lightricks/ltx-2.3-fast ❓🖼️📝✓ → 🖼️

⭐ Official ▶️ 10.6K runs 📅 Mar 2026 ⚙️ Cog 0.16.12 📄 Paper ⚖️ License

image-to-video image-to-video-with-audio text-to-video-with-audio

About

Lightning-fast video generation with portrait support, camera controls, and synchronized audio. Up to 20 seconds at 1080p, 4K at 50 FPS.

Example Output

Prompt:

"A drone shot flying over mountains"

Output

Performance Metrics

20.13s Prediction Time

20.15s Total Time

All Input Parameters

{
  "fps": 25,
  "prompt": "A drone shot flying over mountains",
  "duration": 6,
  "resolution": "1080p",
  "aspect_ratio": "16:9",
  "camera_motion": "dolly_in",
  "generate_audio": true
}

Input Parameters

fps Default: 25: Frame rate in frames per second
image Type: string: First frame image for image-to-video generation
prompt (required) Type: string: Text prompt describing the video to generate
duration Default: 6: Duration of the video in seconds. Durations longer than 10 seconds are only available with 1080p resolution at 24 or 25 FPS.
resolution Default: 1080p: Resolution quality of the generated video. Only 1080p is supported for audio_to_video, retake, and extend tasks.
aspect_ratio Default: 16:9: Aspect ratio of the generated video
camera_motion Default: none: Camera motion effect to apply to the generated video. Use 'none' for no camera motion.
generate_audio Type: booleanDefault: true: Generate audio for the video. Used for text_to_video and image_to_video tasks.
last_frame_image Type: string: Last frame image for image-to-video generation. When provided, the video interpolates between the first frame and this last frame.

Output Schema

Output

Type: string • Format: uri

Example Execution Logs

Using resolution: 1920x1080 (16:9 @ 1080p), 25 FPS
Generating video from text...
Generated video in 19.5sec
Generated video: 1920x1080, 6.09s, 302,745,600 total pixels

Version Details

Version ID: 6e44d7e6b51d045abf444dbac11bafd94a053a689b4529793ce997e0110e473e
Version Created: March 5, 2026

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