[gst-devel] Performance with gst-launch pipeline and playbin

[Stefan Kost]

hi,


Manish Sharma schrieb:
> Hi All,
>  
> While using the playbin for playback I am observing more CPU usage as
> compared to gstreamer customized pipeline.
> I know that playbin adds some preroll queue before audio video sink.
> But will it add so much of CPU usage.
> I have used 'top' utility to check the CPU usage.
>  
> Basically there are two commands which we have used:
>  
> 1) with playbin
>  
> gst-launch playbin uri=file:///media/sdmmc0p1/Comebacks.avi
>  
> 2) with gst-launch specific pipeline
>  
> gst-launch filesrc location=/media/sdmmc0p1/Comebacks.avi ! avidemux
> name=demux { demux.audio_00 ! queue ! omx_mp3dec ! alsasink } {
> demux.video_00 ! queue ! omx_h264dec ! xvimagesink }
>  
> with (1) we are getting around 20% more CPU consumption wrt (2).
>  
>  
> I need one more info is there any way to dump the pipeline created
> using playbin? I know GST_DEBUG=GST_ELEMENT_FACTORY:3 & GST_DEBUG=*:3.
> If there is any specific flag which can give me only the pipeline
> elements and their connection.
>  
you can use "gst-launch -v ..." or you can use
GST_DEBUG_DUMP_DOT_DIR=<path> gst-launch ... and convert the generated
dot files to e.g. png with "dot"

Stefan
> Regards,
> Manish
>  
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