Hi, dear masters
On top of the AMF sample pipelinePlayback in media sdk 1.1, I wrote some code to decode the realtime h.264 stream from another video server. Instead of AMFDataStreamFile, which is created during initialization of playback pipeline, I provided my own 'live source' data stream and inside it, I directed reading from file to live source from network. According to my understanding to pipeline working mechanism, at the beginning of job, I blocked the on-demand reading for PPS/SPS, requested by the pipeline and until the SPS/PPS is got, the reading call is freed to return back. After that, with synchronization skills, I ensured each reading,afterwards, could retrieve the data from my network buffer,which is holding continuous feed h.264 data. That's basically the outline of my implementation.
Now, I managed to playback the stream from IP camera successfully, but 2 problems are remarkable,
a. The latency is big, about 2 or 3 seconds. For example, I suddenly move my hand in front of camera, only after 2 or 3 seconds, I could see this motion in my playback window. I do not see such a big latency with 3rd party tool, like onvif manager.
b. The decoded picture's quaility is bad when motion is relatively far. I could see obvious blur blocks surrounding moving objects. When stopped for a whiles, the blur could dissappear.
And I think, the worst poblem is that I could not get the real-time h.264 stream from video server,( mentioned above ), to be decoded. Always, the command line window shows the following errors,
2015-05-31 10:32:23.859 534 [h264parser_util] Error: ..\..\..\..\..\impl\components\VideoStreamParser\parsers\h264\h264_util.cpp(91):Assertion failed:false
2015-05-31 10:32:23.877 534 [H264Parser] Error: ..\..\..\..\..\impl\components\VideoStreamParser\parsers\h264\H264Parser.cpp(2947):GetDPBSize() undefined level_idc=0
Something is wrong? But I am sure that SPS/PPS has been obtained by pipeline, by debugging.
Could anyone do me a favor to analyze the reason?