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Clip Editor

Clip Editor

All the tools you need to edit, enhance, and polish individual video clips.

The Clip Editor brings together all clip-level editing tools in one place. AI-powered modifications, visual effects, audio tools, and technical enhancements for individual video clips.

Looking to combine multiple clips into a project? Use the Video Project Editor instead.

In this article

How to open the Clip Editor

Supported models

You can choose from three AI models when modifying your video. Each one is designed for different creative needs:

Tip

Only Runway Aleph supports reference images to influence visual style or content.

Modify

Change specific parts of a video clip using a text prompt. Describe what you want to change and the AI applies it to the clip while keeping the rest intact.

  1. Open the clip in the Clip Editor

    Select the clip you want to edit.

  2. Select Modify

    Choose the Modify tool from the toolbar.

  3. Describe the change

    Write what you want to change in the prompt field. For example: change the sky to sunset, add snow on the ground, make the car red.

  4. Pick your model

    Choose between Auto, Runway Aleph or Grok.

  5. Choose resolution

    Select a target resolution (480p, 720p).

  6. Click Generate

    The AI applies the modification to your clip.

Extend

Use Extend to increase the duration of your video. This is especially useful if you want to continue the scene beyond its original length or build toward a more complete visual sequence.

  1. Open the clip in the Clip Editor

    Select the clip you want to extend.

  2. Select Extend

    Choose the Extend tool.

  3. Set the duration

    Choose how many additional seconds to add.

  4. Click Generate

    The AI generates new content that continues seamlessly from the end of your clip.

Trim

Cut your clip to exactly the length you need.

  1. Open the clip in the Clip Editor

    Select the clip you want to trim.

  2. Select Trim

    The trim interface shows your clip on a timeline.

  3. Set start and end points

    Drag the left handle to set a new start point and the right handle to set a new end point.

  4. Apply

    Click Apply to save the trimmed version.

Color Grading

Apply cinematic color looks to your video using LUT presets. Transform the mood and tone of a clip with one click.

  1. Open the clip in the Clip Editor

    Select the clip you want to color grade.

  2. Select Color Grading

    Browse the available LUT presets.

  3. Preview and apply

    Click a preset to preview the look on your clip. Click Apply when you find one you like.

Smooth

Make motion look more fluid and natural. Smooth uses AI frame interpolation to add intermediate frames, reducing jitter and making movement feel more polished.

  1. Open the clip

    Select the clip you want to smooth.

  2. Select Smooth

    Choose the Smooth tool.

  3. Click Generate

    The AI processes the clip and produces a smoother version.

Anti-Shake

Stabilize shaky footage automatically. Anti-Shake compensates for camera movement and vibration, producing a steadier result.

  1. Open the clip

    Select the shaky clip.

  2. Select Anti-Shake

    Choose the stabilization tool.

  3. Click Generate

    The AI analyzes the motion and produces a stabilized version.

Motion Shake

The opposite of Anti-Shake. Add dynamic camera shake to a clip for energy and impact. Useful for action sequences, music videos, or any content that needs a raw, handheld feel.

  1. Open the clip

    Select the clip.

  2. Select Motion Shake

    Choose the shake tool.

  3. Adjust intensity

    Set how much shake to add.

  4. Click Generate

    The AI adds camera shake to your clip.

Sound FX

Generate AI sound effects that match your video content. Describe the sound you want and the AI creates an audio track that syncs with the visual action.

  1. Open the clip

    Select the clip you want to add sound to.

  2. Select Sound FX

    Choose the Sound FX tool.

  3. Describe the sound

    Write what you want to hear. For example: footsteps on gravel, rain on a window, crowd cheering.

  4. Click Generate

    The AI generates a sound effect track and attaches it to your clip.

Audio Isolation

Extract or remove specific sounds from your video. Audio Isolation separates the audio into components (speech, music, background noise) so you can keep what you want and remove the rest.

  1. Open the clip

    Select a clip that has audio.

  2. Select Audio Isolation

    Choose the Audio Isolation tool.

  3. Choose what to isolate

    Select which audio components to keep or remove.

  4. Click Generate

    The AI processes the audio and produces a version with your selected components.

Lip Sync

Synchronize a character's mouth movements to spoken audio. Lip Sync within the Clip Editor works on videos you have already generated and is part of the post-production workflow.

  1. Open the clip

    Select a clip with a visible character face.

  2. Select Lip Sync

    Choose the Lip Sync tool.

  3. Provide audio

    Upload an audio file or use text-to-speech to generate a voice track.

  4. Click Generate

    The AI syncs the character's lip movements to the audio.

For creating speaking clips from scratch (starting from an image or video), see Speak. Both tools complement each other: Speak creates new speaking clips, Lip Sync enhances existing ones.

Video Upscaler

Enhance the resolution and quality of your clip. The Video Upscaler inside the Clip Editor supports multiple resolution targets and quality settings.

  1. Open the clip

    Select the clip you want to upscale.

  2. Select Video Upscaler

    Choose the upscaler tool.

  3. Choose resolution

    Select a target resolution (720p, 1080p, 2K, 4K).

  4. Configure settings

    Adjust FPS and quality options if available.

  5. Click Upscale

    The AI processes your clip at the higher resolution.

Video Upscaler supports input formats: MP4, MOV, AVI, WebM, MKV. Maximum input duration: 8 seconds.

For the standalone Magnific Video Upscaler with additional modes and presets, see Magnific Video Upscaler.

Choosing a Topaz enhancement model

When you select Topaz as your upscaling model, you’ll be able to choose from two types of models:

You can combine one of each to get the result you need. For example:

Proteus + Apollo for a slow-motion video with higher frame rate, or Artemis + Chronos for a standard video that needs smoother motion.

Enhancement models

Frame interpolation models

Tips and best practices

Edit clips before assembling a project. Use the Clip Editor to polish individual clips first (color grading, stabilization, sound effects), then bring them into the Video Editor for assembly.

Use Modify for targeted changes. Instead of re-generating an entire clip, use Modify to change specific elements. This saves time and credits.

Extend to get more from a good clip. If you generated a clip you love but it is too short, Extend continues the scene naturally without re-generating from scratch.

Color grade after other edits. Apply color grading as one of the last steps. Changes from Modify, Extend, or Smooth may affect the overall tone.

Try Anti-Shake on AI-generated clips. Some AI models produce slight jitter. Anti-Shake can clean this up and make the motion feel more natural.

Be specific with Sound FX descriptions. "Heavy rain on a tin roof with distant thunder" gets better results than "rain sound". The more detail you provide, the closer the match.

Use Audio Isolation to clean up speech. If your clip has background noise interfering with dialogue, Audio Isolation can separate the speech from the noise.

Upscale last. Get all your edits right first, then upscale for maximum quality. Upscaling before editing wastes credits if you need to make changes later.