appsink can't get qtmux streamheader

[nzhang3]

Hi

     I'm a gstreamer developer from China. Now I know qtmux and mp4mux 
can write streamheader in the end of the file. I can play the such file 
by using filesink. However, I can't manage to play the such file via 
appsink, although I sent the EOS to the pipeline.

Could someone help me about the issue.

Thanks so much.

Cloud Zhang