Q&A: How is VPU Latency on i.MX6

[#1]

Q: What is latency figures for the VPU to decode

Device: i.MX6Q

OS: Linux
Resolution:                         1920x1080(HD)

Frame rate:                        30 FPS

Function:                             Overlay messages.

Input/Output:                   8 bit / YUV 4:2:0 / NAL stream

Profile level:                      4.1. Constrained Baseline. I and P frames support.

A:

It depend on the syntax in H.264, includes num_reorder_frames,max_dec_frame_buffering,num_ref_frames,MaxDpbSize,etc. for start latency: it cover vpu driver loading, allocate buffers, init, decoding the first frame less than 100ms on iMX6/Linux.

This document was generated from the following discussion: VPU Latency i.MX6