[FFmpeg-devel] Post-processing filter Documentation

arwa arif arwaarif1994 at gmail.com
Sat Jan 31 10:00:29 CET 2015

On Thu, Jan 29, 2015 at 5:18 PM, Stefano Sabatini <stefasab at gmail.com>

> On date Thursday 2015-01-29 03:46:42 +0530, Arwa Arif encoded:
> > I have updated the page with new images.
> > http://trac.ffmpeg.org/wiki/Postprocessing
> Note: probably you can improve the page layout by stripping the black
> top and bottom bands in the matrix reference.
> How do you exactly created the query image? Also please specify the
> information unit (200K = 200 Kbit/s, right?)
I used this command to create the query image:
ffmpeg -i matrixbench_mpeg2.mpg -b:v 200k matrixbench_mpeg2-lq.mpg

> > What exactly needs to be done in benchmark section?
> I already suggested a command (please keep some context when
> replying), but Michael observed that the actual benchmark could be
> affected by I/O speed.
> I wonder if there is a better way to benchmark the performance of a
> single filter. Using START/STOP_TIMER can be an idea but it would be
> probably a little awkward.

So, which method should I follow to get the runtime?

> --
> FFmpeg = Forgiving and Forgiving Murdering Picky Excellent Gorilla
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