Table Of Contents

Read AVI Frame (G Dataflow)

Last Modified: June 25, 2019

Reads an image from the AVI file specified by AVI session in.

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AVI session in

Reference to the AVI file output from the Create AVI File (DirectShow) node or the Open AVI File (DirectShow) node.

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image in

Reference to the image that will contain the AVI image after you call this node.

This node will not change the type of the image you are passing, but will instead convert the image saved in the AVI to the image type of the image passed in.

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frame number

AVI file frame to read.

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frame read lookahead

Number of frames to lookahead when reading this AVI frame. Setting this parameter to be greater than 0 may enable the software to read some AVI files it could not read otherwise, but it will reduce performance.

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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AVI session out

AVI session out is the reference to the AVI file.

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image out

Reference to the destination image.

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data out

Data associated with the image being read.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application


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