The following section describes some relevant performance measurements during video stabilization for a few standard resolutions. It begins with a summary of the results detailed on the following sections, as well as the pipelines used to capture such results.

Summary

Benchmarking

Standalone element

Pipeline

All the measurements bellow where made using the following minimal pipeline.

PATH_TO_FILE=path_to_file.rgba
WIDTH=1920
HEIGHT=1080
FRAME_SIZE=$(($WIDTH * $HEIGHT * 4))

gst-launch-1.0  filesrc location=$PATH_TO_FILE blocksize=$FRAME_SIZE ! videoparse format=rgba width=$WIDTH height=$HEIGHT ! nvstabilize ! fakesink sync=true

CPU

Resolution	CPU 0	CPU 1	CPU 2	CPU 3	CPU4	CPU5	Average (reported by top)
640x480@25Fps	0.52	11.6	18.54	0.14	3.61	0.71	21.9
1280x720@25Fps	4.7	49.3	40	1.28	12.5	1.21	38.2
1920x1080@25Fps	418	34.23	34	2.8	3.11	1.73	76.6
2048×1080@25Fps	4.13	65.22	61.4	2.86	1.86	1.52	116

GPU

Resolution	GPU
640x480@25Fps	1.64
1280x720@25Fps	3.57
1920x1080@25Fps	8.26
2048×1080@25Fps	9.43

RAM

Resolution	RAM
640x480@25Fps	1199/7861MB
1280x720@25Fps	1230/7861MB
1920x1080@25Fps	1307/7861MB
2048×1080@25Fps	1317/7861MB

RAM consumption for different resolutions.

Glass-to-glass latency

Latency was measured as shown in the picture, and the following are the approximate results. It is important to notice that latency can be affected by the parameters selected on the pipeline, specifically the queue-size property of the gst-nvstabilize element, as further explained on the User Guide. The pipeline used was the following:

gst-launch-1.0 v4l2src device=/dev/video0 ! 'video/x-raw,width=1280,height=720' ! nvvidconv ! 'video/x-raw(memory:NVMM),width=1280,height=720,format=RGBA'  ! nvvidconv ! queue max-size-buffers=1 leaky=downstream ! nvstabilize queue-size=5 ! nvvidconv ! nvoverlaysink sync=false

1280x720@30Fps

queue-size	Latency (ms)
No stabilizer	140.8
1	254
2	258
3	288
4	328.8
5	412.6
6	412

Latency measurements varying queue size.

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Index

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