IMAQ AVI Read Frame VI
- Updated2023-02-21
- 4 minute(s) read
Reads an image from the AVI file specified by Avi Refnum.
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Note This VI is not supported on ETS targets or VxWorks targets. |

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Avi Refnum is a reference to the AVI file output from the IMAQ AVI Create VI or the IMAQ AVI Open VI. |
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Image is a reference to the image that you want to contain the AVI image after you call this VI. IThis VI 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 identifies which frame of the AVI file to read. |
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error in (no error) describes the error status before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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Frame Read Lookahead specifies the number of frames to lookahead when reading this AVI frame. Setting this parameter to be greater than 0 may enable NI Vision to read some AVI files it could not read otherwise, but it will reduce performance. |
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Avi Refnum (duplicate) is the reference to the AVI file. |
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Image Out is a reference to the destination image. |
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Data Out is the data associated with the image being read. |
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
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Examples
Refer to the following for an example that uses this VI.
- LabVIEW\examples\Vision\Files\Read Write AVI With Data.vi













