Sony Vegas x264wfv output changes red color

[LeoKac]

Hello, I have Sony Vegas Pro 13 x64, and I am trying to render a video.

When I render normally, with Sony AVC codec or MainConcept AVC, the output colors are just the same as input video.

But I want to x264wfv plugin to render the video into x264 (lossless or maybe CRF), I like x264wfv more, because I can focuse on quality than bitrate. Sony AVC and MainConcept AVC are actually headache in terms of outputing maximum quality with not huge size.

So, well, I rendered the video with x264vfw, here is the image of rendering settings:



and here is the ouput:



As you can see, the output video colors are almost identical, but only red colors are lighter than original video. I don't understand, what's wrong with x264wfv? Why it does not just make everything the same? why it changed red colors?

Well, I just want totaly same output in terms of color. Is there any other x264 encoder for Sony Vegas?

[LigH.de]

Most YUV codecs will limit the luminance and chrominance ranges to the limits based on TV broadcast standards (ITU-R BT.601/709). You may need to either be able to activate a "full range" encoding to avoid that (AVCHD cameras may call that "x.v.Colour"), or avoid rendering colors beyond these limits.

By the way, x264 is like a trademark. If you are looking for another encoder, it won't be x264 anymore. The standard is called H.264 or MPEG-4 AVC. But a different H.264 encoder won't solve your problem

[LeoKac]

Hey guys, I have fixed this problem.

After soooooooo much Googling and testing and Googling and testing and testing, here is what I did finally:



At first, I'll say that this is the information of the source file:

Downloaded from: Youtube
Resolution: 3200x1800 (almost 4K)
Framerate: 30fps
Bit depth: 8 bits
Color space: YUV
Duration: 3 hours and 41 minutes
Size: 19 GB

And, well, the Project Properties in Sony Vegas:

Pixel format: 32-bit floating point (video levels)

--> NOTE: the colors in Sony Vegas Preview window was absolutely the same as source colors. I mean, there was no problem about studio RGB vs Computer RGB.


And, this is what I did:

I just typed this text in the command line tool in x264wfv window:

--range pc --colormatrix bt709

That's it. It just rendered fine. Absolutely the same color output as source.