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The Runway First-Last-Frame to Video node generates videos by uploading first and last keyframes along with a text prompt. It creates smooth transitions between the provided start and end frames using Runway’s Gen-3 model. This is particularly useful for complex transitions where the end frame differs significantly from the start frame.

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Inputs

ParameterDescriptionData TypeRequiredRange
promptText prompt for the generation (default: empty string)STRINGYesN/A
start_frameStart frame to be used for the videoIMAGEYesN/A
end_frameEnd frame to be used for the video. Supported for gen3a_turbo only.IMAGEYesN/A
durationVideo duration in seconds (default: “5”)COMBOYes"5"
"10"
ratioAspect ratio for the generated video (default: “768:1280”)COMBOYes"768:1280"
"1280:768"
seedRandom seed for generation. Set to 0 for random seed (default: 0).INTNo0 to 4294967295
Parameter Constraints:
  • The prompt must contain at least 1 character
  • Both start_frame and end_frame must have maximum dimensions of 7999x7999 pixels
  • Both start_frame and end_frame must have aspect ratios between 0.5 and 2.0
  • The end_frame parameter is only supported when using the gen3a_turbo model

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Outputs

Output NameDescriptionData Type
outputThe generated video transitioning between the start and end framesVIDEO
This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub
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