number of frames in a video using VideoReader in r2015a

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THONTI BEERAIAH 2020-9-9

编辑： THONTI BEERAIAH 2020-9-9

A = VideoReader('Augthirtycm.mp4'); 
n=A.NumFrames;
%Above is my simple code but when I run code it is showing error like below

No appropriate method, property, or field 'NumFrames' for class 'VideoReader'.

Error in frmaes (line 2)

n=A.NumFrames;

is there any alternative command for finding total number of frames in my video in r2015a version

Ameer Hamza 2020-9-9

n=A.NumberOfFrames;

Walter Roberson 2020-9-9

Look down in the Limitations of the current documentation:

For some AVI, MOV, or MP4 files on Windows®, using the readFrame function to read all of the frames in the file can result in a different number of frames than the value returned by the NumFrames property of the VideoReader object.

The NumFrames count is not exact.

编辑：THONTI BEERAIAH 2020-9-9

yes, 'NumberOfFrames' is showing exact number of frames thank you

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