Path Filename V2

If you generate images in ComfyUI more than twice a week, you've already lost files to ComfyUI_00001_.png. Path Filename V2 is the AUN pack's recommended cure: one node that turns your model name, seed, CFG, steps, date, and a few free-text parts into a sensible, consistent filename - and it's the piece the whole AUN "V2" save pipeline is built around. If you're starting a new workflow, this is the one to use.

What changed vs the legacy node

The headline: it outputs one combined path_filename string instead of separate path and filename wires. One wire, no sync problems, and it plugs straight into AUN Save Image V2 (the node the README pairs it with). It also returns date_format as a second output, which the V2 saver needs to keep the dated subfolder logic consistent.

The other big addition is real naming modes. Where the legacy node just had a name field, V2 has:

• name_mode - Manual uses your manual_name; Auto uses auto_name (an optional input you can wire from a prompt or label node).
• max_num_words - when Auto, crops auto_name to this many words. Set 0 for no limit. This is where AUN NameCrop's job gets absorbed for free.

The rest of the inputs

The familiar assembly stays: MainFolder (root), Date_Subfolder (now keyed to the date_format enum - the format you pick drives the subfolder name), Subfolder_A/Subfolder_B, prefix_1/prefix_2, suffix_1/suffix_2, Labels, and delimiter for joining parts. The token toggles are back too - Model (%model_short%), Sampler (%sampler_name%), Scheduler, Seed (seed_%seed%), Steps (steps_%steps%), CFG (CFG_%cfg%), Date (%date%) - and an optional batch_size for savers. Note the syntax: canonical AUN placeholders are now %token% (with percent signs both sides), and savers still accept the legacy %token form for backward compatibility.

How you'd set one up

Say you want 2026-08-16/portfolio/portrait_juggernautXL_seed_1234_cfg_7_steps_30.png. Set MainFolder to outputs/portfolio, Date_Subfolder on, name_mode to Manual with manual_name = portrait, switch on Model, Seed, CFG, Steps, and the delimiter to _. Wire path_filename into AUN Save Image V2 and you're done. The same node also feeds AUN Filename Resolver Preview V2 if you'd rather save with ComfyUI's stock Save Image node - that resolver converts the combined string back to resolved path + filename for the standard saver.

Install

It's part of AUN ComfyUI Nodes (loz2754):

cd ComfyUI/custom_nodes
git clone https://github.com/loz2754/AUN-ComfyUI-Nodes

or ComfyUI Manager → search "AUN ComfyUI Nodes" → install → restart. Deps (piexif, opencv-python-headless, imageio-ffmpeg, requests) come via Manager; nothing to download manually.

The honest caveats

Long MainFolder + long filename still hits Windows path limits - keep both modest. And a placeholder that comes out unresolved (a literal %model_short% in a filename) almost always means the string was consumed by something that doesn't know AUN's token syntax, so check the saver, not the builder. But for the 95% case - want a real filename, wired in two connections - this is the node the pack wants you to reach for.