The best way to watch Mentre ero via legally and in high quality is through the official broadcaster's platform:

If you need subtitles, search for "Mentre ero via S01E02 subtitles" on reputable database sites, though Italian WEBRips often have "hardcoded" or "burned-in" subtitles if they were ripped from a live stream with CC enabled.

The video was captured from a streaming service (likely RaiPlay).