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

[Manish Sharma]

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.

Regards,
Manish
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