>> VideoReader Error using VideoReader (line 160) FILENAME must be specified.

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abbxucy11 2016-9-26

评论： Walter Roberson 2016-9-26

I run the VideoReader.m and i have this error.. any ideas what is going wrong?

Geoff Hayes 2016-9-26

I get the same error message if I simply call VideoReader from the command line as

 >> VideoReader
 Error using VideoReader (line 135)
 FILENAME must be specified.

As per the documentation at VideoReader you need to provide a file name as

>> vidObj = VideoReader('xylophone.mp4');

or using another file name that is specific to your work.

abbxucy11 2016-9-26

img = frame2im(VideoReader(video,1));

basically i want to create an image img that represents the first frame of the video

Walter Roberson 2016-9-26

Provided that video has been initialized as

video = VideoReader('SomeFileName.avi');

then

img = readFrame(video);

There is no frame2im() requires for this use.

If you have a sufficiently old MATLAB then you might need

img = read(video, 1);

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