Error in conv

After I updated to R28.4, conv reports some errors?

libv4l2_nvvidconv (0):(1670) (ERROR) : NvDdkVicConfigure Failed
libv4l2_nvvidconv (0):(1692) (ERROR) : NVVIDCONV ERROR 2

What is the reason? In R28.2, It’s OK!

And more info:
In R28.2,

TVMR: cbBeginSequence:1683 ColorSpace = NvColorSpace_YCbCr601

But In R28.4
TVMR: cbBeginSequence:1674 ColorSpace = NvColorSpace_YCbCr709_ER

Why the colorspace is changed?

Hi,
In later release(s), we separate YUV420 in different color spaces(bt601, bt709, bt2020). Please call NvBufferTransform() instead of using NvVideoConverter.

Thank You!The error is fixed