> Having tested this further I realised that the H264VideoStreamFramer assumes 
> a constant 25fps.

Not exactly.  The code assumes a frame rate of 25 fps *only if* there is no 
timing information in the SPS NAL units.

If you want your video to be streamed at the correct frame rate, you should 
make sure that the SPS NAL unit contains “vui_parameters”, which in turn has 
the “timing_info_present_flag” set, with the “time_scale” and 
“num_units_in_tick” fields set.  In other words, you’ll need to reconfigure 
your encoder to give you this information (if it doesn’t do so already).


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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