[libav-tools] Capturing and showing desktop with avconv/avplay.

Mario Mey mariomey at gmail.com
Fri Nov 20 18:54:01 CET 2015

> Which version of libav are you using?
$ avconv
  avconv version 9.18-6:9.18-0ubuntu0.14.04.1, Copyright (c) 2000-2014 
the Libav developers
   built on Mar 16 2015 13:19:10 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)

> how much cpu blenderplayer is taking?
Yes, BlenderPlayer is a Game Engine. It takes 40% or more... but it's 
irrelevant to the main problem. It starts at 30fps and then it starts 
getting lower and lower and get freeze... till clicking the window. Even 
avconv/avplay window is in focus. Even without BlenderPlayer running!
> You might get better results by switching to x264 in ultrafast mode.
I tried to use x264, but it starts after 5 seconds, more or less... and, 
when it gets freeze and I click the window, there're a lot of artifacts. 
No matter if it has or don't have ultrafast preset.

I tried mjpeg, mpeg4, libx264, rawvideo... they all do the same. Maybe 
something in avplay?

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