Hello everybody,
I am using Labview to capture from two (different) Firewire cameras. This works in principle, but I have the following problems:
1. The first camera is set to 15 fps, the second is set to 30fps using the Measurements and Automation Explorer.
I think the first camera works properly. (I am blending a timestamp into the image to check this and I use the CalculateFPS.vi found from the NI Imaqdx examples)
With the second camera I can select 15, 30, 60 fps. However if I select 30 fps or more the Measurement and Automation Explorer displays only 25/25 in the lower right corner.
I think Labview then grabs with this 25/25 framerate, because the video is played to fast afterwards.
2. The framerate of the problematic camera is very instable and high at the start of image acquisition. Like 70 fps then falls down to the normal level. The captured avi has therefor several seconds more of playtime. Playing the avi you have like accelerated time at start.
These problems as you may have sugested don't occur in the live image but only in the captured avi.
The time synchronisation is crucial for our application, so I'd appreciate any hint.
regards,
Chris
