Increasing the quality of live view

[moataz-youssef]

First of all thanks for the awesome work. I have previously been using RPi-Cam-Web-Interface (https://github.com/silvanmelchior/RPi_Cam_Web_Interface/). There was the live stream quality a lot better. Is there anything I can do to increase the quality? I can go down with the resolution but I don't want to have visible artifacts or pixelation while streaming the video. Thanks a lot in advance.

[moataz-youssef]

I am running raspi-cam-srv on a RPi 4B on the HQ Camera and the system is connected to a PC using gigabit ethernet.

[signag]

I also see the bad quality of the live stream for the Pi4.
But I do not see this on a Pi2 or a Pi5, on which I am testing, too.
Need to investigate what is specific for the Pi4.

[moataz-youssef]

I also see the bad quality of the live stream for the Pi4. But I do not see this on a Pi2 or a Pi5, on which I am testing, too. Need to investigate what is specific for the Pi4.

Thanks for your reply. Do you mean PiZero 2?

So far I have tested your software with a Pi4 and a PiZero 1W and I have to say that the streaming quality was not satisfactory and changing the settings usually results in instability where I have to restart the server.

I have a Pi5 and a PiZero 2, so I might give it a go. But if the quality can be improved on a Pi4, this will be awesome.

[signag]

Below are screenshots for Pi Zero, Pi Zero 2, Pi 4 and Pi 5, all with different cameras but with the default configurations:

Pi Zero W:

Pi Zero 2 W:

Pi 4:

Pi 5:

It can be seen that only the Pi 4 shows a bad quality of the preview.

Actually, raspiCamSrv just starts the camera in a specific mode and does not really have influence on the preview quality, except for controlling the camera configuration and controls to be used.

[signag]

Hi

comming back to this issue from long ago ...

the bad quality on the live stream for the Pi 4 seems to be related to the YUV format which according to the Picamera2 manual must be used for the lores stream for Pi4 and earlier.

Changing the settings for the Live View to Stream "main" and Stream Format "RGB888" gives much better quality.

See also my comment to issue #37.

Could we close this issue?

Thanks

[moataz-youssef]

Hi

comming back to this issue from long ago ...

the bad quality on the live stream for the Pi 4 seems to be related to the YUV format which according to the Picamera2 manual must be used for the lores stream for Pi4 and earlier.

Changing the settings for the Live View to Stream "main" and Stream Format "RGB888" gives much better quality.

See also my comment to issue #37.

Could we close this issue?

Thanks

Thanks for the update. I will give it a try. Is this specific to the RPi4/HQ Camera combo or just for the RPi4 regardless of the camera used?

[signag]

As far as I can see, this applies to all cameras on a Pi 4.
On Pi Zero and Pi Zero 2, I use the same default settings as for the Pi 4 with Stream "lores" and Stream Format "YUV420" and there I see normal quality.

[moataz-youssef]

I still see a quality difference between Stream and Photo. Moreover, when both are set to use the "main" format, taking a photo crashes the live stream. The live stream stops and no error is displayed.

Here are my settings for live:

And here are those for photo: