Hi HB,
[quote user="hb chen"]
1) we changed maxPicSizeRatioI=640 to maxPicSizeRatioI=30.
if it set maxPicSizeRatioI=640, error IH264ENC_EXTERROR_RATECTRL_IFRAMEPICSIZE is occurred. Why?
[/quote]
The error could possibly be because of the wrong setting of maxPicSizeRatioI with respect to intraFrameInterval.
Unlike REL.500.V.H264AVC.E.IVAHD.02.00.04.01, in case of REL.
500.V.H264AVC.E.IVAHD.02.00.08.00 the upper limit of maxPicSizeRatioI is restricted to (intraFrameInterval << 5).
Please refer the description of maxPicSizeRatioI in section 4.2.2.2 IH264ENC_RateControlParams of the User Guide for more details.
Best Regards,
Nandu.