{"work":{"id":"6162e20b-7f90-4812-8c9b-a2423c67be80","openalex_id":null,"doi":null,"arxiv_id":"2512.04677","raw_key":null,"title":"Live Avatar: Streaming Real-time Audio-Driven Avatar Generation with Infinite Length","authors":null,"authors_text":null,"year":2025,"venue":"cs.CV","abstract":"Audio-driven avatar interaction demands real-time, streaming, and infinite-length generation -- capabilities fundamentally at odds with the sequential denoising and long-horizon drift of current diffusion models. We present Live Avatar, an algorithm-system co-designed framework that addresses both challenges for a 14-billion-parameter diffusion model. On the algorithm side, a two-stage pipeline distills a pretrained bidirectional model into a causal, few-step streaming one, while a set of complementary long-horizon strategies eliminate identity drift and visual artifacts, enabling stable autoregressive generation exceeding 10000 seconds. On the system side, Timestep-forcing Pipeline Parallelism (TPP) assigns each GPU a fixed denoising timestep, converting the sequential diffusion chain into an asynchronous spatial pipeline that simultaneously boosts throughput and improves temporal consistency. Live Avatar achieves 45 FPS with a TTFF of 1.21\\,s on 5 H800 GPUs, and to our knowledge is the first to enable practical real-time streaming of a 14B diffusion model for infinite-length avatar generation. We further introduce GenBench, a standardized long-form benchmark, to facilitate reproducible evaluation. Our project page is at https://liveavatar.github.io/.","external_url":"https://arxiv.org/abs/2512.04677","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-07-01T07:05:29.125000+00:00","pith_arxiv_id":"2512.04677","created_at":"2026-05-10T09:03:26.261849+00:00","updated_at":"2026-07-01T07:05:29.125000+00:00","title_quality_ok":true,"display_title":"Live Avatar: Streaming Real-time Audio-Driven Avatar Generation with Infinite Length","render_title":"Live Avatar: Streaming Real-time Audio-Driven Avatar Generation with Infinite Length"},"hub":{"state":{"work_id":"6162e20b-7f90-4812-8c9b-a2423c67be80","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":13,"external_cited_by_count":null,"distinct_field_count":2,"first_pith_cited_at":"2026-02-14T08:32:38+00:00","last_pith_cited_at":"2026-06-22T06:41:17+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-07-01T17:41:26.071926+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":4},{"context_role":"baseline","n":1}],"polarity_counts":[{"context_polarity":"background","n":3},{"context_polarity":"baseline","n":1},{"context_polarity":"unclear","n":1}],"runs":{},"summary":{},"graph":{},"authors":[]}}