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VPU decoder would cache several frames before display the first beginning frame?

Question asked by li kame on Jun 29, 2018
Latest reply on Jun 30, 2018 by li kame

When I tried to decode real time H264 stream over VPU decoder, I received following log:

[INFO]  Display fps will be 30

[INFO]  vpu needs more bitstream in rollback mode frame_id = 0

[INFO]  Num of Error Mbs : 4656, in Frame : 0  

VPU doesn't have picture to be displayed.toutinfo.indexFrameDisplay = -3, -1

[INFO]  Num of Error Mbs : 4656, in Frame : 0  

VPU doesn't have picture to be displayed.toutinfo.indexFrameDisplay = -3, -3

VPU doesn't have picture to be displayed.toutinfo.indexFrameDisplay = -3, -3

VPU doesn't have picture to be displayed.toutinfo.indexFrameDisplay = -3, -3      

 

It seems that VPU decoder will cache several frames before display the first beginning frame. Why? And how can I do to display the frame in real time without any delay? Thanks a lot.

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