Unsolved Camera and VideoOutput. Only 15 fps instead of 30 fps. Why?
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Hi,
I am developing a QML application on a Raspberry Pi 3.
I am using Camera with VideoOutput.
There I set the resoultion and the framerate.camera.viewfinder.resolution = "640x480" camera.viewfinder.maximumFrameRate = 30 camera.viewfinder.minimumFrameRate = 30
But I only get 15 frames/sec.
What could be the reason that I only receive 15 frames/sec?
Any ideas?Kind regards,
MHermann -
Hi,
What camera is that ?
Can it sustain that frame rate ? -
@SGaist : This is a EPL camera.
Yes. This camera does sustain this. It runs with 640x480 and 30 fps.
But nevertheless I get only 15 fps.
Is QML slow or is the Raspian Pi 3 to slow?
Or are there other possible reasons? -
Can you check with gstreamer directly what performance you get from the camera ?
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@SGaist : Sorry for the late answer...
How can I check the performance with gstreamer? -
I just ran my application on a PC with Ubuntu 16.04.
There I get 30 fps.
Does this mean that the Rapsberry Pi itself is too slow and I will never get all 30 fps? -
Does this mean that the Rapsberry Pi itself is too slow and I will never get all 30 fps?
Well, that might really be the case. Maybe this questions is better suited in a raspberry forum?
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You can't compare a multicore > 3GHz desktop machine with an embedded system like the quad core RPi3 which clocks a bit more that 1GHz.
Like I suggested, run
gst-launch
to see what you can get from your camera.