Allowing fixed-length of video recording in Windows Phone

Question

I want to allow user to record a fixed-length video in Windows Phone 7.

for example while user capturing a video if recording time passes more than 3 minutes. It should popup a message and stop the recording.

So my problem is how to check the video length(time).

I am thinking i would create a timer to calculate/check the elapsed time when user starts a video. if elapsed time goes beyond the recording limit, programatically stop the recording.

Please suggest me if anyone have better thought.

Answer 1

Having your own timer that will keep track of the recorded time is the optimal solution here, since you don't want to constantly read the file length and perform media structure manipulations to determine the length.