There are converters that go from HDMI to Composite or Component
video with audio.
View page
S-video is better than the composite video when output to a
television
View page
Composite video out has better performance than S-Video.
View page
Composite video signals are used with standard definition video.
There is no composite encoding system for HD signals. As 720p,
1080i and 1080p are all HD signals, they cannot be carried on a
composite signal.