Recorded avi is played too fast

I am actually using Labview 8.6 with NI Vision Acquisition Software and USB camera. I made an application, that simply captures the images from the camera and write them to avi file. The issue is that when I want to play recorded movie, it goes like fast forward during play.
Example: I record 10s movie and when I play it, the length is shortened to 5s and it goes like fast-forward.
Anyone had similar issue?? Thank you in advance for your help!!

Hi Chaded,
I've had a look at your code and set it up with a camera at my end. It seems that although the fps is set within the express VI, it is not always operating at that rate. This makes it difficult to synchronise the two parts of your code. So what we can do is create a producer consumer architecture that will solve this issue. Iv attached the standard Producer/Consumer to this post so you can build onto that.
To explain the concept of a Producer/Consumer first. It works because it has two loops, which can run at different rates. The aptly named producer loop "produces" the data, and places this data into a queue. This is then "consumed" or "processed" within the consumer loop.
So specific to your application. You will need to build your image acquisition into the producer loop, running at X fps, then in the consumer loop you will need to set up the build .avi functionality as you have in your previous example again running at the same X fps.
Post back if you have any more questions.
Richard S
Applications Engineer
Certified LabVIEW Associate Developer
National Instruments UK&Ireland
Attachments:
ProducerConsumer.vi ‏12 KB

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