Why doesn't SyncSetInputStreamHandler doesn't work properly with OpenVINO model server?

[Vishwa2684]

Hello everyone,
I'm currently trying to integrate the object tracking example from my mediapipe fork into OVMS. I've wrote a custom object detction subgraph to utilize ovms inference and to use it in ovms. I've added the recent commit of my fork to mediapipe in OVMS workspace, built custom ovms image and wrote a demo utilizing object tracking graph. But during OVMS inference My graph was able to detect a few detections and none of them were tracked in the entire video. When i checked the container logs it showed the following issues:

• motion_analysis_calculator.cc:352] No input video header found. Downstream calculators expecting video headers are likely to fail.
• box_tracker_calculator.cc:1230] Received start pos beyond current timestamp, Starting to track once frame arrives.

Based on my analysis I think it is an issue related to those specific calculators or an issue caused due to SyncSetInputStreamHandler in BoxTrackingSubgraphCpu as specified in OVMS mediapipe docs

I would be grateful, if I could get any guidance on the following issues which I'm facing during custom graph integration in OVMS.