Harmy said:

Well, my new BD player plays MKVs and it plays them from DVD without problems. The thing is that the MKV will be around 15GB, so it won't fit on a DVD but I can also connect an external USB HDD to y BD player and it plays MKVs from that too.

Alternatively, you could split the movie over two DVD9s. In MKV Merge, you can "link" the files, so when they're in the same folder, they simply play as one file, so if you wanted to play it from an HDD or burn to a BD you should have an uninterupted viewing and if you, like me, don't mind switching discs midway, you can burn it to two DVDs.

Cool, thanks for the tips. I may get a Blu-Ray burner in the near future anyhow, so that would all be a moot point, but I don't mind switching discs either