mpegtsmux at high bitrates

[cfadeley]

Has anyone else experience issues with the mpegtsmux plugin at high bitrates? 
Seems like any point higher than 3mb/s causes frames to be dropped by the ts
muxer.  

I am streaming out to rtp using gst-rtsp-server.

When compressing an image to a bitrate of 5mb/s I can do the following:
encoder --> rtph264pay --> server
and I will have the expected framerate produced all the way through the
pipeline (30fps).

But if I add a ts to the system:
encoder -->mpegtsmux -->rtpmp2tpay -->server
I get a much lower framerate of around 20fps.  

Again this only happens at higher bitrates and I can confirm it is not the
encoder since I can watch the framerate out of the encoder.  This results in
the issue either at the mpegtsmux or the rtp payloder.  And I doubt it is
the later since it is so simple.

I can also see that at higher bitrates the mpegtsmux plugin has a much
higher CPU usage.  And i would not be surprised if this causes the drops in
frames due to the mpegtsmux failing to keep up.

I am just curious if anyone else is aware of this issue and/or if it is only
on my side of things.



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