Sure! Here's a two-paragraph answer to the question, Can I play a 4K video clip on a 1080p TV?
Yes, you can play a 4K video clip on a 1080p TV. However, the video will be downscaled to fit the lower resolution of the 1080p TV. The 4K video signal will be automatically converted to 1080p by the playback device or the TV's processor, so you'll still be watching the 4K source video, just resized. The picture quality may not be as sharp or detailed as it would be on a 4K TV, but it will still be an improvement over native HD.
It's worth noting that not all 1080p TVs are created equal, and some may have better upscaling capabilities than others. If you're planning on playing a lot of 4K content on your 1080p TV, it may be worth looking into a higher-end model with better upscaling capabilities. Additionally, if you're looking to play 4K content on a 1080p TV, it's important to make sure that your playback device (such as a 4K Blu-ray player or a streaming device) is compatible with your TV and can output a 4K signal.