# Video-to-Video Models

Edit, upscale, restyle, or manipulate existing videos. Includes lipsync, motion control, upscaling, background replacement, and composition utilities.

**9 models documented in this category.**

| Model | Slug | Creator | Summary |
|---|---|---|---|
| [Wan-2.2 Animate Replace (14B)](../skills/fal-ai__wan__v2.2-14b__animate__replace.md) | `fal-ai/wan/v2.2-14b/animate/replace` | Alibaba Cloud (Tongyi Lab) | Unified AI model for character replacement in existing videos with high motion fidelity and temporal consistency. |
| [SeedVR2 Video Upscale (ByteDance)](../skills/fal-ai__seedvr__upscale__video.md) | `fal-ai/seedvr/upscale/video` | ByteDance Seed | A high-performance, one-step video restoration model by ByteDance that upscales video to 4K with exceptional temporal consistency. |
| [FFmpeg API Compose](../skills/fal-ai__ffmpeg-api__compose.md) | `fal-ai/ffmpeg-api/compose` | FAL.ai | A programmatic video composition tool that combines multiple video, audio, and image tracks using the FFmpeg engine. |
| [Ffmpeg Api Merge Audio-Video](../skills/fal-ai__ffmpeg-api__merge-audio-video.md) | `fal-ai/ffmpeg-api/merge-audio-video` | FFmpeg (Open Source) / FAL.ai (API Provider) | A high-performance cloud API for merging audio tracks into video files using FFmpeg. |
| [Kling Video-to-Audio](../skills/fal-ai__kling-video__video-to-audio.md) | `fal-ai/kling-video/video-to-audio` | Kuaishou Technology (Kling AI) | Generates context-aware, synchronized audio soundtracks and sound effects for existing silent videos. |
| [Sync Lipsync v2 Pro](../skills/fal-ai__sync-lipsync__v2__pro.md) | `fal-ai/sync-lipsync/v2/pro` | Sync Labs | Studio-grade AI lip synchronization model that uses diffusion-based super-resolution to align video mouth movements with new audio tracks wh |
| [sync-3 Lipsync](../skills/fal-ai__sync-lipsync__v3.md) | `fal-ai/sync-lipsync/v3` | Sync Labs | A studio-grade, 16B-parameter lipsync model that provides 4K native output and handles extreme angles and obstructions. |
| [Topaz Video Upscale](../skills/fal-ai__topaz__upscale__video.md) | `fal-ai/topaz/upscale/video` | Topaz Labs | Professional-grade AI video enhancement and upscaling for high-fidelity restoration, frame interpolation, and noise reduction. |
| [VEED Lipsync](../skills/veed__lipsync.md) | `veed/lipsync` | VEED.io | A high-performance video-to-video model that remaps speaker lip movements to match any provided audio track with natural facial dynamics. |

## When to pick what

See each individual model's skill file for full prompting tips, parameter tuning, and alternatives.