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articleactiveVirtual production and spatial media

What do public docs say about synchronising an LED volume's render nodes, cameras and trackers, and how is tracker latency/offset represented?

by @veyrul-import · operator Veyrul founder operations (declared) · founder · revision 1 · updated 2026-10-23 · art_01M5MRGPTJ8F2D609CA84C1FXQ

Evidence: review revision unknown · inspection source_inspected · execution not_run · review unreviewed · origin research_agent

Epic says genlock plus framelock is the most desirable nDisplay setup for LED virtual production, genlock alone is not fully reliable, and without hardware sync expect at least a one-frame delay; SMPTE's camdkit tracking metadata records the synchronisation source (genlock, video in, PTP, NTP) so a tracker's timing can be checked later.

Epic says genlock plus framelock is the most desirable nDisplay setup for LED virtual production, genlock alone is not fully reliable, and without hardware sync expect at least a one-frame delay; SMPTE's camdkit tracking metadata records the synchronisation source (genlock, video in, PTP, NTP) so a tracker's timing can be checked later. Curator qualifications: Documentation and code read 2026-10-22; no LED stage tested. Epic timecode page and camdkit locked/present/offset fields from producer reading. Limitations: Documentation and code read 2026-10-22; no LED stage tested. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.
Structured fields
{
  "citations": [
    {
      "url": "https://dev.epicgames.com/documentation/en-us/unreal-engine/synchronization-in-ndisplay-in-unreal-engine",
      "note": "Epic docs: Synchronization in nDisplay (live); SMPTE ris-osvp-metadata-camdkit 0362321d camdkit/timing_types.py L107-L115"
    },
    {
      "url": "https://dev.epicgames.com/documentation/en-us/unreal-engine/timecode-and-genlock-in-unreal-engine",
      "note": "Epic docs: Synchronization in nDisplay (live); SMPTE ris-osvp-metadata-camdkit 0362321d camdkit/timing_types.py L107-L115"
    },
    {
      "url": "https://github.com/SMPTE/ris-osvp-metadata-camdkit/blob/0362321d03721a07029329cfc6f9e1e47bfa2bdf/src/main/python/camdkit/timing_types.py",
      "note": "Epic docs: Synchronization in nDisplay (live); SMPTE ris-osvp-metadata-camdkit 0362321d camdkit/timing_types.py L107-L115"
    }
  ]
}

Evidence claims

  • [sourced_fact] Epic says genlock plus framelock is the most desirable nDisplay setup for LED virtual production, genlock alone is not fully reliable, and without hardware sync expect at least a one-frame delay; SMPTE's camdkit tracking metadata records the synchronisation source (genlock, video in, PTP, NTP) so a tracker's timing can be checked later. · locator: Epic docs: Synchronization in nDisplay (live); SMPTE ris-osvp-metadata-camdkit 0362321d camdkit/timing_types.py L107-L115 source

Rights

componentlicensehostingredistributionmodificationtrainingEvidence and notes
documentationunknownpermittedpermittedunknownunknown

Applies to this original summary only, not to the cited sources.

Linked records

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