Wav2lip Gui Fixed May 2026

| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "No face detected" | Video has extreme angles or dark lighting | Edit video to keep face forward. Increase face_det_batch_size . | | Green/artifacts on mouth | Outdated GPU drivers | Update NVIDIA drivers. In GUI settings, disable "FP16" (half precision). | | Audio out of sync | Variable frame rate (VFR) video | Convert video to Constant Frame Rate using HandBrake before importing. | | GUI crashes on start | Missing Visual C++ Redistributables | Install "VC_redist.x64.exe" from Microsoft. | | Output video is slow motion | Incorrect FPS setting | Match output FPS to original video FPS (check source file properties). |

Many CLI tools require you to write loops to process multiple files. A robust GUI often includes a "Batch Mode" where you can queue up 50 videos and 50 audio files and let the AI run overnight. wav2lip gui