Why DecodeFrameAsync keeps return MFX_WRN_VIDEO_PARAM_CHANGED?

Why DecodeFrameAsync keeps return MFX_WRN_VIDEO_PARAM_CHANGED?

jiuxiang's picture
jiuxiang
Fri, 03/09/2012 - 11:08

I have an IP camera which encodes in H264 with resolution: 1080p at 15 fps rate. In client end, I useDecodeFrameAsync() to decode the stream. ButDecodeFrameAsync keeps return the warningMFX_WRN_VIDEO_PARAM_CHANGED which means "the video parameters are changed during decoding". However, I didnot change camera setup during it plays. What are the video parameters? Thanks in advance. Jiuxiang

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Petter Larsson (Intel)'s picture
Petter Larsson (Intel)
Fri, 03/09/2012 - 12:23

Hi Juixiang,

DecodeFrameAsync returnsMFX_WRN_VIDEO_PARAM_CHANGED whenever a sequence header is found in bit stream. This is the expected behavior and is also noted in the Media SDK manual pages forDecodeFrameAsync. I assume this is just how your camera creates the stream.

Regards, Petter

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