Many cameras won’t show just any JPEG copied to the card. They usually expect the same folder structure, filenames, and often metadata used by images created by that camera.

For a Canon compact, files generally need to be in the camera’s normal DCIM subfolder, such as something like DCIM/100CANON, with Canon-style filenames. Putting JPEGs only in the card root or a generic DCIM folder may not work.

Even with the right folder and names, some cameras still only recognize images if they contain expected EXIF/thumbnail information similar to files made by that model. In some cases, copying EXIF from an original S100 image can help, but compatibility is not guaranteed.

Best approach:

• Inspect the original card’s exact folder layout.
• Copy your JPEGs into the same subfolder pattern.
• Match the camera’s filename format.
• If needed, preserve or copy metadata from a camera-made file.

So the issue is likely not the TV connection—it’s that the S100 is only indexing files that look like camera-native images, and it may not reliably play completely arbitrary PC-copied JPEGs.