[FFmpeg-user] Windows 10, ffmpeg concat/demux is slow... part 2

Rob Hallam ffmpeg at roberthallam.com
Sun Nov 12 10:25:40 EET 2017

On 12 November 2017 at 06:37, Gyan Doshi wrote:
> 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.

This is good advice. I think Task Manager in Windows 10 has
a 'performance' display, which should show disk IO (?) which may
be of help. Compare IO speed to SSD with a file copy, ffmpeg, DaVinci
Resolve etc.


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