MATLAB: Play audio in video

audioaudio processingcolor vissionComputer Vision ToolboxImage Processing Toolboxvideo processing

hi friends… i want to play audio(.wav) file in live video. here the problem is audio must play for every a first frame of video only, how to control it.. please give me any idea.. 1v@

Best Answer

You effectively cannot do that within MATLAB itself, except by using the Computer Vision toolbox.

Related Solutions

MATLAB: How to combine audio and video

You are writing all of the audio for the first frame and only reading and writing one frame.

you need to loop reading one input frame and writing that frame out together with the audio that matches it. For example if your audio output rate were 44100 and your video output were 22 frames per second then you should emit roughly 2000 audio samples for each video frame .

You might want to buffer() your audio to make it easier to write the appropriate amount of audio per frame .

MATLAB: Add/extract Audio to/from Video

Write audio in a video using vision.VideoFileWriter. The source of code

VideoFrameRate = 24;
TempImage = imread('cameraman.tif');
load handel.mat
y = y(1:4 * Fs, :); % select the first 4s
AudioStep = Fs / VideoFrameRate;
videoFWriter = vision.VideoFileWriter('Temp.avi', 'FileFormat', 'AVI',...
    'FrameRate', VideoFrameRate, 'AudioInputPort', true);
for i = 1:(VideoFrameRate * length(y) / Fs)
    TempIndexBeginning  = floor((i - 1) * AudioStep) + 1;
    TempIndexEnding     = ceil(TempIndexBeginning + AudioStep - 1);
    step(videoFWriter, TempImage, y(TempIndexBeginning:TempIndexEnding));
end
release(videoFWriter);

Read Sound from Video directly usind audioread


[y1,Fs1] = audioread('Temp.avi');

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Related Solutions

MATLAB: How to combine audio and video

MATLAB: Add/extract Audio to/from Video

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