ComfyUI-LTXVideo model install fails because `git-lfs: command not found`

[greyltc]

Describe the bug

txt to video requirements install failure

To Reproduce

1. choose txt to video (LTX Video) (high-vram) workflow type
2. type any prompt text into the create tab
3. click the generate button

• new model download dialog appears
• select all components and continue
• download and install progresses then fails
• press ctrl + shift + i to open a console to see the following

index-gvJDDaNb.js:133 [ai-backend]   WARNING: The scripts gguf-convert-endian.exe, gguf-dump.exe, gguf-new-metadata.exe and gguf-set-metadata.exe are installed in 'C:\ai\AI Playground\resources\comfyui-backend-env\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
index-gvJDDaNb.js:133 [ai-backend] 2025-03-01 10:42:02,117 - INFO - python requirements installation completed.
index-gvJDDaNb.js:133 [ai-backend] 2025-03-01 10:42:02,117 - INFO - calling cmd process: ['../portable-git/cmd/git.exe', 'clone', 'https://github.com/Lightricks/ComfyUI-LTXVideo', '../ComfyUI\\custom_nodes\\ComfyUI-LTXVideo']
index-gvJDDaNb.js:133 [ai-backend] Cloning into '../ComfyUI\custom_nodes\ComfyUI-LTXVideo'...
index-gvJDDaNb.js:133 [ai-backend] git-lfs filter-process: line 1: git-lfs: command not found
fatal: the remote end hung up unexpectedly
index-gvJDDaNb.js:133 [ai-backend] warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry with 'git restore --source=HEAD :/'

index-gvJDDaNb.js:133 [ai-backend] 2025-03-01 10:42:03,329 - ERROR - Failed to call subprocess ../portable-git/cmd/git.exe clone https://github.com/Lightricks/ComfyUI-LTXVideo '../ComfyUI\custom_nodes\ComfyUI-LTXVideo' with error Command '['../portable-git/cmd/git.exe', 'clone', 'https://github.com/Lightricks/ComfyUI-LTXVideo', '../ComfyUI\\custom_nodes\\ComfyUI-LTXVideo']' returned non-zero exit status 128.
2025-03-01 10:42:03,329 - WARNING - git cloned failed with exception Command '['../portable-git/cmd/git.exe', 'clone', 'https://github.com/Lightricks/ComfyUI-LTXVideo', '../ComfyUI\\custom_nodes\\ComfyUI-LTXVideo']' returned non-zero exit status 128.. Cleaning up failed resources.

Expected behavior

txt to video install proceeds without error

Screenshots

n/a

Environment (please complete the following information):

• OS: Windows11
• GPU: Intel Arc Graphics
• CPU: Intel Core Ultra 7 155H
• Version: v2.2.0-beta

Additional context

n/a

[bobduffy]

It sounds like the components didn't install.

1. Be sure you are on v2.2b. This workflow will fail with v2.0.

2. If on 2.2b Restart AI Playground, try again.

3. Confirm the name of the workflow. Is it called "Text to Video"
   The resolution megapixel should give you .1 .25, .35 and .5. If this is not the case, click the cloud icon to get the right workflow

4. If the issue persists copy and paste the last 5 entries from the console when it fails

[greyltc]

I've now resolved this issue by installing the git-lfs command manually by running

winget install -e --id GitHub.GitLFS

prior to attempting to install the new Txt to Video workflow.

[Gydvins]

@greyltc I did everything according to your instructions but it doesn’t work. Tell me please

[greyltc]

@greyltc I did everything according to your instructions but it doesn’t work. Tell me please

@Gydvins Yeah, you're likely getting the "doesn't exist" error (like I was) because the workflow failed to install because (in my case) the upstream repo (https://github.com/Lightricks/LTX-Video) that actually powers the new "Txt to Video" feature here can't be cloned without git-lfs. So you might try:

1. Fully and properly uninstall ai playground (make sure everything is deleted including all workflows/models)
2. Run winget install -e --id GitHub.GitLFS in your windows terminal to install git-lfs
3. Probably reboot now for good measure and to ensure git-lfs makes it onto your PATH
4. Reinstall ai playground
5. Go through the Txt to Video workflow installation process, which might this time succeed because the upstream repo can be cloned properly with git-lfs

@bobduffy what is the mechanism here that (should?) install(s) git-lfs so that the clone of LTX-Video works? grepping the main branch of https://github.com/intel/AI-Playground.git for the string git-lfs doesn't show me anything. Do you think this issue should remain open since it seems now that I'm not the only one having trouble here?

[bobduffy]

The other issue on this topic is still open and points to this issue. No need to have two open. Waiting for this to get a look at Monday.
The mechanism that should install everything needed is installed with AI Playground

[Gydvins]

@greyltc Thank you very much, everything worked) Have a nice day.