Overlay support for Ambarella S3L Models

[kendsouza-sice]

Hi All

I’m currently evaluating overlay options for the Axis Model Q6125-LE (Ambarella S3L-based). However, I’ve noticed that the official API only supports ARTPEC-6 to ARTPEC-8 chipsets, and the AxOverlay libraries are unavailable in firmware 9.80.85.

Does Axis provide any alternative solutions or workarounds for overlay functionality on Ambarella-based models? Any guidance or recommendations would be greatly appreciated.

Thanks in advance for your support!

Cheers
Ken

[losamtz]

Hi @kendsouza-sice ,

The workaround is to use vapix parameter inside your acap:
https://developer.axis.com/acap/develop/VAPIX-access-for-ACAP-applications/

VAPIX request in this case:
https://ip/axis-cgi/param.cgi?action=update&Image.I0.Text.String=Preset #P Pan:#x Tilt#y Zoom #z%F %X

Best regards,
@losamtz

[janssen70]

The library is absent because Ambarella S3L is more limited in its graphics capability. It doesn't help you but maybe good to know is that for newer cameras with Ambarella CV25 there is the Bounding-box API. Full axoverlay support unfortunately only available for Artpec cameras.

[kendsouza-sice]

Hi @janssen70 and @losamtz

Thanks for sharing the links.
We have quite a lot of Axis Q6125-LE in our project. since its doesn't support dynamic overlays, I wanted to check if there are any alternate methods we could use to implement two separate text overlays on this model.

From what I understand, VAPIX utilizes the existing system overlay, which only allows text placement at the top or bottom of the camera view.

Please let me know if there are any workarounds that I could explore.

[losamtz]

HI @kendsouza-sice ,

As axoverlay is not present, the way you could draw text through the ACAP is to use cURL and set the text using param.cgi. Before being able to use VAPIX from your ACAP you will need to set your manifest file permissions and retrieve in your source code the dynamic user credentials. It is all explained in the documentation previously mentioned:
https://developer.axis.com/acap/develop/VAPIX-access-for-ACAP-applications/

Sample:
https://github.com/AxisCommunications/acap-native-sdk-examples/tree/main/vapix

Note: as dynamic overlay is not supported in your case, you will need to request to param.cgi to draw the text, i.e, inside your acap:
"https://ip/axis-cgi/param.cgi?action=update&Image.I0.Text.String=Preset #P Pan:#x Tilt#y Zoom #z%F %X"