Here is a little tip of how to upload/download HD from Snapchat Spectacles.
1. Press “GET HD” in Spectacles tab.
2. Select videos that you want to import.
3. Press “GET HD” button.
4. Enable WiFi.
5. Connect to “Spectacle’s WiFi”.
6. Return to Snapchat.
7. HD will be import to your Snapchat.