how to measure framerate output from source

[Michael Gruner]

Hi there,

You could use fpsdisplaysink, that'll print out the number of frames per 
second.

On the other hand, v4l2src is a live source. If you are not planning to 
synchronize with audio or something similar I don't see a problem 
setting "sync=false" on your sink. You could also try increasing 
"max-lateness", but I'd turn off sync.

Michael

On 07/23/2014 08:42 AM, Federico Pepe wrote:
>
> Z
>
> Il 23/lug/2014 16:24 "yoyosuper8" <yoyosuper8 at yahoo.com 
> <mailto:yoyosuper8 at yahoo.com>> ha scritto:
>
>     Hello, I'm trying to find a way to measure the number of frames
>     provided by
>     v4l2src. When I'm testing the pipeline, I use videotestsrc and I
>     think that
>     videotestsrc is providing a higher amount of frames than v4l2src.
>     I know
>     that videotestsrc is different from v4l2src because v4l2src is
>     actually
>     connecting to the hardware. I'm just looking for a way to measure
>     the amount
>     of frames v4l2src is outputting.
>
>     Here is my pipeline:
>     v4l2src ! videoconvert ! eglglessink name=videosink
>
>     I'm using gstreamer 1.2. I can't upgrade to 1.4 due to my current
>     requirements.
>     Also, when I switch back to v4l2src, eglglessink states in the
>     logs that
>     frames are being dropped. When I add the property sync=false, that
>     stops.
>
>     Any suggestions are appreciated.
>
>
>
>
>     --
>     View this message in context:
>     http://gstreamer-devel.966125.n4.nabble.com/how-to-measure-framerate-output-from-source-tp4668043.html
>     Sent from the GStreamer-devel mailing list archive at Nabble.com.
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