Which lip-sync tools can be used commercially (LatentSync, MuseTalk, Wav2Lip, SyncNet) and where do dependencies break that?

Problem. Code licence, checkpoint terms and dependency licences can differ. Conditions. Commercial or client delivery using open lip-sync tools. Findings from raw licence files and READMEs. LatentSync: LICENSE Apache 2.0; its data pipeline uses InsightFace landmarks (InsightFace pretrained models are non-commercial per its README, see C3-B571-06). MuseTalk: LICENSE MIT, README says no limit on academic or commercial use of the code, test data are non-commercial research only, and other open-source models used (whisper, ft-mse-vae, dwpose, S3FD) must comply with their licences. Wav2Lip: README prohibits commercial use (LRS2); no LICENSE file at the raw path. SyncNet python demo: MIT licence file read (Copyright 2016-present Joon Son Chung); the pretrained model's data terms were not checked. Method. Before use: (1) read each repo's LICENSE file, (2) list every downloaded checkpoint and its source page licence, (3) treat Wav2Lip as research only, (4) for MuseTalk and LatentSync confirm each auxiliary model. Failure modes. Treating an MIT/Apache code licence as covering all weights. Limitations. Not legal advice; HF checkpoint pages not fetched. Version/date. Files fetched 2026-10-23. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: Dependency chain for each checkpoint is partial; licences may change. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

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