Skip to main content
Demux · Audio Track

Demux · Audio Track · screenshot coming soon

​
What this node does

Demux · Audio Track reads audio from COMFYTV_VIDEO and writes a standalone audio file (/view? URL). For picture-only, use Demux · Silent Video. Toolbar 🔀 Demux on upstream video stages creates both Audio Track + Silent Video nodes wired automatically.

​
When to use it

  • Pull BGM / dialogue for Audio Stage or IA2V
  • Feed Vocals Only (Demucs — ⏳ pending)
  • Replace audio: Silent Video + new audio (ffmpeg / future Timeline)

​
How it works

  • Stage + ▶ Run; PyAV demux_audio, no GPU.
  • Snapshot: audio URL persisted in project.
  • Shares source video snapshot with Silent Video; separate Run outputs.

​
Types

bridges.md

​
Parameters

​
video

Source COMFYTV_VIDEO. Required.

​
Outputs

​
Step by step

  1. Run upstream Video Stage or Load Video.
  2. Add Demux · Audio Track or click 🔀 Demux on upstream toolbar.
  3. ▶ Run.
  4. Wire audio to Video Stage audio (IA2V) or Vocals Only (pending).
This page covers one node only. For end-to-end workflows, multi-stage pipelines, type conversion, and design rationale, see the ComfyTV user guides on GitHub:

​
Repository and workflows

​
FAQ

Q: No audio stream?
A: Source may be silent; PyAV may error or write empty output. Q: Where is Demux button?
A: 🔀 Demux on upstream video stage toolbar. Q: Native AUDIO?
A: Add ← ComfyTV Audio.
  • Demux · Silent Video
  • Vocals Only / Background Only (pending)
  • Video Stage (IA2V)