On 11/12/2017 11:11 AM, Kevin Duffey wrote:

If other posts I found indicated that this was a normal speed I might accept 
it... however, I see many posts indicating they get 100, 200 or more fps when 
concat/demux is being used where I am getting about 5fps to 10fps.

Rather than fps, check the bitrate obtained i.e. bytes written out per second, and compare that with a OS copy of the same input to the same destination.

Gyan
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