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root@zcu106_vcu_trd:/media/card# xmedia-ctl -p -d /dev/mediaX
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-subdev21
        pad0: Sink
                [fmt:RBG888_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-subdev22
        pad0: Source
                [fmt:RBG888_1X24/3840x2160 field:none colorspace:srgb]
                [dv.caps:BT.656/1120 min:0x0@25000000 max:4096x2160@297000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-blanking,custom]
                [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 a key on remote).

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


    Notes for gst-launch-1.0 commands:

    • Video node for HDMI Rx source can be checked using xmedia-ctl command. Run below xmedia-ctl command to check video node for HDMI Rx source where "mediaX" indicates media node for HDMI input source.
    Code Block
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    $ 

    ...

    xmedia-ctl -p -d /dev/mediaX
    • Make sure HDMI-Rx media pipeline is configured for 4kp60 resolution and source/sink have the same colour format. Run below xmedia-ctl commands to set resolution and format of HDMI scaler node where "mediaX" indicates media node for HDMI input source.

    When HDMI Input Source is NVIDIA SHIELD

    Code Block
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    ...

    $ 

    ...

    xmedia-ctl -d /dev/mediaX 

    ...

    • Set the HDMI source resolution to 4kp60 (Homepage → settings → display & Sound → Resolution → change to 4kp60).
    • Save the configuration to take place the change.

    ...

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

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

    When HDMI Input Source is ABOX

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

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

    Notes to set the format of SCD media node:

    • Run the following command to check the current resolution of SCD nodes(here mediaX is SCD media node),
    Code Block
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    $ xmedia-ctl -p -d /dev/mediaX
    
    • Make sure SCD media node resolution is set as per current pipeline resolution

    Run the following command to change the resolution of SCD nodes(here mediaX is SCD media node and xlnx-scdchan.Y is SCD channel),

    • For 4kp resolution
    Code Block
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    $ xmedia-ctl -d /dev/mediaX -V "\"xlnx-scdchan.Y\":0 [fmt:VYYUYY8_1X24/3840x2160 field:none]"
    • For 1080p resolution
    Code Block
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    $ xmedia-ctl -d /dev/mediaX -V "\"xlnx-scdchan.Y\":0 [fmt:VYYUYY8_1X24/1920x1080 field:none]"


    • 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.
      If HDMI Tx link-up issue is observed after Linux booting, use
      • Run vcu_gst_app for current HDMI resolution (1080p60) by executing the following command
      :
      • .
    Code Block
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    $ modetest -D a0070000.v_mix -s 41:3840x2160-60@BG24
    Run the following gst-launch-1.0 command to display passthrough pipeline. Where "videoX" indicates a video node for the input source
    vcu_gst_app /media/card/config/input.cfg

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

    Code Block
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    $ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! queue ! kmssink bus-id="a0070000.v_mix"
    • Run the following gst-launch-1.0 command to display processed pipeline (capture → scd → encode → decode → display) on HDMI-Tx. Where "videoX" indicates a video node for the input source.
    Code Block
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    $ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! xilinxscd io-mode=5 ! 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 ! queue ! omxh265dec internal-entropy-buffers=5 low-latency=0 ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"
    • Run the following gst-launch-1.0 command to record video using GStreamer pipeline. Where "videoX" indicates a video node for the input source.
    Code Block
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    $ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 num-buffers=3600 ! video/x-raw, format=NV12,width=3840,height=2160,framerate=60/1 ! xilinxscd io-mode=5 ! 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 ! queue ! video/x-h265, profile=main, alignment=au ! mpegtsmux alignment=7 name=mux ! filesink location="/run/media/sda/test.ts"

    NOTE: File location should be SATA SSD(ext4 format) to avoid the read-write bandwidth issue.

    • Run the following gst-launch-1.0 command to play the recorded file on HDMI-Tx using the GStreamer pipeline.
    Code Block
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    $ gst-launch-1.0 uridecodebin uri="file:///run/media/sda/test.ts" ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

    NOTE: File location should be SATA SSD(ext4 format) to avoid the read-write bandwidth issue.

    • Run the following gst-launch-1.0 command for cbr stream-out pipeline. Where "videoX" indicates a video node for the input source.
    Code Block
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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 ! xilinxscd io-mode=5 ! 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, alignment=au ! 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 cbr stream-in on HDMI-Tx video using Gstreamer pipeline where 5004 is port no.

    ...

    themeMidnight

    ...

    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 below steps.
        • Set the HDMI source resolution to 4kp60 (Homepage → 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:
    Code Block
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    $ modetest -D a0070000.v_mix -s 41:3840x2160-60@BG24
    • Run the following gst-launch-1.0 command to display passthrough pipeline. Where "videoX" indicates a video node for the input source.
    Code Block
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    $ gst-launch-1.0 

    ...

    v4l2src 

    ...

    device=/dev/videoX io-mode=4 ! video/x-

    ...

    raw, 

    ...

    width=3840, height=2160, format=NV12, framerate=60/1 ! queue ! kmssink bus-id="a0070000.v_mix"
    • Run the following gst-launch-1.0 command

    ...

    • to display processed pipeline (capture → scd → encode → decode → display) on HDMI-Tx. Where "videoX" indicates a video node for the input source.
    Code Block
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    $ gst-launch-1.0 v4l2src

    ...

     device=/dev/videoX io-mode=4 ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! xilinxscd io-mode=5 ! 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 ! queue ! omxh265dec 

    ...

    internal-

    ...

    entropy-buffers=5 low-latency=0 !

    ...

     queue max-size-bytes=0 ! 

    ...

    kmssink 

    ...

    bus-id="a0070000.v_mix"
    • Run the following gst-launch-1.0 command to

    ...

    • record video using

    ...

    • GStreamer pipeline

    ...

    • . Where "videoX" indicates a video node for the input source.
    Code Block
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    $ gst-launch-1.0 udpsrcv4l2src port=5004 buffer-size=60000000 caps="application/x-rtp, media=video, clock-rate=90000, payload=96, encoding-name=H265" ! rtpjitterbuffer latencydevice=/dev/videoX io-mode=4 num-buffers=3600 ! video/x-raw, format=NV12,width=3840,height=2160,framerate=60/1 ! xilinxscd io-mode=5 ! rtph265depay ! h265parse ! video/x-h265, alignment=nal ! omxh265dec low-latency=1 ! video/x-raw ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false video-sink="kmssink bus-id=a0070000.v_mix plane-id=30" sync=true

    NOTE: The low latency stream-out pipeline is supported with tsmux in vcu_gst_app and low latency stream-in pipeline is not supported in vcu_gst_app.

    Notes for gst-launch-1.0 commands:

    • Video node for HDMI Rx source can be checked using xmedia-ctl command. Run below xmedia-ctl command to check video node for HDMI Rx source where "mediaX" indicates media node for HDMI input source.
    Code Block
    themeMidnight
    $ xmedia-ctl -p -d /dev/mediaX
    • Make sure HDMI-Rx media pipeline is configured for 4kp60 resolution and source/sink have the same colour format. Run below xmedia-ctl commands to set resolution and format of HDMI scaler node where "mediaX" indicates media node for HDMI input source.

    ...

    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 ! queue ! video/x-h265, profile=main, alignment=au ! mpegtsmux alignment=7 name=mux ! filesink location="/run/media/sda/test.ts"

    NOTE: File location should be SATA SSD(ext4 format) to avoid the read-write bandwidth issue.

    • Run the following gst-launch-1.0 command to play the recorded file on HDMI-Tx using the GStreamer pipeline.
    Code Block
    themeMidnight
    $ gst-launch-1.0 uridecodebin uri="file:///run/media/sda/test.ts" ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

    NOTE: File location should be SATA SSD(ext4 format) to avoid the read-write bandwidth issue.

    • Run the following gst-launch-1.0 command for cbr stream-out pipeline. Where "videoX" indicates a video node for the input source.
    Code Block
    themeMidnight
    $ gst-launch-1.0 v4l2src device=/dev/videoX io-mode=4 ! video/x-raw, format=NV12, width=3840, height=2160, framerate=60/1 ! xilinxscd io-mode=5 ! 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, alignment=au ! 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 cbr stream-in on HDMI-Tx video using Gstreamer pipeline where 5004 is port no.
    Code Block
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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=au ! omxh265dec internal-entropy-buffers=5 low-latency=0 ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"
    • Run the following gst-launch-1.0 command for low-latency(LLP1) stream-out pipeline. Where "videoX" indicates a video node for the input source.
    Code Block
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    $ xmedia-ctl -d gst-launch-1.0 v4l2src io-mode=4 device=/dev/mediaX -V "\"a0080000.v_proc_ss\":0  [fmt:RBG888_1X24/3840x2160 field:none]"
    $ xmedia-ctl -d /dev/mediaX -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/3840x2160 field:none]"

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

    When HDMI Input Source is ABOX

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

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

    Notes to set the format of SCD media node:

    • Run the following command to check the current resolution of SCD nodes(here mediaX is SCD media node),
    Code Block
    themeMidnight
    $ xmedia-ctl -p -d /dev/mediaX
    
    • Make sure SCD media node resolution is set as per current pipeline resolution

    Run the following command to change the resolution of SCD nodes(here mediaX is SCD media node and xlnx-scdchan.Y is SCD channel),

    • For 4kp resolution
    Code Block
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    $ xmedia-ctl -d /dev/mediaX -V "\"xlnx-scdchan.Y\":0 [fmt:VYYUYY8_1X24/3840x2160 field:none]"
    • For 1080p resolution
    Code Block
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    $ xmedia-ctl -d /dev/mediaX -V "\"xlnx-scdchan.Y\":0 [fmt:VYYUYY8_1X24/1920x1080 field:none]"videoX ! video/x-raw, width=3840, height=2160, format=NV12, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=low-delay-p gop-length=60 periodicity-idr=60 b-frames=0 target-bitrate=25000 num-slices=8 control-rate=low-latency prefetch-buffer=TRUE low-bandwidth=false filler-data=0 cpb-size=1000 initial-delay=500 ! video/x-h265, alignment=nal ! queue max-size-buffers=0 ! rtph265pay ! udpsink host=192.168.25.89 port=5004 buffer-size=60000000 max-bitrate=120000000 max-lateness=-1 qos-dscp=60 async=false

    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 low-latency(LLP1) stream-in on HDMI-Tx video using Gstreamer pipeline where 5004 is port no.
    Code Block
    themeMidnight
    $ gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, media=video, clock-rate=90000, payload=96, encoding-name=H265" ! rtpjitterbuffer latency=5 ! rtph265depay ! h265parse ! video/x-h265, alignment=nal ! omxh265dec low-latency=1 ! video/x-raw ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false video-sink="kmssink bus-id=a0070000.v_mix plane-id=30" sync=true

    NOTE: The low latency stream-out pipeline is supported with tsmux in vcu_gst_app and low latency stream-in pipeline is not supported in vcu_gst_app.