The HD-A1 (HD-DVD) player is compatible with:

HD DVD, HD DVD-R, DVD, DVD-R/-RW/-RAM, CD, CD-R/-RW

Some report using Ulead DVD Movie Factory 5 or Apple DVD Studio Pro 4 to burn HD content in HD-DVD format on DVD-R.

The DVD-R then plays and is recognized as HD-DVD.

Still would need an HD source to burn to the DVD-R and the size of the DVD-R disk would be a limitation.