Currently, the Video Viewer app does not provide a built-in programmatic interface for controlling playback or displaying specific frames. However, you can use MATLAB functions directly to achieve a similar outcome.
As a workaround, you can use the "VideoReader" object to access frames and then display them using the "imshow" function. Below is an example of how to display a sequence of frames from a video with a pause of 1 second between each frame:
% Create a VideoReader object to read the video file
v = VideoReader('xylophone_video.mp4');
% Vector of frame numbers you want to display
frameIndices = [1, 25, 50, 75, 100];
% Loop through the frame indices
for i = 1:length(frameIndices)
% Set the current time of the video reader object
frameIndex = frameIndices(i);
if frameIndex >= 1 && frameIndex <= v.NumFrames
% Get the timestamp of video frame to read
v.CurrentTime = (frameIndex-1) / v.FrameRate;
% Read the frame at the specified time
frame = readFrame(v);
% Display the frame
imshow(frame);
title(['Frame index: ' num2str(frameIndex)]);
% You can apply a fixed pause duration
pause(1); % Pauses for 1 second
else
disp(['Frame number ' num2str(frameIndex) ' is out of range.']);
end
end
For more details about "VideoReader", "readFrame", and "writeVideo", please refer to the following links:
VideoReader:
readFrame:
writeVideo:
