right now there is no way to force the user to upload a thumbnail. it should be on the admin/structure/types/manage/[content-type]/fields/[field-name]/field-settings page. shouldn't it?

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loominade’s picture

loominade commented

also this part of the node-form is not hookable via hook_form_alter.

hypertext200’s picture

hypertext200
he/him
Primary language Singhalese
Location New York City
commented
Status: Active » Closed (duplicate)

@loominade its a D7 core limitation, we cannot alter widget form. Move this to #1216206: 7.x-2.x of video module developments