Importing large .avi files into MATLAB

I am struggling to get a video imported into MATLAB with the error that "ran out of memory"

The video is just over 2000 frames and just over 1GB in size.

I have tried avireader and mmreader at no avail.

Can I import a large video into MATLAB frame-by-frame

[Doug Hull]

Edited to simplify question. Each question should be a single question. Ask another question for the other aspects.

[Jason Ross]

Also, details of the hardware (specifically the amount of RAM) and OS bit-ness (32 or 64 bit) would be helpful.

Answer 1

[Image Analyst]

You should be able to using the VideoReader class. Here's the example from the help:

Examples

Construct a VideoReader object for the demo movie file xylophone.mpg and view its properties:

xyloObj = VideoReader('xylophone.mpg', 'Tag', 'My reader object');
get(xyloObj)

Read and play back the movie file xylophone.mpg:

xyloObj = VideoReader('xylophone.mpg');

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);

[Jason]

Thank you for your response.

VideoReader does not work for my version of MATLAB but mmreader will.

The problem I am still getting is that eventually I run out of memory.

Is there a way where you can read in one frame at a time, show that frame, then ask MATLAB to read in the next frame and replace the previous frame, thus making a movie this way?

Thank you

Jason

[Andreas Goser]

We're talking about a 64 Bit system, right?