Workflow block velocity

Community Help
1

Hi
I am running a workflow with inference workflows process-video on my local inference server.

I am trying to use the workflow block “velocity”, but I am continuously getting errors:

RuntimeError: Encountered the following errors while processing the video:
{
“error_type”: “ExecutionEngineRuntimeError”,
“error_message”: “Requested Workflow output serialization, but for output velocity which evaluates into Python
type: <class ‘supervision.detection.core.Detections’> cannot successfully apply any of registered serializers.”,
“error_context”: “inference_thread”

It is not clear, how to vizualize the outputs of velocity. I am trying to use label visualizalization, but the error remains. the documentation of this building block seems a bit “light”, but I would appreciate any hints on how to get that running. (both for visualizing and for sinking the data for later analysis)

thx & cheers
Thomas

  • **Project Type:**inference on mp4 videos
  • **Operating System & Browser:**roboflow inference server GPU latest running on Docker/Debian12
  • **Project Universe Link or Workspace/Project ID:**beeometer
2

Hi @Thomas ,

Thank you for reporting this issue. Indeed, there was a problem with output representation of velocity block - this was fixed in Inference package and fix will be included in next release of Inference.

Thanks again,
Grzegorz

3

Hi Grzegorz

cool, thanks for the quick fix…so that will be available in v0.50.5 ?

thx & cheers

Thomas

4

Hi @Thomas,

We are already at 0.50.5 - so next release, most likely this Friday

Thanks again,
Grzegorz