When a thumbnail for a video is not properly generated by Youtube, Vidigami is unable to embed that video in the system. [See Image Below] To correct this problem, simply assign a thumbnail to the video in Youtube [See Instructions Below]. Vidigami is unable to automatically assign a thumbnail to this video because it’s a file that is stored outside the system on Youtube.
To assign a thumbnail :
- Sign in to YouTube.
- Go to Creator Studio > Video Manager.
- Next, to the video, click Edit.
- On the left of the preview screen, choose a thumbnail.
- Click Save changes.
Youtube's official tutorial