How to create video from frames and audio file?

I used this code but the output video has a faster rate than the original video

hmfr=video.MultimediaFileReader('video.avi','AudioOutputPort',true,'VideoOutputPort',true);
writer=video.MultimediaFileWriter('out.avi','AudioInputPort',true,'VideoInputPort',true);
for i=1:300
    videoFrame=step(hmfr);
    [i,audio]=step(hmfr);
    step(writer,videoFrame,audio);
end
close(hmfr);
close(writer);

Need help please! Thanks in advance.

Answer 1

[mako]

Hi, I've been using vision.VideoFileReader and vision.VideoFileWriter in order to create the video with audio and there I can pass a parameter named 'FrameRate' to the writer function, and it is like this:

videoFWriter = vision.VideoFileWriter('video.avi','FrameRate',videoFReader.info.VideoFrameRate);

Maybe you can change to these two functions or maybe the one you are using also has the 'FrameRate' parameter.

I hope this helps.

By the way, please, if you have a minute, take a look at the question I asked yesterday and help me out there, it is related to this matter, just a doubt with the audio. This is the link: http://www.mathworks.com/matlabcentral/answers/133137-problem-adding-audio-to-video-file

Thanks in advance.