Markdown Version | Transcript | Recording 1 | Recording 2 | Recording 3
MOQ
Summary
The MOQ Working Group held a virtual interim meeting on June 22. The session began with administrative announcements from the Chair, including updates on past minutes, upcoming design teams, future interim planning, and the Vienna meeting slots.
The main technical agenda item was a presentation by Will Law on Dynamic Track Switching (DTS) for MOQT relays, focusing on the history of the proposal, a demonstration of a recent implementation, and discussion around resolving open issues in PR #1638.
Key Discussion Points
Administrative and Planning Updates
- London Meeting Minutes: AI-generated minutes for the London meeting have been published. Participants are requested to review them to ensure accuracy.
- Authorization Design Team: The call for members of the Authorization Design Team concludes on June 26. Interested participants should contact the chairs before this deadline.
- October Hybrid Interim: A venue poll is open until July 5 to determine the North American location for the hybrid interim in October. Atlanta has been manually added back to the options; participants wishing to update their preference to Atlanta should email the Chair directly.
- Next Interim (July 6): The next virtual interim is scheduled for July 6 (the draft submission deadline) and will focus on resolving issues related to draft-ietf-moq-transport.
- IETF Vienna Planning: MOQ has been allocated three slots. The late Friday slot will be dedicated to non-transport adopted drafts, such as:
Dynamic Track Switching (DTS) for MOQT Relays
Will Law presented on Dynamic Track Switching (DTS) for MOQT Relays, outlining the progress of the proposal:
-
Timeline & Progress:
- Initially proposed in Boulder.
- Design team established a draft.
- Cisco developed a Proof of Concept (POC) demoed by Suhas Nandakumar.
- Presented at IETF Shenzhen.
- Consensus to adopt was reached at the May 11 virtual interim.
- Nokia developed an implementation, leading to the current open PR #1638.
-
Nokia Implementation Demo: Will Law shared a pre-recorded demo prepared by Yu You (Nokia) showcasing DTS in action:
- The setup utilized three media tracks within a set (500 kbps, 1500 kbps, and 3000 kbps).
- The relay received all three tracks but only forwarded a single track.
- The demonstration showed smooth, continuous switching by toggling the forward state.
- When switching was disabled, the receiver maintained the 1080p feed regardless of bitrate input variations.
- Under simulated highly aggressive throughput oscillations, the system successfully managed fast-frequency switching close to segment boundaries.
-
PR #1638 Design Changes:
- Will Law highlighted a recent change to the PR regarding how switching is activated.
- Previously, "activate switching" was a binary flag sent with the registration of the last track. However, because out-of-order delivery of track registrations cannot be prevented in transport, the arrival order of tracks is not guaranteed.
- Consequently, the binary flag approach has been revised to avoid inadvertently triggering switching before all tracks in the set are available.
- There are five remaining open issues on PR #1638 that the WG needs to resolve to integrate DTS into the main specifications.
Decisions and Action Items
Action Items
- All Participants: Review the AI-generated London meeting minutes for accuracy.
- Interested Participants: Contact the chairs by June 26 to join the Authorization Design Team.
- All Participants: Complete the October Hybrid Interim location poll by July 5.
- DTS Contributors: Collaborate on resolving the five open issues in PR #1638 to prepare for integration into the transport specification (draft-ietf-moq-transport).
Session Date/Time: 22 Jun 2026 16:30
MOQ
Summary
The MOQ Working Group held a virtual interim meeting on June 22. The session began with administrative announcements from the Chair, including updates on past minutes, upcoming design teams, future interim planning, and the Vienna meeting slots.
The main technical agenda item was a presentation by Will Law on Dynamic Track Switching (DTS) for MOQT relays, focusing on the history of the proposal, a demonstration of a recent implementation, and discussion around resolving open issues in PR #1638.
Key Discussion Points
Administrative and Planning Updates
- London Meeting Minutes: AI-generated minutes for the London meeting have been published. Participants are requested to review them to ensure accuracy.
- Authorization Design Team: The call for members of the Authorization Design Team concludes on June 26. Interested participants should contact the chairs before this deadline.
- October Hybrid Interim: A venue poll is open until July 5 to determine the North American location for the hybrid interim in October. Atlanta has been manually added back to the options; participants wishing to update their preference to Atlanta should email the Chair directly.
- Next Interim (July 6): The next virtual interim is scheduled for July 6 (the draft submission deadline) and will focus on resolving issues related to draft-ietf-moq-transport.
- IETF Vienna Planning: MOQ has been allocated three slots. The late Friday slot will be dedicated to non-transport adopted drafts, such as:
Dynamic Track Switching (DTS) for MOQT Relays
Will Law presented on Dynamic Track Switching (DTS) for MOQT Relays, outlining the progress of the proposal:
-
Timeline & Progress:
- Initially proposed in Boulder.
- Design team established a draft.
- Cisco developed a Proof of Concept (POC) demoed by Suhas Nandakumar.
- Presented at IETF Shenzhen.
- Consensus to adopt was reached at the May 11 virtual interim.
- Nokia developed an implementation, leading to the current open PR #1638.
-
Nokia Implementation Demo: Will Law shared a pre-recorded demo prepared by Yu You (Nokia) showcasing DTS in action:
- The setup utilized three media tracks within a set (500 kbps, 1500 kbps, and 3000 kbps).
- The relay received all three tracks but only forwarded a single track.
- The demonstration showed smooth, continuous switching by toggling the forward state.
- When switching was disabled, the receiver maintained the 1080p feed regardless of bitrate input variations.
- Under simulated highly aggressive throughput oscillations, the system successfully managed fast-frequency switching close to segment boundaries.
-
PR #1638 Design Changes:
- Will Law highlighted a recent change to the PR regarding how switching is activated.
- Previously, "activate switching" was a binary flag sent with the registration of the last track. However, because out-of-order delivery of track registrations cannot be prevented in transport, the arrival order of tracks is not guaranteed.
- Consequently, the binary flag approach has been revised to avoid inadvertently triggering switching before all tracks in the set are available.
- There are five remaining open issues on PR #1638 that the WG needs to resolve to integrate DTS into the main specifications.
Decisions and Action Items
Action Items
- All Participants: Review the AI-generated London meeting minutes for accuracy.
- Interested Participants: Contact the chairs by June 26 to join the Authorization Design Team.
- All Participants: Complete the October Hybrid Interim location poll by July 5.
- DTS Contributors: Collaborate on resolving the five open issues in PR #1638 to prepare for integration into the transport specification (draft-ietf-moq-transport).
Session Date/Time: 22 Jun 2026 16:30
MOQ
Summary
The MOQ Working Group held a virtual interim meeting on June 22. The session began with administrative announcements from the Chair, including updates on past minutes, upcoming design teams, future interim planning, and the Vienna meeting slots.
The main technical agenda item was a presentation by Will Law on Dynamic Track Switching (DTS) for MOQT relays, focusing on the history of the proposal, a demonstration of a recent implementation, and discussion around resolving open issues in PR #1638.
Key Discussion Points
Administrative and Planning Updates
- London Meeting Minutes: AI-generated minutes for the London meeting have been published. Participants are requested to review them to ensure accuracy.
- Authorization Design Team: The call for members of the Authorization Design Team concludes on June 26. Interested participants should contact the chairs before this deadline.
- October Hybrid Interim: A venue poll is open until July 5 to determine the North American location for the hybrid interim in October. Atlanta has been manually added back to the options; participants wishing to update their preference to Atlanta should email the Chair directly.
- Next Interim (July 6): The next virtual interim is scheduled for July 6 (the draft submission deadline) and will focus on resolving issues related to draft-ietf-moq-transport.
- IETF Vienna Planning: MOQ has been allocated three slots. The late Friday slot will be dedicated to non-transport adopted drafts, such as:
Dynamic Track Switching (DTS) for MOQT Relays
Will Law presented on Dynamic Track Switching (DTS) for MOQT Relays, outlining the progress of the proposal:
-
Timeline & Progress:
- Initially proposed in Boulder.
- Design team established a draft.
- Cisco developed a Proof of Concept (POC) demoed by Suhas Nandakumar.
- Presented at IETF Shenzhen.
- Consensus to adopt was reached at the May 11 virtual interim.
- Nokia developed an implementation, leading to the current open PR #1638.
-
Nokia Implementation Demo: Will Law shared a pre-recorded demo prepared by Yu You (Nokia) showcasing DTS in action:
- The setup utilized three media tracks within a set (500 kbps, 1500 kbps, and 3000 kbps).
- The relay received all three tracks but only forwarded a single track.
- The demonstration showed smooth, continuous switching by toggling the forward state.
- When switching was disabled, the receiver maintained the 1080p feed regardless of bitrate input variations.
- Under simulated highly aggressive throughput oscillations, the system successfully managed fast-frequency switching close to segment boundaries.
-
PR #1638 Design Changes:
- Will Law highlighted a recent change to the PR regarding how switching is activated.
- Previously, "activate switching" was a binary flag sent with the registration of the last track. However, because out-of-order delivery of track registrations cannot be prevented in transport, the arrival order of tracks is not guaranteed.
- Consequently, the binary flag approach has been revised to avoid inadvertently triggering switching before all tracks in the set are available.
- There are five remaining open issues on PR #1638 that the WG needs to resolve to integrate DTS into the main specifications.
Decisions and Action Items
Action Items
- All Participants: Review the AI-generated London meeting minutes for accuracy.
- Interested Participants: Contact the chairs by June 26 to join the Authorization Design Team.
- All Participants: Complete the October Hybrid Interim location poll by July 5.
- DTS Contributors: Collaborate on resolving the five open issues in PR #1638 to prepare for integration into the transport specification (draft-ietf-moq-transport).
Related Documents
draft-ietf-moq-c4m, draft-ietf-moq-cmsf, draft-ietf-moq-loc, draft-ietf-moq-msf, draft-ietf-moq-privacy-pass-auth, draft-ietf-moq-secure-objects, draft-ietf-moq-transport