I am reaching out regarding a synchronization issue involving a Canon C400 and its IP-based zoom encoder data.

The Setup:

• Camera: Canon C400, video input via AJA Corvid44-8K (4K)

• Network: Two dedicated NICs  Intel I226-V (1Gbit, subnet 10.20.20.x) for TrackMen tracking and Canon lens metadata; Marvell AQtion (10Gbit, subnet 10.20.30.x) for NDI output and live streaming

• Outputs: 3x 4K real-time (2x AJA SDI + 1x NDI)

• GPU: RTX 5090, performance at 70–80%

The Problem:

The output logs shows that the system cannot maintain latency with the zoom encoder and a continuous increase in the frame counter, leading to a progressive drift that cause a total loss of the camera feed ("NO INPUT" / pink-red screen).

Key Observations:

1. The error specifically references the zoom encoder, not tracking.

2. Non-Recoverable: Disconnecting the zoom encoder in the I/O window does not reset the pipeline; only a full restart restores the feed.

3. The Canon lens data and NDI/streaming are already on separate NICs and subnets, yet the issue persists.

Questions:

1. Could the added system load from streaming destabilize the zoom encoder timing, even though it runs on a separate NIC?

2. Is there a way to flush/reset the pipeline once the latency starts building, without a full restart?

3. Are there recommended buffer or timeout settings for the Canon IP lens protocol that could improve stability?

Looking forward to hear from you

Best regards,

Inverve Studio