On Fri, 29 May 2015 05:10:41 +0000 Jasleen Kaur <[email protected]> wrote:
> > > ________________________________________ > From: [email protected] [[email protected]] on behalf > of wm4 [[email protected]] > Sent: Wednesday, May 27, 2015 6:30 PM > To: [email protected] > Subject: Re: [Libav-user] Colour space conversion > > On Wed, 27 May 2015 09:42:11 -0300 > Rafael Lúcio <[email protected]> wrote: > > > If you convert any RGB format to YUV420 you will lose data. If you want to > > just change the format to YCbCr without losing data.. you can try YUV444 > > format... its 3 bytes per pixel, just like RGB, so you will not lose any > > data. > > > > That's quite misleading. yuv420 will of course lose data, but it's also > the standard for video compression (which typically _also_ loses data > additional to the yuv conversion). And converting between yuv444 and > RGB is also a lossy operation (at least if both use the same bit depth). > > > > > What I mean by colours change is for example ...that orange becomes blue, > blue becomes green, gray remains gray. > Really confused over the solution , Do I used yuv444 instead to solve this ? No. If this happens, there is a major bug. Maybe switched U/V planes. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
