Are you using the WinCairo port, which uses MediaFoundation for video, or the 
AppleWin port, which uses AVFoundation for video?  Linux uses GStreamer for 
video.  These are all completely different implementations of video players.  
It is quite possible there is a bug in one of them that needs to be fixed.

Is there one pixel whose value that is different, or many pixels that are 1 
unit different?  That particular test seems to have a tolerance of 2.
I think the colorspace management should be the same on all ports, but I’m not 
sure.

> On Jan 2, 2016, at 9:20 PM, ankit srivastav <[email protected]> wrote:
> 
> Hi All,
> 
> Working on a webkit DRT test case media/video-canvas-drawing-output.html .
> Test is getting failed on Win environment with only 1 pixel value difference.
> But is working fine on linux.
> Is this test should be added in the skipped list for windows ?
> Is their is some difference in clourspace management on win and Linux 
> environment ?
> 
> TIA.
> Ankit
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