VideoMark Title

The bit the overlay node can't do

VideoMark Overlay stamps every frame you hand it, which is the wrong tool for a credit card - those live outside the clip. VideoMark Title renders card frames and splices them onto the front and/or back of an IMAGE batch, then returns the longer batch plus an audio track shifted to match. Head, tail, or both; text, logo, or both; about 2 seconds is the usual.

Why not just do it in an editor? Because that's one more turn of the export-review-reimport loop, and because a card you can re-queue is a card you'll actually update: change the year in the copyright line, hit queue, done. If you generate clips in batches - a Wan run, a side-view sweep, a LoRA comparison - a card that lands on every output beats remembering to add it afterwards.

Pack reputation note, since there isn't one: this is a young, low-profile pack with essentially no discussion in the r/StableDiffusion + r/comfyui + r/civitai corpus - a search for "videomark" across two years returns nothing. The watermark talk that does exist mostly runs the other way, people stripping marks rather than adding them. Judge this one on the code.

How it works

seconds × fps gives the frame count (max(1, round(seconds * fps))). A solid card of that many frames is rendered once - background colour, then text and optional logo laid out as a percentage of frame width - and concatenated before your batch, after it, or both. The card frames come out clean: they don't get the watermark. fade_frames fades the card in from pure black and back out, which on a black background reads as your text and logo fading in.

Connect an audio track and pad_audio inserts matching silence - seconds of it at the head, the tail, or both - so picture and sound still line up after the splice. That's the whole node: numpy and Pillow, no model, no dependencies.

The inputs you'll actually touch

• fps - the one field that silently ruins renders. The node converts seconds to frames with it, so it has to match the rate you mux at (H3 commonly outputs 24). Get it wrong and your "2 second" card is 1.6 or 2.5.
• where - head, tail, or both, plus seconds.
• text - multiline, so © 2026 you\nAll rights reserved works; map it to a year you'll actually update. Optional text_in lets an upstream string node (Text Concatenate, String Function) take over the card text, and blank upstream falls back to the widget instead of blanking the card.
• bg_color (default pure black), use_text / use_logo, logo_scale and text_scale (both percentages of frame width; 20–30 suits a Chinese end card), text_color and text_stroke_width (leave at 0 on black, give it 2–4 if you lighten the background), fade_frames (8 by default, 0 for a hard cut).
• pad_audio - leave it on. Plus the optional audio input and the same logo trio the Overlay uses: logo_file, or a wired logo IMAGE (the wire wins), with logo_mask overriding a PNG's own alpha.

Two outputs: images (the extended batch) and audio (the padded track, empty if you connected nothing).

Wiring it up

… video model → decode to IMAGE ──► VideoMark Title ──images──► video combine / SaveVideo
                                          ↑                         ↑
                                     audio ─┘───────────────────────┘

Put it after the Overlay, or you'll watermark your own copyright card. And note the node isn't an output node: if nothing downstream consumes images, the graph never executes it. Add a SaveImage or a combine node, or you'll conclude the node is broken.

Install

# ComfyUI Manager: search "comfyui-videomark"
cd ComfyUI/custom_nodes
git clone https://github.com/kaerozhi/comfyui-videomark.git

Or comfy node install comfyui-videomark. Nothing to pip install - this pack adds exactly zero to your Python environment. Restart ComfyUI so the built-in panel loads.

Where people get burned

Audio that drifts by exactly your card length. That's pad_audio off. A 2-second card with an unpadded track puts the whole soundtrack 2 seconds early against picture, and everything downstream is wrong. It's on by default; leave it.

A card holder with no card. use_logo defaults to off, so wiring a logo image changes nothing until you flip it - same trap as the Overlay.

黑体 (simhei) has no © glyph and renders a box where the symbol should be. Use 微软雅黑 / 宋体 / 楷体, or set font_file to an absolute path. If the font dropdown offers only the built-in fallback, font_file is your only option.

A card that looks like a black-to-white wipe. The fade starts from black, not from transparent - fine on purpose with a non-black bg_color, jarring by accident.

A card that's the wrong length after export. Almost always a mux rate that differs from fps, not the node.