After Paramount's decision to exclusively support HD DVD last year, the director of box office smash wrote on his offi cial blog that he was "pissed off" that consumers would miss out on seeing the film in Blu-ray and that he wouldn't make a Transformers 2. But he apparently had a change of heart with his next blog post stating that on second thoughts he appreciated the affordability of the HD DVD format and might make a sequel after all.

But HD DVD was back in the director's bad books late last year, when he claimed that in fact Blu-ray was the leading and superior format and Microsoft was responsible for the format war.

"What you don't understand is corporate politics. Microsoft wants both formats to fail so they can be heroes and make the world move to digital downloads. That is the dirty secret no one is talking about. That is why Microsoft is handing out $100 million dollar checks to studios just embrace the HD DVD and not the leading, and superior Blu Ray. They want confusion in the market until they perfect the digital downloads. Time will tell and you will see the truth," Bay wrote.

Now, with Warner Bros' decision to exclusively support Blu-ray, Bay is standing behind his Blu-is-better stance, claiming  HD DVD will now "die a slow death" as a result.

Following Warner Bros' announcement Bay wrote: "Well another studio down. Maybe I was right? Blu ray is just better. HD will die a slow death. It's what I predicted a year ago. Now with Warner's down for the count with Blu Ray. That makes it easier for Wal-Mart to push Blu Ray. And whatever Wal-Mart pushes - wins. Hd better start giving out those $120 million dollars checks to stay alive. Maybe they can give me some so I can give it to my Make-A-Wish charity, just to shut me up. Have faith people Transformers will come out in Blu-ray one day! "

But the HD DVD group isn't backing down since Warner's announcement. Toshiba, a major backer of HD DVD, has since fought back by announcing that it will lower the cost of its players and increase its marketing spend on educating consumers about the format.