Select Latents 🎥🅥🅗🅢 (SelectLatents) - ComfyUI-VideoHelperSuite

The Select Latents 🎥🅥🅗🅢 node receives a dictionary containing multiple latent representation samples as input.

The Select Latents node is a tool for filtering specific frames from a set of latent representations. Its core function is to extract corresponding parts from the input latent batch based on user-specified indexes and output a new latent batch. This operation is similar to "selecting shots" in video editing, allowing users precise control over the frame sequence for subsequent processing.

Node Function

This node receives a dictionary containing multiple latent representation samples as input. Its internal mechanism parses the index string provided by the user, converts it into a specific index list, and then extracts corresponding data slices from each tensor in the input dictionary based on these indexes. It supports flexible index formats, including single numbers, comma-separated lists, and range representations (e.g., 0-5,10), and can handle potential index out-of-bounds issues.

Node Parameter Description - Select Latents 🎥🅥🅗🅢

Connection Inputs (Inputs)

Parameter Name	Data Type	Required	Default Value	Value Range/Options	Description
`latent`	LATENT	Yes	-	-	latent (Input Parameter): The input latent batch to be filtered, typically from outputs such as VAE encoding or other generation nodes.

Control Parameters (Parameters)

Parameter Name	Data Type	Required	Default Value	Value Range/Options	Description
`indexes`	STRING	Yes	0	-	e.g., `1,3,5` or `0-4`. Indexes start from 0.
`err_if_missing`	BOOLEAN	Yes	True	-	err_if_missing (Input Parameter): When set to True, the node will report an error if a specified index is out of the input range; when set to False, out-of-bounds indexes are ignored.
`err_if_empty`	BOOLEAN	Yes	True	-	err_if_empty (Input Parameter): When set to True, the node will report an error if the filtered result based on the indexes is empty; when set to False, empty outputs are allowed.

Output

Parameter Name	Data Type	Description
LATENT	LATENT	LATENT (Output Parameter): The output filtered latent batch, containing only the frames corresponding to the specified indexes.

Usage Scenarios

This node is very useful in video generation or editing workflows. For example, after using a node that generates latent representations in batches (such as "VAE Encode (for Batches)") to create a latent sequence for a video, you can use this node to select only the highest quality or most critical frames. The filtered results can then be sent to the next sampling or decoding node, allowing you to focus on processing the selected segments, thereby improving workflow efficiency or achieving specific effects.

Notes

Please note that indexes start from 0. If error checking is enabled, the node will throw an exception and stop workflow execution when a specified index exceeds the actual range of the input latent representations or when the final filtered result is empty. This helps quickly locate issues in complex workflows.

Select Latents 🎥🅥🅗🅢 Node Source Code Link

The Select Latents 🎥🅥🅗🅢 node is from the ComfyUI-VideoHelperSuite node package.

Select Latents 🎥🅥🅗🅢(SelectLatents)

Select Latents