Is there a limit on the size of chromecast custom receiver application?

Question

I have chromecast custom receiver application that just show photo. When I use photo size 2 mb it works, when photo 20 mb, custom receiver is crashes. I use chromecast ultra.

Addition: Actually it depends on image resolution, not size. If resolution more then 7000 by width or heigh custom receiver crashes. Ratio doesn't matter

Answer 1

Here's what's on the documentation:

Images have a display size limitation of 720p (1280x720). Images should be optimized to 1280x720 or less to avoid scaling down on the receiver device.

So you clearly have exceeded the limitation.