Thanks for reaching out. We don't have an option to convert videos that have been already uploaded into HD quality. You could try reuploading them in HD quality. Hope this helps.
@TeamYouTube i have been going through my videos doing thumbnails and i have noticed that from a time period of Oct/12/16 and Dec/7/16 around166 videos of mine are not in HD. All gameplay videos. Was wondering if there is anyway to make them HD as they are all blurry?
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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