720p

Was looking for some trailers in 720p for some video tests. I thought 720p is defined to be 1280 x 720 pixels, but on http://www.digital-digest.com/movies/movie_index.php I found files marked as '720p' in all kind of different resolutions:

1280 x 528

1280 x 532

1280 x 544 (seen a lot!)

1280 x 688

1280 x 692

1280 x 704

1280 x 720

...and for 1080p I found:

1920 x 796

1920 x 800

1920 x 816

1920 x 1080

Very confusing to name it 720p and 1080p, as the only common thing always seems to be the width but not the height...?!