Playing Vimeo in HD by default

If you would like to force Vimeo to always serve HD videos, you'll need to have a Vimeo Plus or Pro account. Log into your Vimeo account and then click ME > MY SETTINGS > VIDEOS > FILE SETTINGS

In the File Settings, click both:

1. "Make my videos compatible with mobile devices"
2. "Always play my videos in HD, when possible"

When an option opens, you can click to "Also, apply to all existing videos."

Check it, click on SAVE AS DEFAULT button.