I linked a sample file from imaging-resource.com. It is an unaltered mts sample 1280x720 60p. It shows very bad compression artefacts on high detail areas the roof, the grass, the lady's hair:
http://www.imaging-resource.com/PRODS/DMCGH1/FULLRES/zvid_AVCHD_1280x720_00013.MTS
On Vimeo I saw...