Example Code
Code and Documents
Attachment
Overview
This VI is based on another Community VI AVI playback with frame seek however, the following features were added
- Ability to extract a section of the video (frames)
- Ability to save the extracted video/frames to a new AVI
With this VI the user can "clip" or "cut" a section of the video they want, and save the section into a new AVI file.
As stated in the previous sample, this VI also "allows you to playback an AVI file and provides additional functionality to slow down playback, select a specific frame, and advance frame-by-frame."
Description
This code uses an event driven state machine to implement an AVI viewer in LabVIEW.
The frame extraction and saving to a different AVI is done in a For Loop in the Event Structure.
Steps to Implement or Execute Code
Viewing the AVI
- Run the code
- Select an AVI file to view
- Use the Play/Pause/Previous Frame/Next Frame/Slow buttons to play through the AVI file.
- The 'Delay' control allows the speed of the slow playback to be modified
- The 'Current Frame' control can be changed to select a specific frame.
Extracting part of the AVI
- Move to the first frame you want to extract, press "Mark First Frame"
- Move to the last frame of portion you want to extract, press "Mark Last Frame"
- Press "Extract and Save", specify where to save the output AVI file.
Requirements
Software
LabVIEW 2014, valid AVI file.
LabVIEW Vision Development Module
Hardware
None
Preview
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.
