VideoReader error 'Error using message/getString'

hi all im quite new to matlab and i wanted to use the VideoReader to read a video file.

info = mmfileinfo('80A Expo300 Diaph2.8 200Hz.avi');

xyloObj = VideoReader('80A Expo300 Diaph2.8 200Hz.avi');
get(xyloObj)

nFrames = xyloObj.NumberOfFrames;
vidHeight = xyloObj.Height;
vidWidth = xyloObj.Width;

% Preallocate movie structure.
mov(1:nFrames) = ...
    struct('cdata', zeros(vidHeight, vidWidth, 3, 'uint8'),...
           'colormap', []);

% Read one frame at a time.
for k = 1 : nFrames
    mov(k).cdata = read(xyloObj, k);
end

% Size a figure based on the video's width and height.
hf = figure;
set(hf, 'position', [150 150 vidWidth vidHeight])

% Play back the movie once at the video's frame rate.
movie(hf, mov, 1, xyloObj.FrameRate);

i used the code in the matlab HELP to get started and when i run it i received error as follow:

Error using message/getString
Incorrect number of parameters supplied for
'MATLAB:nomem'. Expected 0 but found 1.

Error in VideoReader.handleImplException (line
375)
            throwAsCaller(MException(implException.identifier,
            msgObj.getString));

Error in VideoReader/read (line 145)
    VideoReader.handleImplException(err);

Error in testing_video (line 20)
    mov(k).cdata = read(xyloObj, k);

can someone please tell me what is the problem with it? thanks.

Answer 1

[Geoff Hayes]

I took your code and was able to use it to read the first 30 frames of an avi that I have. So there doesn't appear to be anything incorrect with what you have implemented. However, if I tried to process all 1308 frames, the following error was generated when the movie command was invoked:

Error using movie (line 44)
Java exception occurred:
java.lang.OutOfMemoryError: Java heap space

I can't help but wonder if you are running into the same problem (but earlier in the code). You have noted above the

 Incorrect number of parameters supplied for
'MATLAB:nomem'. Expected 0 but found 1.

message. nomem seems to imply no memory. How many frames are you trying to process in your avi? What is the size of each frame? At which k (frame) is the error thrown? It could be that you don't have enough memory to process all frames in the video. Try processing the first 30 frames only - does that work?