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Hey so I have a Pico Ultra with MIS5001 connected, and I've been modifying `/oem/usr/share/rkipc-mis5001-500w.ini` to suit, however, I've found that when changing the [video.0] width, height, max_width and max_height, the image is stretched. It appears that the camera mode is not changed perhaps, just the output?

I've tried 1920x1080 and 2880x1616, but get the same results.

How can I get an actual 16:9 image, instead of 4:3 image that is stretched?

Thank you in advance!

Hello, you can use the v4l2-ctl command to obtain the desired ratio. For related commands, you can refer to https://wiki.luckfox.com/IMX415-Camera/

Hi,

Thanks, but this does not appear to work when using RTSP?

I am wanting to have RTSP streaming + UVC, ideally using FASTBOOT, with 16:9 resolution.

I tried but as you can see it does not like it. Thoughts? Thank you

Hi,

That did not work: As mentioned, I can change the resolution in /oem/usr/share/rkipc-mis5001-500w.ini but that does not change the aspect ratio, so I want to know how to change that.

This is for the RTSP stream with the factory buildroot image. I don't need to use V4L2 ideally.

Thanks

Hello, by default, the RTSP streaming of the rkipc application is implemented based on the RKMPI library. In the VI stage, the RAW image of the sensor is obtained and scaled according to the resolution specified in the rkipc-mis5001-500w.ini configuration (unlike the crop operation, which will stretch the image). The crop operation can be implemented by introducing the VPSS component (rkipc does not introduce it by default and requires secondary development).
The resolution setting of v4l2-ctl is also a scale operation, and the configuration is not shared with the configuration of rkmpi.
To enable both RTSP and UVC to work simultaneously, it is necessary to combine the source code of rkipc and uvc-tiny-app on the source code level, and introduce two VENCs to complete it. This is not a simple task. If used on fastboot, the difficulty of the read-only file system will further increase. We currently have no development plans in this area and cannot provide suggestions.

Thank you for that information, but I apologise it still was not what I was asking.

I've done this with a Milk-V Duo now instead, which works with a 16:9 aspect ratio when set to 1920x1080.

The ISP designs for different platforms are different, and the output of the same software application on different platforms is also different.
The Milk-V Duo you are using may have integrated the crop function into the ISP.
As far as I know, the ISP of rv1106 does not have a crop function. The target resolution settings are all achieved through scaling. The 1920x1080 images you obtained using v4l2-ctl are all obtained by stretching from the original 2592 x 1944. The best way to obtain a normal 16:9 ratio is to use the crop operation of VPSS to crop the original image.

Thank you kindly for that information!