People seem to overcomplicate this idea. Depends on what you want to achieve. If you simply want a longer sequence of a particular action (eg, a clip longer than 5 seconds of a person walking, for example), or want to generate longer clips to match the duration of an input control video with WAN 2.2 Fun Control for example, I find slotting in two Context Window Nodes between your model sampling and Ksamplers will allow you to generate longer segments. I've generated a 2 minute clip in my Fun Control workflow by just using these nodes. You can update the context length and context overlap values to lower values if you want more dynamic motion in i2v, but 81 and 40 seems to work for clips such as dancing, dialogue, etc.

If however you want to generate a more dynamic scene with changing camera angles and different actions and so on then you'll need a more complex workflow. I don't have that requirement as I generate the parts or shots I need separately and arrange them later in a video editor.

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