Settings to transcode to x264 Lossless video?

[eslake]

I've searched, and previous questions about this never actually found an answer.

What I have..
A large number of Uncompressed UYVY 422 8bit (the only option for output without degradation in the Premiere cs5)
What I need..
the Same videos compressed as much as they can be with x264 without losing a single pixel.

I tried to compress them using x264 itself, but it only deals with MKV ...
So I shelled out for MediaCoder because it is Supposed to simplify things..

Only to find that it is essentially the same thing..

Can someone, simply tell me, what argument I need to use to compress Visually Lossless files using x264 - IN MediaCoder?

[meRobs]

I am not sure what some of your statements mean.
For example, lossless means no compression and x264 video can easily be placed in MP4, not just MKV.
Some of the Guides listed under Tips & Guides (below) discuss x264 and MP4, etc.

Also, if you keep the same resolution ("Resize"), such as 720x576, then you won't lose a single pixel.
This is so because the resolution expresses the dimensions of each video frame in pixels, eg, a resolution of 720x576 will give frames that are 720 pixels wide by 576 pixels high.

[flagpole]

i think what you might be referring to is rate mode 'constant QP' with the quantizer set to zero.

you're nomenclature is a bit confusing.

[DIV]

For example, lossless means no compression and x264 video can easily be placed in MP4, not just MKV.

Actually "lossless" does not say anything about whether compression has been done or not.

Think about this concept:
Original data*: {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0}
Lossless compression: {10 × 0, 9 × 1, 0}
Lossy compression: {10 × 0, 10 × 1}

* Lossless and uncompressed by definition

Depending upon the circumstances huge compressions can be obtained with lossless compression algorithms. Think about making a ZIP file from a text (*.TXT) document.

Given the original question wasn't properly answered, I'd still like to know the answer.

—DIV

[flagpole]

You're asking for support on X264 rather than mediacoder.

anyway to the best of my knowledge x264 is lossless when the quatizer is set to zero. as in --qp 0

you do this in the GUI set the rate mode to constant QP and quantizer to 0, crf 0 is the same.

you might want to disable the psychovisual optimisations on the advanced button too because this changes the quantizer between the chroma and the luma.