Upload video poster
documentedUpload and set a poster for a VideoPress video.
POST /videos/{guid}/posterVideosno implementation yet0 runsInput
guid*
Video GUID
Video GUID of the VideoPress video
poster_path*
Poster image file path
Local path to the image to upload as poster
context
Context
Context parameter for the response (e.g., 'embed')
poster_attachment_id
Poster attachment id
Optional existing attachment id
Calls WordPress.com as you (your API key is your account); keychains.dev holds the credentials.