HOW can i find number of frames using vision.VideoFileReader?

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syhem samti
syhem samti on 17 Nov 2015
Commented: Saffana Siddiqua on 10 Dec 2019
i didn't find a way to determiner number of frames using vision.VideoFileReader...any idea?

Answers (1)

Dinesh Iyer
Dinesh Iyer on 17 Nov 2015
To use the system object to determine this value, you will have to read through the entire file like this:
vfr = vision.VideoFileReader;
numFrames = 0;
while ~isDone(vfr)
step(vfr);
numFrames = numFrames + 1;
end
The VideoReader object has a property called NumberOfFrames that you can query for this value. Starting R2014b, the doc says that this property is being deprecated. However, its been 3 releases but its still going strong.
Dinesh

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