Is there a way to force a high quality THUMBNAIL for YouTube?
My videos are of very high quality and once they start streaming they run fine in 720p, however the thumbnail for the video is of variable quality - sometimes it's high, other times it's really blurry.
Is there a way of forcing a high quality thumbnail? I've found this in the API docs - http://code.google.com/apis/youtube/2.0/reference.html#youtube%5Fdata%5Fapi%5Ftag%5Fmedia:thumbnail but it doesn't detail how to use the media tag.