Automating MetaHuman Lip Sync Video Generation via Command Line in Unreal Engine 5.5

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We’re looking to automate a pipeline for generating lip-synced talking head videos using MetaHuman and Audio Driven Animation in Unreal Engine 5.5. We have the MetaHumans set up, and we need to:

• Start Unreal Engine via command line
• Pass an audio file
• Randomly select from 5 moving head animations (so they don’t all look the same)
• Render the output at 256x256 resolution, all without human involvement.

Can anyone advise on the best approach to automate this? We found these resources, but need further guidance:

• Run headless Unreal Editor with Python Script
• Command-line rendering with Movie Render Queue

Thanks for any help!