Table of Contents

1 Overview

The primary goal of this Design is to demonstrate the capabilities of VCU hard block present in Zynq UltraScale+ EV devices. The TRD will serve as a platform to tune the performance parameters of VCU and arrive at optimal configurations for encoder and decoder blocks with the streaming use case where bandwidth plays a vital role. 

This design supports the following video interfaces:

Sources:

• File source (SD card, USB storage, SATA hard disk).
• Stream-In from network or internet.

Sinks:

• HDMI-Tx display pipeline implemented in the PL.

VCU Codec:

• Video Encode/Decode capability using VCU hard block in PL 
  • AVC/HEVC encoding.
  • Encoder/decoder parameter configuration.

Streaming Interfaces:

• 1G Ethernet on PS 

Video format:

• NV12

10G Deliverables:

Supported Features:

The table below provides the supported encoder feature in this release.

√ - Supported
NA – Not applicable
x – Not supported

The below figure shows the HDMI Video Display design hardware block diagram.

The below figure shows the HDMI Video Display design software block diagram.

1.1 Board Setup

Refer below link for Board Setup

• Zynq UltraScale+ MPSoC VCU TRD 2019.2 Board Setup

4 Appendix B

• If HDMI Tx link-up issue is observed after Linux booting, use the following command:

$ modetest -D a0070000.v_mix -s 40:3840x2160-60@AR24 -w 35:"alpha":0

• Run the following gst-launch-1.0 command for file playback using the GStreamer pipeline.

$ gst-launch-1.0 uridecodebin uri="file:///run/media/sda/test.ts" ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

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

• Run the following gst-launch-1.0 command to display CBR stream-in on HDMI-Tx video using the Gstreamer pipeline where 5004 is port no.

$ 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 to display low-latency(LLP1) stream-in on HDMI-Tx video using the Gstreamer pipeline where 5004 is port no.

$ 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 queuelatency=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-in pipeline is not supported in vcu_gst_app.