Important Suggestions for Rendering Videos Over 200 Frames
Rendering long videos (above 200 frames) can be challenging in ComfyUI. To ensure success, follow these guidelines:
1. Remove the "Video Combine" Node. Instead, use the "Save Image" node.
Reasons for Removing the 'Video Combine' Node
- ⚠️ The VHS Video Combine node often crashes silently when processing hundreds of frames (200+), depending on the resolution. Therefore, removing it would be safer.
- You cannot place both the "Save Image" node and the "Video Combine" node at the same level, as the execution order is uncertain. The VHS node might run first and crash, preventing the "Save Image" node from executing.
- To determine the execution order, use ComfyUI-Manager:
- Turn on the Badge: #ID Nickname.
- A small number will appear on top of each node in your workflow. Nodes execute in ascending order based on these numbers if they are at the same level.
2. Output Path Configuration
Please see the detailed information here:
⚠️ How to Save Image/Images by Path in ComfyUI?
⚠️ Make sure you set the correct path, or you will not find the result in the file browser.
3. Limiting the Number of Frames
Use a machine with sufficient resources:
- Large Machine: 24GB VRAM, 48GB RAM
- Extra Large Machine: 48GB VRAM, 48GB RAM
⚠️ Render no more than 200 frames at a time:
- Limit each render to no more than 200 frames to avoid running out of memory.
So, If you have a long video with more than 200 frames, you need to render multiple times.
- Set the "frame_load_cap" to 200, meaning that you will render 200 frames at a time.
- Use "skip_first_frames" to decide which frame to start from. For example, if you want to start from the 101st frame, set "skip_first_frames" to 100.
