Diff2Lip vs LipDub

Diff2Lip is a free, open-source Linux and self-hosted project that synchronizes speech with face videos using an audio-conditioned diffusion model. It accepts speech and face-video material and generates lip-synced video while aiming to preserve the identity shown in source frames. The repository includes inference scripts for audio-video pairs and for a single video. Cross mode drives a video with an audio source; reconstruction mode drives the video's first frame with audio. The project lists movies, education and virtual avatars as applications, with video conferencing described as a possible future use. Diff2Lip is not real time yet. Reported evaluations use the VoxCeleb2 and LRW datasets, and the repository identifies the work as a WACV 2024 paper. Setup instructions use Python 3.9, FFmpeg 5.0.1 and the requirements file. Inference supports one or more GPUs through NUM_GPUS, with values above one running distributed generation. A Google Colab notebook is linked for trying it.

LipDub localizes videos by dubbing them into other languages while keeping the person on camera and synchronizing their lips. The workflow covers uploading video, translating and refining a transcript, choosing or cloning a voice, lip syncing, and exporting localized versions. It supports 80+ languages out of the box; user-provided audio can extend use to other languages, dialects, accents, or fictional languages. Listed tools include lip sync, audio dubbing, a translation editor, stock voices, and instant voice cloning. The free Seed plan allows one minute of video at 1080p and adds a watermark. Core costs $29 a month and supports videos up to 10 minutes; Growth allows up to 60 minutes, and Scale up to 120 minutes with 4K output and API access. Enterprise offers unlimited length at custom pricing. The pricing FAQ says the platform works best with simple productions and broadcast-grade footage where the speaker is clearly visible. Paid plans include unlimited seats and concurrent jobs, while security and support options vary by plan.