The issue with the channel logo for TS5

I’d like to know the dimensions of the channel logo for TS5. I’ve been using a 16x16 image size for the channel logo, but it’s too blurry. I’d like to know what dimensions are used for both channel and room logos.

You can use images which are bigger than 32x32 or 128x128 or an svg.
The images are scaled down or up if needed.