You don't have to get the HD version of Elgato's turbo.364 to add higher resolution videos to YouTube.
Use the
Apple iPhone setting on your turbo.264 to convert your video.
The turbo's AppleTV settings create a higher resolution .mp4 file - just the sort that YouTube likes you to upload...
Apple TV Video:
H.264 Main profile, 3Mbps max, 800 x 600 max, 30 fps max.
Audio: AAC-LC, stereo, 128 Kbps, 48 kHz.
(Note: If the source movie is larger than 800 x 600, it will be scaled to fit within 800 x 600, preserving aspect ratio. Resolution is maintained if 800 x 600 or smaller. Frame rate is maintained when 30 fps and smaller.)
When using the Apple TV export, HDTV content will not retain its original resolution. HDTV content will be exported as 800 x 448.
When using the Apple TV export, SDTV content will retain its original resolution. 720 x 480 NTSC content will be exported as 720 x 480, for example.
Then upload it via your YouTube account page -
do not use the built in YouTube options.
The uploaded video will then appear as a HQ version on YouTube - after it is processed.
Viewers will see the HQ version whenever their bandwidth allows and, when it doesn't, as a standard quality version.