How to convert video into Frames

Hi sir

I'm doing a project on histogram equalization of videos for that i need to convert videos into images(Frames) so that i can apply histogram techniques on images and again i convert back into video of avi format.

please help me sir i am using matlab version R2010a

Thankyou...

[Image Analyst]

That could give a very odd looking video. At the very least you'd want to do it only on the L or V channel, not on R, G, and B separately.

[vijay chander]

Thanks but the problem i'm facing is i cant able to read vido into matlab im getting the error saying that the following codec is missing on ur computer h 264 i cant understand whats this i cant able to figure it out im running out of time please help me about this Thank you

Answer 1

[David Young]

Is it possible for you to upgrade to version 2010b or later? If so, you could use VideoReader.

vreader = VideoReader(vidfile);
frames = 1:vreader.NumberOfFrames;

for f = frames
    try
        im = vreader.read(f);
    catch err
         <error processing>
    end
    <image processing>
end

[vijay chander]

thanks David for giving me solution i upgraded for 2011 a version but i m facing some errors

Error in ==> VideoReader.VideoReader>VideoReader.init at 423 obj.VideoReaderImpl = audiovideo.mmreader(fullName);

Error in ==> VideoReader.VideoReader>VideoReader.VideoReader at 133 obj.init(fileName);

[David Young]

Is that the whole error message? It's surprisingly uninformative. Are other programs able to read your file? If they can, I guess you might need to contact MathWorks support for advice.

[vijay chander]

no its saying that some codecs are missing in ur computer

[David Young]

I think MathWorks support is the best bet then. You might be able to work out how to download the missing codecs, but I can't really help with that, sorry.

[David Young]

I think MathWorks support is the best bet then. You might be able to work out how to download the missing codecs, but I can't really help with that, sorry.

Answer 2

[Urmila]

you can use mmreader(filemame) function. see matlab documentation on mmreader function.

[vijay chander]

im getting this error

>> mmreader('C:\vijay\Wildlife.avi')'; ??? Undefined function or method 'mmreader' for input arguments of type 'char'.