What's the maximum video length I can extend?

You can add up to 20 seconds per run, in either direction (start or end). For longer extensions, chain multiple runs — each new run extends the previous output. <a href="/model/grok-imagine-extend-video">Grok Imagine Extend Video</a> has similar limits but slightly different motion characteristics, so it's worth testing both for long-form content.

Can I extend video clips with audio?

The model extends visual frames only — audio is preserved on the original portion but the extended portion has no sound. To add matching audio to the extended segment, you can use a video-to-audio model on JAI Portal like <a href="/model/kling-video-create-voice">Kling Video Create Voice</a> or generate fresh audio with <a href="/model/minimax-music-2-6-generator">MiniMax Music 2.6 Generator</a> for soundtrack.

LTX 2.3 Extend Video

Add 1-20 seconds to the start or end of videos with smooth motion. Great for loops and longer sequences.

"Continue the motion smoothly"

Input Video

@Video1

Generated Video

Generated

Upload your video and extend it in seconds

8,500+ videos generated this month

📄 About LTX 2.3 Extend Video

LTX 2.3 Extend Video is a cutting-edge AI-powered video extension tool designed to revolutionize how creators, editors, and marketers enhance their video content. Whether you need to extend the beginning or end of a video by up to 20 seconds, this model delivers smooth, context-aware motion continuation that preserves the natural flow of your footage. Powered by advanced machine learning, LTX 2.3 analyzes up to 20 seconds of reference frames to generate seamless extensions that match the original video's style, lighting, and motion dynamics. With its intuitive interface, users simply upload a video, select the desired extension duration (from 1 to 20 seconds), choose whether to extend at the start or end, and optionally add a custom prompt to guide the motion. The AI then processes the input, generating extended sequences that feel organic and professionally edited. The context parameter allows precise control over how much of the original footage is used for reference, ensuring the most coherent and visually consistent results possible. LTX 2.3 Extend Video is ideal for a wide range of scenarios. Content creators can easily create looping backgrounds, extend cinematic shots, or adjust timing for social media platforms without losing quality or introducing awkward transitions. Editors working on commercials, music videos, or YouTube content will find it invaluable for lengthening sequences to fit voiceovers or pacing requirements. Marketers can repurpose existing brand videos by extending intros or outros, making content more versatile and engaging for multiple channels. The technology behind LTX 2.3 leverages sophisticated deep learning algorithms that understand both the visual and motion context of the input video. This means the extended segments are not just static or repetitive, but instead offer fluid movement and visual continuity. The model supports a variety of video formats and offers flexible input options, including file uploads and URL links, making it convenient for any workflow. With a pay-as-you-go credit system, users have full control over their usage, paying only for what they need without long-term commitments. This makes LTX 2.3 Extend Video accessible for both professionals and hobbyists looking for high-quality video editing solutions. Whether for creative storytelling, commercial production, or social media engagement, this AI video extension tool empowers users to push the boundaries of their content with minimal effort and maximum impact.

✨ Key Features

Extend video footage by 1 to 20 seconds at either the start or end with smooth, AI-generated motion.

Advanced context-aware generation utilizes up to 20 seconds of reference frames for seamless blending.

Customizable prompts allow users to guide the motion and style of the extended segment.

Flexible input options support both file uploads and direct video URLs.

Optimized for looping content, sequence lengthening, and creative shot extensions.

User-friendly controls for duration, context, and extension mode, with real-time processing.

Pay-as-you-go credit system ensures accessibility and cost-effectiveness for all users.

💡 Use Cases

⚡Creating seamless video loops for backgrounds or digital displays.

⚡Extending the duration of cinematic shots for film and video production.

⚡Adjusting video length to fit specific social media or advertising requirements.

⚡Enhancing music videos with longer visual sequences to match audio tracks.

⚡Lengthening intros or outros for branded content and presentations.

⚡Smoothing transitions between video clips in editing workflows.

⚡Rescuing or repairing cut-off footage by intelligently generating missing segments.

🎯 Best For

🎯 Video editors, content creators, marketers, and filmmakers seeking effortless, high-quality video extensions.

👍 Pros

✓Delivers smooth, natural-looking video extensions with minimal effort.

✓Highly customizable with control over duration, mode, and context.

✓Supports both uploads and URLs for easy integration into workflows.

✓Reduces manual editing time and complexity for extending video sequences.

✓No need for advanced editing skills—AI handles motion and blending seamlessly.

⚠️ Considerations

△Maximum extension limited to 20 seconds per operation.

△Results may vary with highly complex or abstract video footage.

△Requires internet connection for processing and output retrieval.

📚 How to Use LTX 2.3 Extend Video

Upload your video file or paste a direct video URL into the input field.

Select the desired extension duration (from 1 to 20 seconds) using the slider.

Choose whether to extend the video at the start or end using the mode selector.

Optionally, enter a prompt to guide the motion or style of the extended portion.

Adjust the context parameter if you want to control how much of the original video is referenced.

Submit your request and download the extended video once processing is complete.

💡 Pro Tips for LTX 2.3 Extend Video

★

Use the natural ending frame as your anchor LTX 2.3 Extend Video uses the last frame of your input as the seed for the extension. If your video ends mid-action, the extension may continue that action awkwardly. Trim your input to a stable resting frame for smoother continuity. Grok Imagine Extend Video handles abrupt cuts slightly better.

★

Extend in 5-second increments Although you can extend up to 20 seconds in one pass, results stay most coherent at 5-second increments. Run the model twice for 10 seconds total instead of asking for 10 directly — the second pass uses the first's output as a stable anchor. Cheaper credit usage and better motion consistency.

★

Match the lighting in your prompt If the source video is shot in a specific environment (golden hour, night, neon), reinforce it in your prompt: 'continue golden hour lighting, warm tones'. The AI tries to match style, but explicit hints prevent drift. Kling O1 Edit Video is more forgiving on style consistency.

★

Pick prepend or append based on the story Adding 1-3 seconds before the video creates an entrance moment ('how the scene started'). Adding to the end gives a natural fade-out. Most users append, but for product reveals or narrative cuts, prepending is underused — try it for B-roll polish.

★

Lower resolution = more credits saved Extending 4K video costs significantly more than 720p. For social media use cases (Instagram, TikTok), 720p is plenty and the extension cost drops by ~60%. Upscale the final result with Topaz Video Upscaler if you need higher resolution after extension.

★

Combine with a retake to fix the seam Sometimes the boundary between original and extended frames has subtle motion drift. Run a quick retake on just the seam segment using LTX 2.3 Retake Video for a polished final result. The combination is much cleaner than either model alone.

Ready to try LTX 2.3 Extend Video?

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Frequently Asked Questions

The model uses advanced AI algorithms that analyze up to 20 seconds of reference frames from your original video. This context-aware approach ensures the generated extension matches the original motion and visual style for seamless continuity.

Yes, LTX 2.3 Extend Video is perfect for creating looping content. By extending the start or end with smooth transitions, you can easily generate loops that appear continuous and natural.

You can upload your video file directly or provide a video URL. The tool supports a wide range of video formats, making it flexible for various workflows.

Pricing varies by model and is based on a pay-as-you-go credit system. This allows you to pay only for the resources you use, with no long-term commitments.

No advanced technical or editing skills are needed. The interface is user-friendly, and the AI handles the complex motion extension, making it accessible to both professionals and beginners.

You can add up to 20 seconds per run, in either direction (start or end). For longer extensions, chain multiple runs — each new run extends the previous output. Grok Imagine Extend Video has similar limits but slightly different motion characteristics, so it's worth testing both for long-form content.

LTX 2.3 Extend Video does a strong job copying lighting, color grade, and camera motion from the source. However, abrupt scene changes (a person walking out of frame mid-extension) can cause continuity issues. For complex scene transitions, Kling O1 Edit Video handles them more gracefully thanks to its scene-understanding model.

The model extends visual frames only — audio is preserved on the original portion but the extended portion has no sound. To add matching audio to the extended segment, you can use a video-to-audio model on JAI Portal like Kling Video Create Voice or generate fresh audio with MiniMax Music 2.6 Generator for soundtrack.

Runway's Gen-3 Extend has similar functionality but charges per-extension as part of a monthly plan. LTX 2.3 Extend Video on JAI Portal uses pay-per-credit, so for occasional use it's significantly cheaper. Quality is comparable for most use cases; Runway has slightly better camera-motion preservation, while LTX leads on subject consistency.

Yes — outputs from LTX 2.3 Extend Video and other JAI Portal models include full commercial rights. You can use extended clips in advertising, social media, marketing, or paid content without separate licensing fees. No watermarks on paid generations.

⚖️ How LTX 2.3 Extend Video Compares

LTX 2.3 Extend Video is the most reliable pick for cinematic or narrative video extension where motion continuity matters most. Grok Imagine Extend Video is a strong budget alternative — slightly less polished but faster and cheaper, ideal for social media B-roll. For tricky transitions or scenes that need more semantic understanding (people, objects, complex actions), Kling O1 Edit Video handles them better thanks to its scene-aware engine. LTX 2.3 Retake Video is a useful companion when the extension's seam needs a quick polish. All share the same credit pool on JAI Portal — start with 10 free credits, run a 5-second test extension to see which model fits your footage style, then scale up. Get started free.

LTX 2.3 Extend Video

Input Video

Generated Video

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