Good afternoon, It took me the better part of two full working days, but I discovered the solution. I would like to post the answer in case somebody else gets stuck with it. I am pulling data from an IP camera, then subclassing MediaSink class to decode the data from the camera, then passing the data to a dialog which displays the output and plays the sound chunks. When I try to play both video and audio, then the video stream gets stuck, I can play the individual streams perfectly. After meticulously making incremental changes to discover the issue, I found that when playing audio using the PortAudio library, it is required to call the PA_WriteStream(...) function within a separate thread. The only reason the video was getting stuck is due to some side-effect (unknown) of the way PortAudio writes to the default sound device which is not compatible with the way in which I am using live555. To allow for a bit more clarity, I am using live555 to stream rtsp data, ffmpeg to decode/transcode the streamed data, Direct3D to display video, and PortAudio to play sound. With this toolchain it is essential to play the audio in a seperate thread, else the video sink will lock up. Thank you for all your assistance. Regards ____________________________
Shaheed Abdol Web: www.scansoft.co.za <http://www.scansoft.co.za/> Tel: +27 21 913 8664 Cell: +27 79 835 8771
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