I am using the following method:
obj=VideoReader(filename); %Read the video
vidFrames=read(obj); %Capture the video frames
Then run a loop and read frame one by one
I=vidFrames(:,:,:,i); %i --> Frame Number
As against:
vid = videoinput(camera_name, camera_id, format);
data = getsnapshot(vid);
[f,t] = getdata(vid);
Where t will give you the frame time
Gives error:
No appropriate method, property, or field CurrentTime for class VideoReader.
If I execute these lines, it works in Matlab 2014b. However the class VideoReader was introduced in Matlab R2010b, so it should work for you too:
>> obj=VideoReader('myvideo.mp4');
>> t = obj.CurrentTime
t =
0
Also, this page contains all the properties of an object belonging to such class: http://se.mathworks.com/help/matlab/ref/videoreader-object.html
*EDIT*
Manual method:
You can use obj.Duration to evaluate the frame time:
total_frames = size(vidFrames,4);
total_time = obj.Duration;
current_time = current_frame * total_time / total_frames;
If obj.Duration doesn't work either, manually get the duration of your video and do the calculation as described.
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