[gst-devel] fpsdisplaysink usage

[pl bossart]

Hi Raghu,
there was a post a long time back on this. Search for '[gst-devel] how
to determine fps of a camera pipeline'

Excerpt below:
"Indeed, advised/requested fps might not always be the real one. For
measuring it, i use a trick: i place a videorate with arbitrary caps
after the source, and measure the dropped/duplicated frames to
determine the real framerate. You can see and exemple at [1].
[1] http://code.google.com/p/gst-plugins-elphel/source/browse/trunk/tests/test_elphel_perf.py"

This might do for the time being?
Cheers
-Pierre

On Thu, Apr 15, 2010 at 5:19 AM, Raghavendra Hebbalalu
<hs.raghavendra at gmail.com> wrote:
> The error I get when I use ./configure for gst-bad-plugins 10.18 is
> "Requested gstreamer-0.10 >= 0.10.27" but version of Gstreamer is 10.25".
> I will try moving to 10.27 or use other approaches to measure fps.
> Regards,
> -Raghavendra
>
> On Wed, Apr 14, 2010 at 2:10 PM, Stefan Kost <ensonic at hora-obscura.de>
> wrote:
>>
>> Raghavendra Hebbalalu wrote:
>> > Hi,
>> > Thanks for the response. I did send that mail to the gst-devel mailing
>> > list - but did not get any reply.
>> Patience :)
>> > I am copying this mail to gstreamer-devel as well.
>> > What I need is the rendering fps. It would also be good if I get the
>> > max fps of the decoder as well.
>> regarding max fps, you can use the fakesink sync=false approach I
>> suggested, given you know the number-of-frames in the video (should be
>> long enought to shadow pipeline startup time).
>> >
>> > My problem with the gst-plugins-bad v0.10.18 is that it gets out of
>> > the configure step complaining that it needs gst-launch version
>> > greater than 0.10.27. This doesn't happen when I use bad plugins 10.17.
>> I am quite sure that configure does *not* check the version of
>> get-launch. Please show the error message that you get here.
>>
>> Stefan
>> >
>> > Can I just comment that out in configure and proceed? Would
>> > fpsdisplaysink still work?
>> >
>> > Thanks,
>> > -Raghavendra
>> >
>> >
>> > On Tue, Apr 13, 2010 at 5:06 PM, <Stefan.Kost at nokia.com
>> > <mailto:Stefan.Kost at nokia.com>> wrote:
>> >
>> >     Hi,
>> >
>> >     >-----Original Message-----
>> >     >From: ext Raghavendra Hebbalalu [mailto:hs.raghavendra at gmail.com
>> >     <mailto:hs.raghavendra at gmail.com>]
>> >     >Sent: 13 April, 2010 07:39
>> >     >To: Ali Zeeshan (Nokia-D/Helsinki); Kost Stefan (Nokia-D/Helsinki)
>> >     >Subject: fpsdisplaysink usage
>> >     >
>> >     >Hi,
>> >     >I found your name on the fpsdisplaysink man page.
>> >
>> >     Still you should send those mails to e.g. the gstreamer-devel
>> >     mailing list or ask on irc.
>> >
>> >     >
>> >     >It looks like fpsdisplaysink is found only with gst-bad-plugins
>> > 10.18
>> >     >and beyond. Am I right?
>> >
>> >     Yes.
>> >
>> >     >
>> >     >When I tried building it on my system, I couldn't go beyond the
>> >     >configure phase as this needed gst-launch versions >= 10.27.
>> >
>> >     Nothing there checks for the version of gst-launch. What is the
>> >     error that you are seeing?
>> >
>> >     Stefan
>> >
>> >     >
>> >     >Currently, I am forced to use gst-launch 10.27 in our environment.
>> > I
>> >     >then used the bad-plugins 10.17 - but that did not have
>> >     fpsdisplaysink.
>> >     >
>> >     >Can you let me know how I can measure video frame rate via
>> >     gst-launch?
>> >     >What are the plugins? Where can I make the change to measure fps
>> >     via a
>> >     >plugin?
>> >
>> >     What do you want to meassure? The rendering fps? The max
>> >     achievable fps of a decoder?
>> >
>> >     Stefan
>> >     >
>> >     >Your help is greatly appreciated.
>> >     >
>> >     >Thanks,
>> >     >-Raghavendra
>> >
>> >
>> > ------------------------------------------------------------------------
>> >
>> >
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> ------------------------------------------------------------------------------
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> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
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