I have a question about video channel control.

[OhsureBoy]

My source code is as follows.

vdo_map_set_uint32(settings, "width", 1920);
vdo_map_set_uint32(settings, "height", 1080);
vdo_map_set_uint32(settings, "bitrate", 0);
vdo_map_set_uint32(settings, "framerate", 0);

vdo_map_set_boolean(settings, "dynamic.bitrate", TRUE);
vdo_map_set_uint32(settings, "rc.mode", VDO_RATE_CONTROL_MODE_MBR );
vdo_map_set_uint32(settings, "channel", 1);
vdo_map_set_uint32(settings, "gop_length", 30);
vdo_map_set_uint32(settings, "compression", 0);

---

VdoMap *settings = vdo_map_new();
vdo_map_set_uint32(settings, "channel",1);

if (!vdo_stream_set_settings(stream, settings, &videoCapture->error)) {
    g_error("\n @@@@@@@@@@ Error: %s\n",  videoCapture->error->message);
}
g_object_unref(settings);


Why doesn't the video channel change?

I would appreciate it if you could tell me how to change the channel.

[github-actions[bot]]

This automatically generated reply acts as a friendly reminder.

Answers to your questions will most often come from the community, from developers like yourself. You will, from time to time, find that Axis employees answers some of the questions, but this is not a guarantee. Think of the discussion forum as a complement to other support channels, not a replacement to any of them.

If your question remains unanswered for a period of time, please revisit it to see whether it can be improved by following the guidelines listed in Axis support guidelines.

[vivekatoffice]

Hi @OhsureBoy ,

You can use VAPIX to find out available channels :

What is the response you get for the following API:

http://<IP Address>//axis-cgi/param.cgi?action=list&group=root.ImageSource.NbrOfSources

[OhsureBoy]

I'm not sure what you're talking about.

If you are talking about "input", as far as I know, 1 is the default.

But I'm asking about channel settings.

If you set the channel to 5, it becomes an overview, and it asks if you can change the channel during streaming, and if so, how to do it.

When I changed the settings in the middle, the channel did not change.

[vivekatoffice]

Hey buddy, I have a suggestion that might make things easier for you. Why not provide a sample ACAP project repo along with the details of your Axis camera model and the firmware you're using? That way, you'll likely get the help you need more quickly. It'll give others a better understanding of your setup and they can offer more targeted assistance. What do you think?

[OhsureBoy]

https://github.com/AxisCommunications/acap3-examples/blob/main/vdostream/app/vdoencodeclient.c

This is the example file I used.

The model of the product I am using is AXIS F9114 Main Unit.

The firmware version is 11.9.60.

If you look at the example file above, there is a setting section before starting the stream. The settings I set are as above.

SDK detailed description

https://axiscommunications.github.io/acap-documentation/docs/acap-sdk-version-3/api/src/api/vdostream/html/vdo-stream_8h.html

I reported it here.

[vivekatoffice]

This example only printing logs. I don't know how to save it and verify the image 😢

Also, I noticed the following:

This camera model has 2 ARTPEC7 chips. I am not sure how that will be handled in ACAP vdostream example😢

I suggest you also raise an issue with all details here

Notes for acap3-examples repo:

Important

This repository has examples for ACAP version 3 SDK, which is not the latest
version and might therefore not get updates, bug fixes or answers on tickets
as frequently.

It's recommended to move to ACAP version 4 SDK which is the active track:

[OhsureBoy]

I posted this in case someone knew.
Thank you for answer.