Ltx 2.3 add sound and extend of a silent Wan video.

This video uses a modified version of arkinson's workflow that allows you to extend silent videos and seamlessly add sound to the whole video. NOTE: The workflow is embedded in the PNG only.
Original workflows:
https://civitai.com/models/2354193?modelVersionId=2808422
Original videos:
https://civitai.com/images/128344256
https://civitai.com/images/128167478
https://civitai.com/images/127452180