Video Combine (Custom Path)

ComfyUI-CustomVideoSave

Video Save Plus (Custom Path) 🎬 — v2.1.0

Saves a video with its generated audio (MP4, H.264/H.265 + AAC) to any folder on any drive, plus a workflow PNG, an optional workflow JSON, an optional prompt .txt and optional frames. Built for models with native audio (Grok Imagine, MiniMax, …) as well as classic IMAGE + AUDIO workflows.

Three ways to feed it

| Input | What happens | |---|---| | video (VIDEO) | Frames, audio and fps are taken from the object and re-encoded with the quality settings. | | images + audio | Classic: frames piped as raw RGB, audio as raw PCM into ffmpeg. | | source_video_path (v2.1) | Passthrough: a finished MP4 (e.g. video_path of Grok Imagine Video) is copied 1:1 — no re-encoding, no quality loss, original audio kept. Connect audio as well and only the soundtrack is replaced (video stream copied). Codec/CRF/preset/pixel_format are ignored. |

Typical Grok wiring:

[Grok Imagine Video] --video_path--> source_video_path
                     --prompt------> prompt_text          (name.txt)
                     --frames------> images  (optional: lossless first/last frame, PNG)

Files written

video_00012.mp4              ← video with audio
video_00012.png              ← first frame + embedded workflow (drag & drop into ComfyUI)
video_00012.json             ← workflow as JSON (save_workflow_json)
video_00012.txt              ← prompt (only if prompt_text is connected)
video_00012_last Frame.jpg   ← via button or save_frame option
video_00012_first Frame.jpg  ← via save_frame option

All files share the same base name; the counter is appended automatically.

Inputs

| Input | Type | Notes | |---|---|---| | video | VIDEO (opt.) | Frames, audio and fps are taken from it | | images | IMAGE (opt.) | Used when no VIDEO is connected; in passthrough only for PNG/frames | | audio | AUDIO (opt.) | Overrides the audio of a VIDEO input / replaces the passthrough soundtrack | | source_video_path | STRING (opt.) | Passthrough of a finished MP4 (connect or type a path) | | prompt_text | STRING (opt.) | Written as name.txt | | seed | INT (opt.) | For the %seed% placeholder | | filename_prefix | STRING | Supports subfolders and %date%, %time%, %seed%, %date:yyyy-MM-dd% | | custom_output_path | STRING | Any folder; empty = ComfyUI output | | frame_rate | FLOAT | Only for images input | | video_codec | h264 / h265 | | | crf | 0–51 (default 19) | Main quality control, lower = better | | preset | ultrafast … veryslow | Speed vs. size, not quality | | pixel_format | yuv420p / yuv444p | | | audio_bitrate | 64–320 kbit/s | AAC | | save_workflow_png | BOOLEAN | | | save_workflow_json | BOOLEAN | new in 2.1 | | png_compression | 0–9 | PNG is always lossless | | save_frame | none / first / last / first+last / all | all needs frames | | frame_format | jpg / png | | | frame_quality | 10–100 | JPEG quality | | copy_to_folder | STRING | Target for "Save Training File" |

Every field has an English tooltip in the node.

Output: filepath — the full path of the saved MP4.

Buttons

• Reveal in file manager — opens Explorer/Finder with the last MP4 selected.
• Open video (with sound) — plays the last MP4 in the system player.
• Save Last Frame — writes name_last Frame.jpg/png from the frame kept in memory (lossless, instant); in passthrough mode or after a restart it is extracted from the MP4 with one ffmpeg seek.
• Save Training File — copies the whole set (mp4 + png + json + txt + frames) to copy_to_folder with identical names.
• Delete Last Generation — deletes the whole set after confirmation.

After each run the node shows resolution, frame count, duration, size, whether it was a passthrough, and an audio status line (✓ Audio: 48000 Hz stereo, 5.00 s / ✓ Audio: 44100 Hz stereo (original track kept) / ⚠ No audio), plus an inline player with sound.

Security: the server endpoints only operate on files this node saved during the current session — never on arbitrary paths from the browser.

Installation

ComfyUI Manager

Search for Video Save Plus and install.

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/Slartibart23/ComfyUI-CustomVideoSave

Restart ComfyUI, then press Ctrl+F5 in the browser once.

Requirements: ffmpeg on the PATH (or pip install imageio-ffmpeg); ffprobe (ships with ffmpeg) is used for passthrough status. No torchaudio needed.

License

MIT