How to set the thunbnail for special video.

[guocong zheng]

I know we can set the thumbnail by this api https://developers.google.com/youtube/v3/docs/thumbnails/set.   But I found an issue that we can't set the thunbnail of video which is  1280*1280.  How cat do this by api?

Api response:

{"etag":"kTSSkxPyA4FEEWFrghA48oJ6HqE","items":[{"default":{"height":90,"url":"https://i.ytimg.com/vi/Vt1-pwS7K4U/default.jpg","width":120},"high":{"height":360,"url":"https://i.ytimg.com/vi/Vt1-pwS7K4U/hqdefault.jpg","width":480},"maxres":{"height":720,"url":"https://i.ytimg.com/vi/Vt1-pwS7K4U/maxresdefault.jpg","width":1280},"medium":{"height":180,"url":"https://i.ytimg.com/vi/Vt1-pwS7K4U/mqdefault.jpg","width":320},"standard":{"height":480,"url":"https://i.ytimg.com/vi/Vt1-pwS7K4U/sddefault.jpg","width":640}}],"kind":"youtube#thumbnailSetResponse"}}

Screenshot for video:

[Google Ads API Forum Advisor]

Hi,

Thank you for reaching out to the Google Ads API support team.

Based on the provided information, it appears that your concern is more specific to the thumbnail of the videos in the YouTube API. Since your issue is related to the YouTube API, I would recommend reaching out to the YouTube Product support team for further assistance, as they are better equipped to address your concerns. I would like to emphasize that our team can only provide assistance with the technical issues/concerns related to the Google Ads API. 

I hope this helps! Feel free to get back to us in case of any further queries related to the Google Ads API.

 

Thanks,
 

Google Ads API Team

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[2025-10-28 06:18:19Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01vRxiF:ref" (ADR-00336712)