<html><head></head><body><div class="ydp5ebcd64dyahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div dir="ltr" data-setdir="false">I want to change the pipeline (while it is in the playing state) when a source element produces a buffer, then I want to make sure that the buffer reached the sink elements, and then I want to change the pipeline again, but this time as soon as possible (but so that no data is lost).</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">How can this be accomplished?<br></div></div></body></html>