The photos are posted in max quality, after the first click give the lightbox viewer a second to load them
The videos are encoded in the Webm format, Chrome or Firefox browsers works for sure, Safari is hit and miss with a known bug.
Time lapse with tunes. First one is in Quicktime format, should be apple friendly but large file takes a sec to load. Second is the same video but in Webm format, smaller should load easily.