Messy but effective fix for OpenArt weakness
I just came up with a messy but effective workaround for a very annoying limitation in OpenArt. I'm posting this because others may find this useful, and if anyone has a better approach I'd love to know it. The underlying problem is that, at least as far as I can tell, there is no model that will accept both Consistent Character 2.0 (pretty effective) and Start/End frames (Good except for small lighting changes). You can create a video with one or the other, but not both. This was a problem for me because I wanted to seamlessly concatenate two clips with a character remaining consistent. The first of the two clips was straightforward. I just used a consistent character with Kling 2.6, a cheap but good model. Results were great, with the character remaining consistent throughout. The problem was with the second clip. Because the joint had to be invisible, I had to use the final frame from the first clip as the starting frame for the second clip. The character was, of course, in this end clip. The transition between the two clips was almost perfect, with just a very slight change in lighting. But by the end of the second clip, the character, which it could get only from the starting frame, had changed significantly, including completely different hair! This was a deal killer. I began with a naive fix. I used 'Change Face in video' and it was a disaster. The character's face kept flipping back and forth between old and new! And so began a complex and messy approach, but which ultimately worked. I took a snapshot of the final frame of the second clip. Everything was positioned exactly as I wanted it, but the face was all wrong. I used 'Change head in image'. Turns out you MUST use a face closeup as your reference; you cannot use a full body and trust the AI to find the face. This worked excellently, correctly changing the face (and hari!) and leaving everything else alone. The only small problem was that my face reference image had him looking slightly left, while in the video he must be looking straight ahead. When it swapped the face, it also changed the direction he was looking. Annoying.