The Adobe Media Encoder folder in the Presets folder contains just the presets for the media encoder. You need to make sure the the media encoder is installing. I do I also uninstalled Apple QuickTime from my windows machine. Though I have the Adobe Presets for QuickTime I do not even have a QuickTime encoding option in render video. I see a DynamicLinkMediaServer folder in Photoshop and in Photoshop System Info installed components so of the dll in that DynamicLinkMediaServer tree are installed. Other File names in the tree look like they encoders for mpeg4 and QuickTime etc.