How to make a slide show that will play on an street TV?

Will the 4 TVs be working as one big TV using “video wall” hardware or software? Sounds cool.

I have more then 40 PDF and some pictures and want to show them slideshow automatically

By @ahmad_0547

You posted this question in the Lightroom Classic community, so the first thing to note is that Lightroom Classic does not natively read PDF files. If you want PDF files to be part of the slideshow, you won’t be able to use the Slideshow module in Lightroom Classic to run the show unless you first convert the PDF files to image formats compatible with Lightroom Classic.

You don’t have to convert the PDF files if you use other software to run the slide show. For example, you can put all of your files into Windows applications such as Microsoft PowerPoint, Google Slides, or Adobe Acrobat, and run the show that way. PowerPoint and Google Slides will have more powerful slide show tools than Acrobat.

Or, build the slide show in one of those apps and export as a video, so that it can be easily played back as a simple video file from any Windows or Android device you have. If you want the final slide show to be a video, then you could also build it in any video editing application you have. But again, many video applications do not natively import PDF files, so they will probably need to be converted to a compatible image format such as JPEG.

Assuming you are using Lightroom-Classic:  The Slideshow module in Lr-Classic can output (Save) an MP4 Video file (or PDF ) of photos.  A Video file could then be displayed with VLC or Windows Media Player. How you connect your "set of 4" to the Windows PC is another question.

What is street TV? Googling that gives 1000's of different results that don't seem to be related to your question. It sounds like it is a specific device?