[GH-ISSUE #64] filename_prefix is not converting formatting information such as %date:yyyy-MM-dd% #18

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opened 2026-10-26 22:08:05 +00:00 by bsakaguchi · 2 comments
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Originally created by @MetaSamsara on GitHub (Nov 25, 2025).
Original GitHub issue: https://github.com/Comfy-Org/embedded-docs/issues/64

When using the save video node with an output filename such as video/%date:yy-MM-dd_hh-mm-ss%, the file gets named literally instead of the formatting information getting converted like with the save image node.

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I am running ComfyUI from Debian 13 using pyenv Python 3.12.3 and venv in case that is a relevant factor.

Originally created by @MetaSamsara on GitHub (Nov 25, 2025). Original GitHub issue: https://github.com/Comfy-Org/embedded-docs/issues/64 When using the save video node with an output filename such as video/%date:yy-MM-dd_hh-mm-ss%, the file gets named literally instead of the formatting information getting converted like with the save image node. <img width="805" height="710" alt="Image" src="https://github.com/user-attachments/assets/b1c33f04-72cd-4d7e-a232-0249fb217ca5" /> I am running ComfyUI from Debian 13 using pyenv Python 3.12.3 and venv in case that is a relevant factor.
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@comfyui-wiki commented on GitHub (Dec 1, 2025):

Image

I have tested, and I'm pretty sure it worked.

<!-- gh-comment-id:3597168143 --> @comfyui-wiki commented on GitHub (Dec 1, 2025): <img width="1132" height="611" alt="Image" src="https://github.com/user-attachments/assets/b1178624-ce5e-4b69-aae6-22c382ff5c6f" /> I have tested, and I'm pretty sure it worked.
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@geroldmeisinger commented on GitHub (Dec 11, 2025):

also see https://github.com/comfyui-wiki/Comments/discussions/8#discussioncomment-15217513

<!-- gh-comment-id:3641400435 --> @geroldmeisinger commented on GitHub (Dec 11, 2025): also see https://github.com/comfyui-wiki/Comments/discussions/8#discussioncomment-15217513
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Comfy-Org/embedded-docs#18
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