Use VideoWriter class to save video in mp4 container.

asked 2014-03-19 12:48:41 -0600

us62
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updated 2014-03-19 13:06:35 -0600

berak
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From the openCV documentation i found out that it only supports avi container to store video captured from the webcam. Is there a way where I can use an mp4 container?

answered 2014-03-19 13:00:16 -0600

xaffeine
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OpenCV does not include state-of-the-art compression capability. The best approach may be to store in AVI and then recode offline to the format you want. Or, use a separate compression library.

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My problem is that the video captured from the camera, if stored in an avi container, will lose the timestamp information since avi format does not support it. I need presentation timestamps for each frame.

us62 ( 2014-03-19 13:10:35 -0600 )edit

You might need to use an actual video-capture toolkit. OpenCV does not have a priority on detailed capture-device support. What platform and type of camera are you using?

xaffeine ( 2014-03-19 16:59:18 -0600 )edit

I am using C++ and a microsoft HD webcam...i need some way to have timestamps for each frame that i capture

us62 ( 2014-03-21 13:00:02 -0600 )edit

I'm not sure it's 100% possible. You will probably have to use one of the Microsoft API. I've had trouble getting accurate time stamps. I suspect most people create them based on a system clock.

xaffeine ( 2014-03-21 14:16:13 -0600 )edit

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Use VideoWriter class to save video in mp4 container.