SVI2Pro+FLFVideoExtension
Allows you to extend existing videos using keyframes.
SVI2PRO FLF V1.1
Added a switch to enable/disable end_samples (Last Frame) directly, without manually connecting/disconnecting inputs. This toggles the First/Last Frame functionality: if disabled, the node reverts to the base SVI 2 PRO behavior. (Requires updating the Wan-SVI2Pro-FLF nodes to the latest version)
Added contrast adjustment widget, useful if your output looks washed out.
SVI2PRO FLF V1
Workflow for ComfyUI that combines SVI 2 Pro motion continuity with Wan 2.2 First/Last Frame (FLF) style control over the end of a clip, enabling smooth video generation from a sequence of frames.
SVI2PRO VideoExtension
This workflow uses SVI 2 PRO to extend existing videos: just load your video, add a prompt, and watch it seamlessly generate the continuation.
3-Stage Loop Automation
Experimental: 3-Part Loop Mode
Uses 3 images (Start / Loop / End) and 3 prompts to automate sequences:
Start → Loop entry
Repeating loop action (varies per cycle if increment is enabled)
Loop exit → Final frame
Ensure prompts match their corresponding image transitions.
If you like these workflows, I’d love to see your results, please share your videos in the Gallery or link them in the comments.
Repository:
Recommended models for these workflows:
SFW:
• https://civarchive.com/models/2053259?modelVersionId=2376074
• https://civarchive.com/models/2053259?modelVersionId=2376133
NSFW:
• https://civarchive.com/models/2053259?modelVersionId=2540892
• https://civarchive.com/models/2053259?modelVersionId=2540896
Description
Added a switch to enable/disable
end_samples(Last Frame) directly, without manually connecting/disconnecting inputs. This toggles the First/Last Frame functionality: if disabled, the node reverts to the base SVI 2 PRO behavior. (Requires updating the Wan-SVI2Pro-FLF nodes to the latest version)Added contrast adjustment widget, useful if your output looks washed out.
FAQ
Comments (7)
Everything works well. On my part, I've only corrected the ability to manually specify the image size. I don't understand these megapixels, and I don't want to calculate the resolution in my head to avoid OMM.
I can't understand why there's a slight flickering of the image during the initial creation.
That's probably due to motion_latent_count in the "Clip 1" subgraph, I set it to 1 during testing and forgot to reset it. Sorry about that! Change it back to 0 and it should work.
Thank you. It seems to have worked. I have a wish: I would like to see a workflow with a continuation of the video, but only with FLFV. You only have 30 seconds, and your workflow "continuation of the video" doesn't have the final frame.
@dirtysem Do you mean video continuation with keyframes?
@WhateverName Yes. Sorry if I didn't describe it correctly. English is not my native language. So that the last frame can be customized in each clip.
@dirtysem I've added one, though you might need to adapt it manually to your resizing method.
@WhateverName thank you very much!