feat: add timestamp to output filenames for cache-busting #12200
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Add get_timestamp() and format_output_filename() utilities to folder_paths.py that generate unique filenames with UTC timestamps. This eliminates the need for client-side cache-busting query parameters. New filename format: prefix_00001_20260131-220945-123456_.ext Updated all save nodes to use the new format: - nodes.py (SaveImage, SaveLatent, SaveImageWebsocket) - comfy_api/latest/_ui.py (UILatent) - comfy_extras/nodes_video.py (SaveWEBM, SaveAnimatedPNG, SaveAnimatedWEBP) - comfy_extras/nodes_images.py (SaveSVG) - comfy_extras/nodes_hunyuan3d.py (Save3D) - comfy_extras/nodes_model_merging.py (SaveCheckpointSimple) - comfy_extras/nodes_lora_extract.py (LoraSave) - comfy_extras/nodes_train.py (SaveEmbedding) Amp-Thread-ID: https://ampcode.com/threads/T-019c17e5-1c0a-736f-970d-e411aae222fc
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Summary
Add
get_timestamp()andformat_output_filename()utilities tofolder_paths.pythat generate unique filenames with UTC timestamps. This eliminates the need for client-side cache-busting query parameters.Old format:
ComfyUI_00001_.pngNew format:
ComfyUI_00001_20260131-220945-123456_.pngChanges
get_timestamp()- returns UTC timestamp in formatYYYYMMDD-HHMMSS-ffffff(filesystem-safe)format_output_filename()- centralizes filename generation with counter and timestampnodes.py(SaveImage, SaveLatent, SaveImageWebsocket)comfy_api/latest/_ui.py(UILatent)comfy_extras/nodes_video.py(SaveWEBM, SaveAnimatedPNG, SaveAnimatedWEBP)comfy_extras/nodes_images.py(SaveSVG)comfy_extras/nodes_hunyuan3d.py(Save3D)comfy_extras/nodes_model_merging.py(SaveCheckpointSimple)comfy_extras/nodes_lora_extract.py(LoraSave)comfy_extras/nodes_train.py(SaveEmbedding)tests-unit/folder_paths_test/output_filename_test.pyRelated
Companion frontend PR: Comfy-Org/ComfyUI_frontend#TBD (removes client-side cache-busting)