VAPIX API Calls within ACAP Runtime Best Practices

[edsysteminence]

Hi all,

I'm currently working on an AXIS ACAP project where stream handling is managed by instantiating a VideoCaptureClient object and opening a dedicated stream via grpcio as instructed in the relevant documentation.

For the next phase of the project however, there's a requirement to use one of the preconfigured View Areas on the AXIS camera. Rather than relying solely on the gRPC approach, I'm considering using the VAPIX API to open an h.264 stream tied specifically to one of these preconfigured view areas executed from within the acap-runtime software running directly on the camera.

Is it considered good practice or more efficient to use VAPIX API calls for this purpose inside the ACAP runtime? If not, what’s the recommended method to access an h.264 stream from a preconfigured view area from within an ACAP application?

Any best practice suggestions or guidance on pitfalls with this approach would be appreciated!

Thanks in advance!

[github-actions[bot]]

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[Cacsjep]

Using VDO is the preferred way :), VideoCapture client does not support view areas: https://github.com/orgs/AxisCommunications/discussions/1087#discussion-8623442

Checkout the vdo C examples.

[vivekatoffice]

Hi @edsysteminence ,
I got the confirmation from ACAP experts that:

It is possible to get video from a view area using vdo, by using the "channel" key in the settings map, then it is also possible using acap-runtime . But may need to rebuild acap-runtime doing some changes

Image reference

[vivekatoffice]

Feel free to re-open it OR share the solution/alternative/comment if already resolved👁️‍🗨️