We are beginning to see 60-second videos (LTX Video), although not sure about consistency, and using loras can help address the issue of character consistency. There are numerous workflows and techniques; at the moment, it is not as easy as using a single model.
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[ 4.3 ms ] story [ 18.8 ms ] threadhttps://news.ycombinator.com/item?id=44582309
This student did it for her thesis project. Maybe reading about it will help you?