L-RoPE (Labeled Rotary Position Embedding) is the core technology innovation of MultiTalk, which mainly solves the audio-video binding problem in multi-role scenarios:
The technical challenge
The traditional method is prone to occur with multiple audio inputs:
1. Character and audio mismatch
2. Lip movements not synchronized with speech
3. Poor coordination of interactive movements
prescription
- Tag embedding mechanism: Assign unique tags to each audio stream and video role
- Rotary position code: Establish precise correspondence in feature space
- dynamic binding: Adjusting spatial and temporal correlations between audio and visual features in real time
actual effect
Tests show that this technique can improve the synchronization accuracy by about 351 TP3T, and still maintain more than 901 TP3T lip synchronization accuracy in multi-person cross-talk scenarios. Compared with the traditional CLIP method, L-RoPE reduces the error rate by 601 TP3T in long video scenes.
This answer comes from the articleMultiTalk: an audio-driven tool for generating videos of multiplayer conversationsThe
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