroska-test-files repository now that its issue tracker is open.