SIMATIC WinCC Open Architecture Forum

Hi,

I use Windows 7, 64 bit and WinCC OA version 3.14 (Qt 5.5.0) with video services running on a single host.
For an ONVIF and an Axis M5014 camera, although the video gets displayed correctly, it shows the following warnings on opening the camera's H.264 stream:

WCCOAui1:WCCOAui (1), 2016.06.08 13:51:02.066, Qt, H264Decoder::H264Decoder: using libavcodec decoder
WCCOAui1:WCCOAui (1), 2016.06.08 13:51:02.678, Qt, receiving rtp live stream (unicast rtp port 62915-62916); resolution: width = 1280, height = 720
WCCOAui1:[h264 @ 000000000A206400] decoding for stream 0 failed
WCCOAui1:[h264 @ 000000000A1531E0] non-existing PPS 0 referenced
WCCOAui1:[h264 @ 000000000A1531E0] Cannot parallelize slice decoding with deblocking filter type 1, decoding such frames in sequential order
WCCOAui1:To parallelize slice decoding you need video encoded with disable_deblocking_filter_idc set to 2 (deblock only edges that do not cross slices).
WCCOAui1:Setting the flags2 libavcodec option to +fast (-flags2 +fast) will disable deblocking across slices and enable parallel slice decoding but will generate non-standard-compliant output.
WCCOAui1:[h264 @ 000000000A1531E0] non-existing PPS 0 referenced

The last line above repeats as long as the video stream is open.
Please help as how to avoid getting these warnings.

Regards,
Sajid

Hi,

these warnings are generated by the video widget.
Currently it is not possible to avoid getting these warnings.
But they will be removed in the next version of WinCC OA.

Regards,
Martin

Hi Martin,

Thanks for the clarification.

Regards,
Sajid