How to improve VCU decode Capability?

[gefei-liuqi]

Hello, I have a mxf file while the video is h264-encoded.

The video is 505Mb/s, 3840x2160, 50fps AVC(High 4:2:2 Intra@L5.2).

I use gstreamer to decode: gst-launch-1.0 filesrc location=4K_demo.mxf ! mxfdemux ! h264parse ! omxh264dec internal-entropy-buffers=10 ! videoconvert ! kmssink bus-id="a0070000.v_mix"

It lost many frames.

Can the VCU  decode those high bitrate? How to improve the VCU decode capability?

My board is ZCU106, with MPSoC-VCU-TRD-2019.2. Thanks!

[watari · Accepted solution]

Hi @gefei-liuqi 

You should set proper QoS parameters and add prefetch_buffer=treu on your gstreamer pipeline.

Refer the followings if you want to know details.

https://www.xilinx.com/support/documentation/ip_documentation/vcu/v1_2/pg252-vcu.pdf#page=160

https://www.xilinx.com/support/documentation/ip_documentation/vcu/v1_2/pg252-vcu.pdf#page=170

Best regards,