GstCUDA - Example - cudamux: NVMM direct mapping

GstCUDA
Features and Limitations
Supported Platforms
Evaluating GstCUDA
Building and Installation Guide
Project Structure
GstCUDA Framework
libGstCUDA API GstCUDABaseFilter GstCUDABaseMISO GstCUDABaseSIMO GstCUDABaseMIMO
GstCUDA Quick Prototyping Elements
cudafilter cudamux cudademux cudamimo
GstCUDA Algorithm Developer’s Guide
GstCUDA Add-Ons
cudadebayer
Examples
cudafilter cudafilter: NVMM direct mapping cudafilter: Unified memory allocator cudamux cudamux: NVMM direct mapping cudamux: Unified memory allocator cudadebayer opencv opencvwarp opencvfilter
Performance Profiling
Contact Us

This page gives an usage example of the cudamux element.

Problems running the pipelines shown on this page? Please see our GStreamer Debugging guide for help.

The perf element can be downloaded from this repository, otherwise, the element can be removed from the pipeline without any issues.

Mixer CUDA library algorithm

For these examples, remember to be in the correct path to use the binaries:

cd $GstCUDA_DIR/tests/examples/cudamux_algorithms/mixer/

2x 720p 30fps videotestsrc sources mixed to display (in-place=true)

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=true location=./mixer.so videotestsrc pattern=ball is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=30/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=30/1" ! queue ! cuda.sink_0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=30/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=30/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 1:04:41.509928234; Bps: 776; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:42.543376206; Bps: 751; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:43.576504024; Bps: 751; fps: 30.0; CPU: 25;  
GST-PERF INFO -->  Timestamp: 1:04:44.576590298; Bps: 776; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:45.609834937; Bps: 751; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:46.609851679; Bps: 776; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:47.609865921; Bps: 776; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:48.643290399; Bps: 751; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:49.676644357; Bps: 751; fps: 30.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:04:50.709835243; Bps: 751; fps: 30.0; CPU: 24;

2x 720p 30fps videotestsrc sources mixed to display (in-place=false)

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=false location=./mixer.so videotestsrc pattern=ball is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=30/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=30/1" ! queue ! cuda.sink_0 videotestsrc is-live=true ! "video/x-raw,width=1280,height=720,format=I420,framerate=30/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1280,height=720,format=I420,framerate=30/1" ! queue ! cuda.sink_1 cuda. ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 21:48:33.279751940; Bps: 763; fps: 32.48; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:34.279839845; Bps: 776; fps: 30.0; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:35.311903301; Bps: 751; fps: 30.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:36.312767089; Bps: 776; fps: 30.0; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:37.344449777; Bps: 752; fps: 30.6; CPU: 26;  
GST-PERF INFO -->  Timestamp: 21:48:38.344565041; Bps: 776; fps: 30.0; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:39.346374558; Bps: 775; fps: 29.97; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:40.378383451; Bps: 751; fps: 30.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:41.411104423; Bps: 751; fps: 30.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 21:48:42.411187827; Bps: 776; fps: 30.0; CPU: 24;

1080p 60fps camera stream + 1080p 60fps videotestsrc sources mixed to display (in-place=true)

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=true location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_0 videotestsrc pattern=ball is-live=true ! "video/x-raw,width=640,height=480,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 1:07:52.306338304; Bps: 763; fps: 60.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 1:07:53.306388795; Bps: 776; fps: 60.0; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:07:54.322402666; Bps: 763; fps: 60.3; CPU: 28;  
GST-PERF INFO -->  Timestamp: 1:07:55.322446073; Bps: 776; fps: 60.0; CPU: 28;  
GST-PERF INFO -->  Timestamp: 1:07:56.322744529; Bps: 776; fps: 60.0; CPU: 27;  
GST-PERF INFO -->  Timestamp: 1:07:57.340534213; Bps: 763; fps: 59.98; CPU: 25;  
GST-PERF INFO -->  Timestamp: 1:07:58.356490895; Bps: 764; fps: 60.9; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:07:59.372619293; Bps: 763; fps: 60.3; CPU: 25;  
GST-PERF INFO -->  Timestamp: 1:08:00.389454663; Bps: 763; fps: 60.3; CPU: 24;  
GST-PERF INFO -->  Timestamp: 1:08:01.406149096; Bps: 763; fps: 60.3; CPU: 22;

1080p 60fps camera stream + 1080p 60fps videotestsrc sources mixed to display (in-place=false)

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=false location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_0 videotestsrc pattern=ball is-live=true ! "video/x-raw,width=640,height=480,format=I420,framerate=60/1" ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! nvvidconv ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 22:04:56.593436486; Bps: 763; fps: 60.3; CPU: 33;  
GST-PERF INFO -->  Timestamp: 22:04:57.593838787; Bps: 776; fps: 60.0; CPU: 33;  
GST-PERF INFO -->  Timestamp: 22:04:58.609787695; Bps: 764; fps: 60.9; CPU: 32;  
GST-PERF INFO -->  Timestamp: 22:04:59.609907812; Bps: 776; fps: 60.0; CPU: 34;  
GST-PERF INFO -->  Timestamp: 22:05:00.609942878; Bps: 776; fps: 60.0; CPU: 32;  
GST-PERF INFO -->  Timestamp: 22:05:01.626993130; Bps: 763; fps: 59.98; CPU: 33;  
GST-PERF INFO -->  Timestamp: 22:05:02.627490381; Bps: 776; fps: 60.0; CPU: 35;  
GST-PERF INFO -->  Timestamp: 22:05:03.643151065; Bps: 764; fps: 60.9; CPU: 35;  
GST-PERF INFO -->  Timestamp: 22:05:04.659751376; Bps: 763; fps: 60.3; CPU: 36;  
GST-PERF INFO -->  Timestamp: 22:05:05.660301596; Bps: 776; fps: 60.0; CPU: 36;

2x 1080p 60fps camera streams mixed to display (in-place=true)

Note: We only use one camera source that is split into two sources by a tee element. One of the video source input branches is flipped by 180 degrees, so the resultant image is a combination of the input image with the same image rotated.

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=true location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! tee name=t t.src_0 ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_0 t.src_1 ! nvvidconv flip-method=2 ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 1:09:00.057598052; Bps: 776; fps: 60.0; CPU: 7;  
GST-PERF INFO -->  Timestamp: 1:09:01.058253501; Bps: 776; fps: 60.0; CPU: 15;  
GST-PERF INFO -->  Timestamp: 1:09:02.073875844; Bps: 764; fps: 60.9; CPU: 13;  
GST-PERF INFO -->  Timestamp: 1:09:03.073878080; Bps: 776; fps: 60.0; CPU: 14;  
GST-PERF INFO -->  Timestamp: 1:09:04.074694842; Bps: 776; fps: 60.0; CPU: 13;  
GST-PERF INFO -->  Timestamp: 1:09:05.090132409; Bps: 764; fps: 60.9; CPU: 13;  
GST-PERF INFO -->  Timestamp: 1:09:06.090189398; Bps: 776; fps: 60.0; CPU: 12;  
GST-PERF INFO -->  Timestamp: 1:09:07.091822777; Bps: 775; fps: 59.94; CPU: 15;  
GST-PERF INFO -->  Timestamp: 1:09:08.108071701; Bps: 763; fps: 60.3; CPU: 12;  
GST-PERF INFO -->  Timestamp: 1:09:09.123598348; Bps: 764; fps: 60.9; CPU: 14;

2x 1080p 60fps camera streams mixed to display (in-place=false)

Note: We only use one camera source that is split into two sources by a tee element. One of the video source input branches is flipped by 180 degrees, so the resultant image is a combination of the input image with the same image rotated.

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=false location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! tee name=t t.src_0 ! nvvidconv ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_0 t.src_1 ! nvvidconv flip-method=2 ! "video/x-raw(memory:NVMM),width=1920,height=1080,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! nvvidconv ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 22:29:36.540394267; Bps: 776; fps: 60.0; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:37.557019712; Bps: 763; fps: 60.3; CPU: 27;  
GST-PERF INFO -->  Timestamp: 22:29:38.573266100; Bps: 763; fps: 60.3; CPU: 27;  
GST-PERF INFO -->  Timestamp: 22:29:39.589838109; Bps: 763; fps: 60.3; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:40.589912895; Bps: 776; fps: 60.0; CPU: 25;  
GST-PERF INFO -->  Timestamp: 22:29:41.590099450; Bps: 776; fps: 60.0; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:42.590126059; Bps: 776; fps: 60.0; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:43.590282250; Bps: 776; fps: 60.0; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:44.606635721; Bps: 763; fps: 60.3; CPU: 26;  
GST-PERF INFO -->  Timestamp: 22:29:45.606758423; Bps: 776; fps: 60.0; CPU: 25;

2x 4K 60fps camera streams camera streams mixed to display (in-place=true)

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=true location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! tee name=t t.src_0 ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! queue ! cuda.sink_0 t.src_1 ! nvvidconv flip-method=2 ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! nvoverlaysink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 1:09:53.580481344; Bps: 776; fps: 60.0; CPU: 16;  
GST-PERF INFO -->  Timestamp: 1:09:54.596964159; Bps: 763; fps: 60.3; CPU: 18;  
GST-PERF INFO -->  Timestamp: 1:09:55.612936985; Bps: 764; fps: 60.9; CPU: 17;  
GST-PERF INFO -->  Timestamp: 1:09:56.613082828; Bps: 776; fps: 60.0; CPU: 20;  
GST-PERF INFO -->  Timestamp: 1:09:57.622503818; Bps: 769; fps: 59.46; CPU: 18;  
GST-PERF INFO -->  Timestamp: 1:09:58.634003692; Bps: 767; fps: 59.34; CPU: 18;  
GST-PERF INFO -->  Timestamp: 1:09:59.646157364; Bps: 766; fps: 59.28; CPU: 16;  
GST-PERF INFO -->  Timestamp: 1:10:00.657026108; Bps: 768; fps: 59.40; CPU: 15;  
GST-PERF INFO -->  Timestamp: 1:10:01.667696004; Bps: 768; fps: 59.40; CPU: 18;  
GST-PERF INFO -->  Timestamp: 1:10:02.680801291; Bps: 766; fps: 59.23; CPU: 17;

2x 4K 60fps camera streams mixed to fakesink (in-place=false)

Note: Due to limitations of the nvoverlaysink element, we use a fakesink instead to demonstrate that cudamux is capable to handle up to 2x4K@60fps streams.

Example pipeline

gst-launch-1.0 cudamux name=cuda in-place=false location=./mixer.so nvcamerasrc queue-size=10 sensor-id=0 fpsRange='60 60' ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! tee name=t t.src_0 ! nvvidconv ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! queue ! cuda.sink_0 t.src_1 ! nvvidconv flip-method=2 ! "video/x-raw(memory:NVMM),width=3840,height=2160,format=I420,framerate=60/1" ! queue ! cuda.sink_1 cuda. ! perf print-arm-load=true ! fakesink --gst-debug=0

Performance stats

GST-PERF INFO -->  Timestamp: 22:36:03.257382576; Bps: 12318415; fps: 59.40; CPU: 28;  
GST-PERF INFO -->  Timestamp: 22:36:04.269501023; Bps: 12294071; fps: 59.28; CPU: 28;  
GST-PERF INFO -->  Timestamp: 22:36:05.280928748; Bps: 12306231; fps: 59.34; CPU: 29;  
GST-PERF INFO -->  Timestamp: 22:36:06.292548867; Bps: 12306231; fps: 59.34; CPU: 30;  
GST-PERF INFO -->  Timestamp: 22:36:07.304494555; Bps: 12306231; fps: 59.34; CPU: 33;  
GST-PERF INFO -->  Timestamp: 22:36:08.314887239; Bps: 12318415; fps: 59.40; CPU: 32;  
GST-PERF INFO -->  Timestamp: 22:36:09.327312506; Bps: 12294071; fps: 59.28; CPU: 31;  
GST-PERF INFO -->  Timestamp: 22:36:10.340253028; Bps: 12294071; fps: 59.28; CPU: 30;  
GST-PERF INFO -->  Timestamp: 22:36:11.351945386; Bps: 12306231; fps: 59.34; CPU: 33;  
GST-PERF INFO -->  Timestamp: 22:36:12.361623391; Bps: 12330624; fps: 59.46; CPU: 31;