2. Alveo Accelerator Card Applications
  3. V-Nova LCEVC XDE/XSA

V-Nova LCEVC XDE/XSA

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Application Summary

V-Nova LCEVC XDE/XSA is the industry’s first highly optimized software library for encoding and decoding enhanced video streams with MPEG-5 Part 2, low-complexity enhancement video coding.
 

Vendor Modified Size Container Version
V-Nova January 23, 2020 942 MB pplus_u200_v1.0

Deployment Options

This application is containerized and can be easily run in a few minutes in the cloud, or on-premises.

Cloud Services
Nimbix
  • Xilinx Runtime: Coming Soon
  • Target Platform: Coming soon
On Premises
Alveo U200
  • Xilinx Runtime: 2019.1
  • Target Platform: xdma-201830.2

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Begin your free trial and run the code sample below.

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Follow the instructions based on your deployment method.

Have Questions or Feedback on this Application?
Alveo U200

1.

Host Setup

The Xilinx Runtime (XRT) host application is supported on Ubuntu 16.04 /18.04 and CentOS 7.x.  With sudo access, use the following command to download and run the setup script:

1.1 Clone GitHub Repository for Xilinx Base Runtime

    git clone https://github.com/Xilinx/Xilinx_Base_Runtime.git && cd Xilinx_Base_Runtime

1.2 Run the Host Setup Script

    ./host_setup.sh -v 2019.1 -p alveo-u200

Note:

  • Please wait for the installation to complete.  During this time you may need press [Y] to continue the host setup.
  • If you choose to flash the FPGA, you will need to cold reboot the local machine after the installation is completed to load the new image on the FPGA.
  • The script for host setup can be used to setup other versions XRT and shell. Please check https://github.com/Xilinx/Xilinx_Base_Runtime for more details.

Install Docker (If not installed yet)

With sudo access, use the following command to run the utility script to install docker.

1.3 Go to Xilinx_Base_Runtime utilities directory

    cd Xilinx_Base_Runtime/utilities

1.4 Run the Docker installation script 

    ./docker_install.sh

2.

Application Execution

Enter the following commands in a terminal window to run the application:

2.1 Setup Environment Variables by script from Xilinx_Base_Runtime

    source Xilinx_Base_Runtime/utilities/xilinx_docker_setup.sh

2.2 Pull the Docker Image

    docker pull hubxilinx/vnova_pplus_alveo_u200:ppxde-demo

2.3 Run the Docker Image

    docker run -v /tmp/cred.json:/vnova_pplus/cred.json:Z -v /dev/shm:/io:Z $XILINX_DOCKER_DEVICES hubxilinx/vnova_pplus_alveo_u200:ppxde-demo -y -s 3840x2160 -pix_fmt yuv420p -vcodec rawvideo -stream_loop 3 -r 60 -i /samples/sample_3840x2160_8bit_P420.yuv -c:v pplusenc_hevc -base_encoder ngcodec_sdx_hevc -eil_params "accel_type=xilinx_xma;encoding_transform_type=dd;temporal_enabled=0;temporal_use_refresh=0;api_mode=asynchronous;baseEncType=ngcodec;xclbinHasNGC=1;encoding_downsample_luma=area;encoding_upsample=cubic;rate_control_mode=variableratio;rc_bucket_duration_ms=2000;encoding_step_width_model=v1;encoding_step_width_min_qp=41;bitrate_max_base_prop=0.8;bitrate_base_prop=0.8;perseus_mode=robust;qp_min=30;xma_config=/vnova_pplus/SystemCfg_194.yaml" -b:v 8000k "/io/output.ts"

Description of command arguments:

  • -v /tmp/cred.json:/vnova_pplus/cred.json:Z - Map local cred.json dir : container dir
  • -v /dev/shm:/io:Z - Map the local dir : container dir for input &  output file
  • $XILINX_DOCKER_DEVICES - Environment variable set by the host setup script
  • -y  - Overwrite output files without asking
  • -s WxH - Resolution of input
  • -pix_fmt - Pixel format of input file (yuv420p)
  • -c:v codec - Codec used for encoding (For this demo, pplusenc_hevc, which specifies LCEVC with a HEVC base codec)
  • -base_encoder codec  - Code used for the base (ngcodec_sdx_hevc specifies the HEVC encoder from Xilinx-NGCodec running on the FPGA)
  • -stream_loop - Specifies the number of times to loop over the input file during encodes, set to -1 for infinite
  • -i  -  Location of input file to be encoded
  • -b:v  - Specifies the encoding bit rate, e.g 4500k will encode at 4.5mbps

 

3.

Results

Once your job is complete, an “output.ts” 4K HEVC encoded sample will be available in "/dev/shm". You can use The Perseus decoder on Microsoft Windows 10 to display it.  You will need to install these 2 apps:

  • HEVC extension app: 

https://www.microsoft.com/en-us/store/p/hevc-video-extension/9n4wgh0z6vhq

  • V-Nova Perseus Decoder: 

https://vnovaltd.sharepoint.com/:f:/s/CustomerSuccess/CSMPublic/EgV4kmFWu7VOjltA7Eg-iPQBx4jOEyZ_Dl9IGXf6aCWf6Q?e=Tv7tpE

Password: Vnova@UWP

You can now use your own input video file by:

  • Copying your file in "/dev/shm/{YourFileName}"
  • Replacing "-i /samples/sample_3840x2160_8bit_P420.yuv" with "-i /data/{YourFileName}" in the docker run command
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