[FFmpeg-user] Fwd: [screen-capture-recorder-to-video-windows-free] Color mismatch on recorded file (#29)

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Jun 25 09:52:38 CEST 2014

Roger Pack <rogerdpack2 <at> gmail.com> writes:

> Shouldn't conversion to yuv444p (or at least
> yuvj444p) be "lossless" or am I missing something?

It is generally not lossless (I believe with j2k, there 
may be an exception but it is not relevant here).

> With -qp 0 it should be "near lossless" shouldn't it?

What does "near lossless" mean?
-qp 0 means lossless encoding, if it is not lossless 
this would be a (serious) but that has to be reported 
here if it is a decoding bug and to x264 if it is an 
encoding bug.


The reason I originally didn't answer was this sentence:

> libx264rgb can be lossless and does work.

This is expected and it seemed to me as if you had 
already solved the problem, so I didn't know what to reply.

Carl Eugen

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