Each part tells you something about the source and quality:
| Component | Meaning | |-----------|---------| | | Series title | | S01 | Season 1 | | 720p | Vertical resolution = 720 lines (progressive scan) → 1280×720 pixels | | WEB | Source = Web-download (from a streaming service like HBO Max, iTunes, Amazon) | | H264 | Video codec = AVC (high compatibility, moderate file size) |