GStreamer pipelines for i.MX6 and i.MX8 with GstQtOverlay
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Contents
i.MX6 Platform
Before running the examples below, make sure you have set up the environment correctly.
export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
export QT_QPA_PLATFORM=eglfs
export DISPLAY=:0.0
Now, you are able to run the following examples:
Display a text overlay
gst-launch-1.0 videotestsrc is-live=true ! 'video/x-raw, width=640, height=480, framerate=30/1' ! queue ! imxg2dvideotransform ! \ queue ! qtoverlay qml=/main.qml ! queue ! imxeglvivsink qos=false sync=false enable-last-sample=false
Saving a video with a text overlay
gst-launch-1.0 videotestsrc is-live=true ! 'video/x-raw, width=640, height=480, framerate=30/1' ! queue ! imxg2dvideotransform ! \ queue ! qtoverlay qml=/main.qml ! queue ! imxipuvideotransform input-crop=false ! \ capsfilter caps=video/x-raw,width=640,height=480,format=NV12 ! imxvpuenc_h264 bitrate=4000 gop-size=15 idr-interval=15 ! \ capsfilter caps=video/x-h264 ! mpegtsmux alignment=7 ! queue ! filesink location=test.mp4 -e
Network streaming with a text overlay
Send stream to a host with IP address $IP
On the IMX6: video source
gst-launch-1.0 videotestsrc is-live=true ! 'video/x-raw, width=640, height=480, framerate=30/1' ! queue ! imxg2dvideotransform ! \ queue ! qtoverlay qml=/main.qml ! queue ! imxipuvideotransform input-crop=false ! \ capsfilter caps=video/x-raw,width=640,height=480,format=NV12 ! imxvpuenc_h264 bitrate=4000 gop-size=15 idr-interval=15 ! \ capsfilter caps=video/x-h264 ! mpegtsmux alignment=7 ! queue ! udpsink async=false sync=false host=$IP port=5012
On the host: video receptor
gst-launch-1.0 udpsrc address=$IP port=5012 ! queue ! tsdemux ! identity single-segment=true ! queue ! decodebin ! \ queue ! fpsdisplaysink sync=false -v
i.MX8 Platform
IMX8 examples
Before running the examples below, make sure you have set up the environment correctly.
export QT_QPA_PLATFORM=wayland
export DISPLAY=:0.0
Now, you are able to run the following examples:
Save a video overlay using a video test source
gst-launch-1.0 videotestsrc is-live=1 ! "video/x-raw,width=1920,height=1080,format=RGBA" ! qtoverlay qml=main.qml ! vpuenc_h264 ! avimux ! filesink location=video.avi -e
Save a video overlay using a camera source
gst-launch-1.0 v4l2src device=/dev/video1 ! imxvideoconvert_g2d ! "video/x-raw,format=RGBA" ! qtoverlay qml=gst-libs/gst/qt/main.qml ! perf ! vpuenc_h264 ! avimux ! filesink location=video.avi -e
