Here’s one more Video Comparison between Nokia Lumia 920 & HTC One. Both phones run neck to neck when it comes to video recording capabilities & the below video justifies that.
As a layman, I feel that HTC One gives probably more natural colors/brightness & on the other hand Lumia 920 generates more contrast/details. Some will like Lumia 920 more .. Some will prefer HTC One .. both will have their own takers.
But as said, there is a lot of scope of improvement in both the phones when it comes to video recording & probably we will see that happening with future updates.