How to set video title and thumbnail timesstamp

Hi,
Does anyone know how to set a video title and thumbnail timestamp in:


curl -X POST "https://api.cloudflare.com/client/v4/accounts/ACCOUNT_ID" \
     -H "Authorization: TOKEN" \
     --form '[email protected]/Users/kyle/Desktop/skiing.mp4

Let’s say you want the result of the thumbnail timestamp to be:
"thumbnailTimestampPct": "0.529241"

and the video title to be:

"meta":{"name":"My First Stream Video"}