Extend R2V for longer videos

Background: Video generation models based on diffusion mechanisms typically have limitations on the temporal length of the sequences they can effectively generate, often due to constraints in the underlying architecture or training data.

Question / Future Work: Future work should focus on extending the Reference-to-Video (R2V) generation capability to produce longer videos, overcoming the current restriction, which is noted to be limited to 81-frame videos due to the underlying foundation model used.