I’m working on a commercial project in Unreal Engine 5.6 using Metahumans and the Live Link feature for facial animation. I ran into a consistent issue when rendering with Movie Render Queue. Whenever I try to render the animation with audio included, the render freezes after a few frames. However, if I remove the audio from the Movie Render Queue and render without it, everything works fine.
The issue is reproducible every time, and I’ve confirmed that the audio file is a standard .wav format (48kHz, 16-bit PCM), so the file type isn’t the problem. For now, I’m rendering without audio and syncing it in post as a workaround.
It seems like a bug related to the way Movie Render Queue handles audio when Live Link facial animation is involved. Just sharing this in case anyone else runs into the same issue or has found a better solution.
Let me know if there’s a proper fix for this.