Is video playback benchmark possible with Gstreamer ?

[tapas kundu]

Hi
 I want to play video at highest speed without displaying video window. I want to see the frame  rate ,CPU usage etc for video.

Please suggest me how to proceed. I am beginner user of gstreamer.

Thanks in advance .
Navik

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[Tim-Philipp Müller-2]

On Sun, 2009-10-18 at 16:01 +0530, tapas kundu wrote:

>  I want to play video at highest speed without displaying video
> window. I want to see the frame  rate ,CPU usage etc for video.
>
> Please suggest me how to proceed. I am beginner user of gstreamer.

You could use fakesink sync=false instead of a videosink, which won't
show you framerate etc. though. FWIW, the latest gst-plugins-bad release
also contains a fpsdisplaysink, but this will still show a video window
unless you change the code to make it use fakesink.

Cheers
 -Tim



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[Arnout Vandecappelle]

On Sunday 18 Oct 2009 12:31:57 tapas kundu wrote:
> Hi
>  I want to play video at highest speed without displaying video window. I
> want to see the frame  rate ,CPU usage etc for video.

 If you have your own application, you can easily use a pipeline ending with
fakesink and do something in the have-buffer callback of the fakesink.  You
can even play around with QoS by setting qos=true and sync=true on the
fakesink.  Attached is some code for the have-buffer callback.

 If you're calling gst-launch on the command line and can't be bothered with
creating an application, and accuracy is not essential, then you can do
something like this:

BUFFERS=...
LOGFILE=/tmp/log$$
gst-launch uridecodebin uri=... ! fakesink num-buffers=$BUFFERS > $LOGFILE
TIME=$(sed -n 's/Execution ended after \([0-9]*\)[0-9][0-9][0-9] ns./\1/p' \
           $LOGFILE)
echo FPS: $(( $BUFFERS * 1000000 / $TIME ))

 Regards,
 Arnout

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