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4 Appendix B

  • To check the link status, resolution and video node of HDMI input source, run below xmedia-ctl command.
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$ xmedia-ctl -p -d /dev/media0

When HDMI source is connected to 4KP60 resolution, it shows:

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root@zcu106_vcu_trd:/media/card# xmedia-ctl -p -d /dev/media0
Media controller API version 4.19.0

Media device information
------------------------
driver          xilinx-video
model           Xilinx Video Composite Device
serial          
bus info        
hw revision     0x0
driver version  4.19.0

Device topology
- entity 1: vcap_hdmi output 0 (1 pad, 1 link)
            type Node subtype V4L flags 0
            device node name /dev/video0 -----> Video node for HDMI Rx source
        pad0: Sink
                <- "a0080000.v_proc_ss":1 [ENABLED]

- entity 5: a0080000.v_proc_ss (2 pads, 2 links)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev0
        pad0: Sink
                [fmt:VYYUYY8_1X24/3840x2160 field:none]
                <- "a0000000.v_hdmi_rx_ss":0 [ENABLED]
        pad1: Source
                [fmt:VYYUYY8_1X24/3840x2160 field:none]
                -> "vcap_hdmi output 0":0 [ENABLED]

- entity 8: a0000000.v_hdmi_rx_ss (1 pad, 1 link)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev1
        pad0: Source
                [fmt:VYYUYY8_1X24/3840x2160 field:none colorspace:rec709]
                [dv.caps:BT.656/1120 min:0x0@25000000 max:4096x2160@297000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custo]
                [dv.detect:BT.656/1120 3840x2160p60 (4400x2250) stds:CEA-861 flags:CE-video] -----> Resolution and Frame-rate of HDMI Rx source 
                -> "a0080000.v_proc_ss":0 [ENABLED]

NOTE: Check resolution and frame-rate of "dv.detect" under "v_hdmi_rx_ss" node.

When the HDMI source is not connected, it shows:

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root@zcu106_vcu_trd:/media/card# xmedia-ctl -p -d /dev/media0
Media controller API version 4.19.0

Media device information
------------------------
driver          xilinx-video
model           Xilinx Video Composite Device
serial          
bus info        
hw revision     0x0
driver version  4.19.0

Device topology
- entity 1: vcap_hdmi output 0 (1 pad, 1 link)
            type Node subtype V4L flags 0
            device node name /dev/video0 -----> Video node for HDMI Rx source
        pad0: Sink
                <- "a0080000.v_proc_ss":1 [ENABLED]

- entity 5: a0080000.v_proc_ss (2 pads, 2 links)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev0
        pad0: Sink
                [fmt:VYYUYY8_1X24/3840x2160 field:none]
                <- "a0000000.v_hdmi_rx_ss":0 [ENABLED]
        pad1: Source
                [fmt:VYYUYY8_1X24/3840x2160 field:none]
                -> "vcap_hdmi output 0":0 [ENABLED]

- entity 8: a0000000.v_hdmi_rx_ss (1 pad, 1 link)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev1
        pad0: Source
                [fmt:VYYUYY8_1X24/3840x2160 field:none colorspace:rec709]
                [dv.caps:BT.656/1120 min:0x0@25000000 max:4096x2160@297000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custo]
                [dv.query:no-link] -----> HDMI Rx Link Status
                -> "a0080000.v_proc_ss":0 [ENABLED]

NOTE: Here "dv.query:no-link" under "v_hdmi_rx_ss" node shows HDMI-Rx source is not connected or HDMI-Rx source is not active(Try waking up the device by pressing the key on remote).


Follow the below steps to switch the

Notes for gst-launch-1.0 commands:

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Common Configuration : START Num Of Input : 1 Output : HDMI Out Type : Display Frame Rate : 60 Exit Input Configuration : START Input Num : 1 Input Type :
  • Make sure the HDMI-Rx
  • resolution from 1080p60 to 4kp60.
    • Check current HDMI Input Source Resolution (1080p60) by following the above-mentioned steps.
    • Run vcu_gst_app for current HDMI resolution (1080p60) by executing the following command.
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$ vcu_gst_app /media/card/config/input.cfg

Below configurations needs to be set in input.cfg for HDMI-1080p60.

  • media pipeline is configured for 4kp60 resolution and source/sink has the same color format. Run below xmedia-ctl commands to set the resolution and format of the HDMI scaler node.

When HDMI Input Source is NVIDIA SHIELD

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$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":0  [fmt:RBG888_1X24/3840x2160 field:none]"
$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/3840x2160 field:none]"

NOTE: Make sure NVIDIA SHIELD is configured for 4kp resolution and RGB888 color format.

When HDMI Input Source is ABOX

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$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":0  [fmt:VYYUYY8_1X24/3840x2160 field:none]"
$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/3840x2160 field:none]"

NOTE: Make sure ABOX is configured for 4kp resolution and VYYUYY8 color format.


  • Follow the below steps to switch the HDMI-Rx resolution from 1080p60 to 4kp60.
    • Check current HDMI Input Source Resolution (1080p60) by following the above-mentioned steps.
    • Run vcu_gst_app for current HDMI resolution (1080p60) by executing the following command.
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$ vcu_gst_app /media/card/config/input.cfg

Below configurations needs to be set in input.cfg for HDMI-1080p60.

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Common Configuration    : START
Num Of Input            : 1
Output                  : HDMI
Out Type                : Display
Frame Rate              : 60
Exit

Input Configuration     : START
Input Num               : 1
Input Type              : hdmi
Raw                     : TRUE
Width                   : 1920
Height                  : 1080
Exit
    • Change Resolution of HDMI Input Source from 1080p60 to 4kp60 by following the below steps.
      • Set the HDMI source resolution to 4kp60 (Home page → settings → display & Sound → Resolution → change to 4kp60).
      • Save the configuration to take place the change.
    • Verify the desired HDMI Input Source Resolution (4kp60) by following the above-mentioned steps.
  • If HDMI Tx link-up issue is observed after Linux booting, use the following command:
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$ modetest -D a0070000.v_mix -s 40:3840x2160-60@BG24 -w 36:"alpha":0 
  • Run the following gst-launch-1.0 command to display raw HDMI video using the GStreamer pipeline.
$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! queue ! kmssink bus-id="a0070000.v_mix"
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$ modetest -D a0070000.v_mix -s 40:3840x2160-60@BG24 -w 36:"alpha":0 
  • Run the following gst-launch-1.0 command to display processed(capture → encode → decode → display) command to display raw HDMI video using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500queue ! kmssink bus-id="a0070000.v_mix"
  • Run the following gst-launch-1.0 command to display processed(capture → encode → decode → display) HDMI video using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-h265raw, profilewidth=main3840, alignmentheight=au ! h265parse2160, format=NV12, framerate=60/1 ! omxh265decomxh265enc internal-entropy-buffers=5 low-latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a0070000.v_mix" sync=true" sync=true
  • Run the following gst-launch-1.0 command to record HDMI video using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 ! video/x-rawh265, formatprofile=NV12main,width=3840,height=2160,framerate=60/1 alignment=au ! h265parse ! omxh265encomxh265dec qpinternal-entropy-modebuffers=auto5 goplow-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a0070000.v_mix" sync=true" sync=true
  • Run the following gst-launch-1.0 command to record HDMI video using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-h265, profile=main, alignment=auraw, format=NV12,width=3840,height=2160,framerate=60/1 ! h265parse ! queue ! mpegtsmux alignment=7 name=mux ! filesink location="/run/test.ts"

NOTE: File location should be USB-3.0 to avoid the read-write bandwidth issue.

  • Run the following gst-launch-1.0 command to play the recorded file using the GStreamer pipeline.
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$ gst-launch-1.0 uridecodebin uri="file:///run/test.ts" ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a0070000.v_mix""omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 ! video/x-h265, profile=main, alignment=au ! h265parse ! queue ! mpegtsmux alignment=7 name=mux ! filesink location="/run/test.ts"

NOTE: File location should be USB-3.0 to avoid the read-write bandwidth issue.

  • Run the following gst-launch-1.0 command to stream-out HDMI video play the recorded file using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 periodicity-idr=60 gst-launch-1.0 uridecodebin uri="file:///run/test.ts" ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a0070000.v_mix""

NOTE: File location should be USB-3.0 to avoid the read-write bandwidth issue.

  • Run the following gst-launch-1.0 command to stream-out HDMI video using the GStreamer pipeline.
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$ gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-h265raw, profile=main-422-10format=NV12, alignmentwidth=au ! h265parse ! queue ! mpegtsmux alignment=7 name=mux ! rtpmp2tpay ! udpsink host=192.168.25.89 port=5004

NOTE: Here 192.168.25.89 is host/client IP address and 5004 is port no.

  • Run the following gst-launch-1.0 command to display stream-in video using the Gstreamer pipeline where 5004 is port no.
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$ gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, clock-rate=90000" ! rtpjitterbuffer latency=1000 ! rtpmp2tdepay ! tsparse ! video/mpegts ! tsdemux name=demux ! queue ! h265parse ! omxh265dec internal-entropy-buffers=5 low-latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a00c0000.v_mix" " sync=true
Note: Low latency stream pipeline cannot be launched with vcu-gst-app. Hence use below gst-launch pipelines
3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 periodicity-idr=60 ! video/x-h265, profile=main-422-10, alignment=au ! h265parse ! queue ! mpegtsmux alignment=7 name=mux ! rtpmp2tpay ! udpsink host=192.168.25.89 port=5004

NOTE: Here 192.168.25.89 is host/client IP address and 5004 is port no.

  • Run the following gst-launch-1.0 command for low-latency stream-out pipeline. Where "videoX" indicates a video node for the input sourceto display stream-in video using the Gstreamer pipeline where 5004 is port no.
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$ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=low-latency prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 periodicity-idr=60 ! video/x-h265, profile=main, alignment=nal ! queue ! mpegtsmux alignment=7 name=mux ! rtpmp2tpay ! udpsink host=192.168.26.89 port=5004
NOTE:Here 192.168.26.89 is host/client IP address and 5004 is port no
0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, clock-rate=90000" ! rtpjitterbuffer latency=1000 ! rtpmp2tdepay ! tsparse ! video/mpegts ! tsdemux name=demux ! queue ! h265parse ! omxh265dec internal-entropy-buffers=5 low-latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink text-overlay=false video-sink="kmssink bus-id="a00c0000.v_mix" " sync=true

Note: Low latency stream pipeline cannot be launched with vcu-gst-app. Hence use below gst-launch pipelines.

  • Run the following gst-launch-1.0 command to display for low-latency stream-in on HDMI-Tx video using the Gstreamer pipeline where 5004 is port no.out pipeline. Where "videoX" indicates a video node for the input source
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$ gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, clock-rate=90000" ! rtpjitterbuffer latency=1000 ! rtpmp2tdepay ! tsparse ! video/mpegts ! tsdemux name=demux ! queue ! h265parse ! video/x-h265, profile=main, alignment=nal ! omxh265dec internal-entropy-buffers=5 low-latency=1 ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

Notes for gst-launch-1.0 commands:

  • Make sure the HDMI-Rx media pipeline is configured for 4kp60 resolution and source/sink has the same color format. Run below xmedia-ctl commands to set the resolution and format of the HDMI scaler node.

When HDMI Input Source is NVIDIA SHIELD

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$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":0  [fmt:RBG888_1X24/3840x2160 field:none]"
$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/3840x2160 field:none]"

NOTE: Make sure NVIDIA SHIELD is configured for 4kp resolution and RGB888 color format.

When HDMI Input Source is ABOX

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$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":0  [fmt:VYYUYY8_1X24/3840x2160 field:none]"
$ xmedia-ctl -d /dev/media0 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/3840x2160 field:none]"
NOTE: Make sure ABOX is configured for 4kp resolution and VYYUYY8 color format.
$ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=low-latency prefetch-buffer=true low-bandwidth=false filler-data=true cpb-size=1000 initial-delay=500 periodicity-idr=60 ! video/x-h265, profile=main, alignment=nal ! queue ! mpegtsmux alignment=7 name=mux ! rtpmp2tpay ! udpsink host=192.168.26.89 port=5004

NOTE:Here 192.168.26.89 is host/client IP address and 5004 is port no.

  • Run the following gst-launch-1.0 command to display low-latency stream-in on HDMI-Tx video using the Gstreamer pipeline where 5004 is port no.
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$ gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, clock-rate=90000" ! rtpjitterbuffer latency=1000 ! rtpmp2tdepay ! tsparse ! video/mpegts ! tsdemux name=demux ! queue ! h265parse ! video/x-h265, profile=main, alignment=nal ! omxh265dec internal-entropy-buffers=5 low-latency=1 ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"