NumberOfFrames using VideoReader function matlab 2016a

4 次查看（过去 30 天）
Ravindra
Ravindra 2018-11-20
评论： Ravindra 2018-11-20
Hi all,
The object created using VideoReader function in matlab does not show the NumberOfFrames.
Referring to https://de.mathworks.com/matlabcentral/answers/250033-number-of-frames-in-video-file-with-matlab-2015b
This could be because of the variable frame rate.
The Number of frames can be estimated:
vidObj = VideoReader('myfile.MOV');
numFrames = ceil(vidObj.FrameRate*vidObj.Duration);
In My algorithm I needed to pick a particular frame, so I decded to export all frames as picture using:
vidObj = VideoReader('myfile.MOV');
numFrames = 0;
while hasFrame(vidObj)
readFrame(vidObj);
numFrames = numFrames + 1;
end
But after 14000 frame has been exported I encountered the following error:
What could be possible reason for this error? or skip this particular frame
How could this be fixed??
Thank you very much for your suggestions and help in advance.
  2 个评论
Ravindra
Ravindra 2018-11-20
Thanks Jan for the link.
After reading the discussion...that means the video is mix of encrypted and unencrypted (Mixed segments).
How it is possible to make it uniform??
Is there any tool available to convert the *.MOV file to *.avi or some other standard matlab format??

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Video Formats and Interfaces 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by