2. 技术支持
  3. AR# 7199:
  4. AR# 71993: 2018.3 Zynq UltraScale+ MPSoC VCU - Why do I see a bitrate of 1.55 Mbps when using CBR Rate Control Mode with a Target Bit Rate of 1 Mbps, and a GOP Length of 12?

AR# 71993

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2018.3 Zynq UltraScale+ MPSoC VCU - Why do I see a bitrate of 1.55 Mbps when using CBR Rate Control Mode with a Target Bit Rate of 1 Mbps, and a GOP Length of 12?

描述

Why do I see a bitrate of 1.55Mbps when using CBR Rate Control Mode with a Target Bit Rate of 1 Mbps, and a GOP Length of 12?

For example, control-rate=2, target-bitrate=1000 and gop-length=12.

解决方案

This is a known issue with the Zynq UltraScale+ MPSoC - LogiCORE H.264/H.265 Video Codec Unit (VCU) when using CBR Rate Control Mode with a Target Bit Rate of 1 Mbps, and a GOP Length of 12.

See the following solutions for each PetaLinux version:

  • 2018.2 - Users can download the PetaLinux Recipes and Patch files from (Xilinx Answer 71798) to work around this issue.
  • 2018.3 - Users can download the PetaLinux Recipes and Patch files from (Xilinx Answer 71798) to work around this issue.
  • 2019.1 - These patches are included in the 2019.1 release and later versions.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
71653 PetaLinux 2018.3 - Product Update Release Notes and Known Issues N/A N/A
66763 LogiCORE H.264/H.265 Video Codec Unit (VCU) - Release Notes and Known Issues for the Vivado 2017.3 tool and later versions N/A N/A
71798 2018.3 - Zynq UltraScale+ MPSoC VCU - Patches for 2018.3 LogiCORE H.264/H.265 Video Codec Unit (VCU) - Linux Kernel Module, VCU Control Software, GStreamer and OMX N/A N/A
AR# 71993
日期 02/06/2019
状态 Active
Type 综合文章
器件
Tools
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