Pipeline freeze when audio source is ended

[stic at free.fr]

Hello everyone,

I have a simple pipeline running with an audio source and video source, muxed together into a tcpserversink.
The problem I have is that the pipeline freeze once the audio source is ended, but I would like it to continue even is there is no audio anymore in the pipeline.
What should I do in such case ?
I tried to drop the EOS signal arriving on the src pad of the audio source bin but it doesn't seem to change anything.
Could someone describe what should be done in such case ?
That would really help me, thank you very much in advance !