Side by side
KeySync vs X-Dub
Both stand on ai video lip sync tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid Web
Choose KeySync if you need a free, open-source tool for synchronizing existing video with new audio and value its masking options. Look elsewhere if your demo workflow needs videos longer than 6 seconds or you cannot meet the listed local prerequisites.
Visit KeySync Free plan Self-hosted
X-Dub offers local, open-source visual dubbing with broad character support and downloadable weights. Its hardware demand, single-person restriction, slower public release, and possible visual artifacts should shape expectations before setup.
Visit X-DubThe facts
| KeySync | X-Dub | |
|---|---|---|
| Free plan | Not published | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Self-hosted |
| Lowest paid plan | Not published | Not published |
| Plans published | None | None |
| Maker | Not published | Not published |
| Website | antonibigata.github.io | github.com |
| On ai video lip sync tools | #26 of 28 | #22 of 28 |
KeySync: what it does well
- Free and open source under Apache-2.0.
- Online demo creates synchronized videos from uploaded video and audio.
- Includes masking approaches for expression leakage and facial occlusions.
- Provides scripts for video, audio, and face-crop preparation.
- Includes separate training scripts for keyframe and interpolation models.
What to know first
- The online demo accepts videos only up to 6 seconds.
- Local installation lists a CUDA-compatible GPU, Python 3.11, and Conda as prerequisites.
X-Dub: what it does well
- Free and open-source
- Supports arbitrary-size input videos
- Works with stylized and AI characters
- Downloadable pretrained weights
- Community ComfyUI nodes available
What to know first
- Requires about 21 GB VRAM
- Single-person videos only
- Possible flicker and identity drift
- Cropping may jitter during fast movement
Alternatives to KeySync Alternatives to X-Dub The whole list