Black Levels Off in the Encodes

[MisterXDTV]

I fixed the blacks, correcting the Video Levels to 0-255 (with an avisynth script)

Direct download link (1080p)

https://drive.google.com/uc?export=d...lNybXVSMFNvSzQ

YouTube encode:

[sparktank]

I fixed the blacks, correcting the Video Levels to 0-255 (with an avisynth script)

But MediaInfo shows "Color range: Limited", which brings down to 16-235/240 range.
Even MadVR as a video renderer reports limited range.

What is the avisynth script (complete) ?

Playing back the WB encode (MOV) didn't have any problems.
But this fix seems darker because it was converted to full range then back down to limited range (thus limiting it further).

[jacques1400]

I fixed the blacks, correcting the Video Levels to 0-255 (with an avisynth script)

The original trailers look fine to me, maybe I'm not as picky, I don't have an answer.
Let's keep in mind that no displays are alike, not even taking into consideration individual personal settings.
To state that an encode is too light or too dark, is a pretty bold statement, and maybe that's the way it was meant to be.

[MisterXDTV]

The original trailers look fine to me, maybe I'm not as picky, I don't have an answer.
Let's keep in mind that no displays are alike, not even taking into consideration individual personal settings.
To state that an encode is too light or too dark, is a pretty bold statement, and maybe that's the way it was meant to be.

Bold statement?


Original encode



My encode:



Even the black bars at the top and bottom are grey!

[MisterXDTV]

But MediaInfo shows "Color range: Limited", which brings down to 16-235/240 range.
Even MadVR as a video renderer reports limited range.

What is the avisynth script (complete) ?

Playing back the WB encode (MOV) didn't have any problems.
But this fix seems darker because it was converted to full range then back down to limited range (thus limiting it further).

In the original encode even the black bars at top and bottom are grey (just watch the Warner and DC Logos at the beginning)....
What Mediainfo says is not what you actually see...

It was a bad encode by Warner. To fix it I had to convert TV levels to PC Levels. Normally it shouldn't be done because it would cause black crush, but in this case it's necessary....

[jacques1400]

Both screen caps that were posted are basically identical to me, the only difference is a slight crispness in your copy, but I really had to stare at it to see it.
If I have to look that hard on a side by side comparison, it's pretty minimal, at least on my screen.
Regardless, this is getting off topic, but thanks for the help.

[MisterXDTV]

Both screen caps that were posted are basically identical to me, the only difference is a slight crispness in your copy, but I really had to stare at it to see it.
If I have to look that hard on a side by side comparison, it's pretty minimal, at least on my screen.
Regardless, this is getting off topic, but thanks for the help.

Your screen shouldn't make any difference: if you see the first one as pure black there's something wrong in your monitor settings.. It is grey in the source file itself (the video levels are wrong)

Anyway I hope my encode is helpful for someone, didn't mean to go off topic....

[Lutz_1983]

what is the FYI and where can contact they to say Stop this big kistake we want black not grey. please answer me Antovolk.

i have seen/look all footage from Cominc Con is in bad grey and not in perfect black. here the same by 3 third Trailer for Fatasitc Four by Foxmovie:



Which person can we fire how make this big **** and destroy the Qualitiy of pictures by all Trailers?

[MisterXDTV]

FYI the official ProRes encodes seems to have fixed the black level issue


http://www.movie-list.com/forum/show...191#post235191

PS: They still all look the same to me.

YES, the ProRes version has the correct video levels, just like my encode!

[jacques1400]

FYI the official ProRes encodes seems to have fixed the black level issue

If that's the case, then the problem is NOT with the encode itself.
The ProRes (DVC100) raw file provided by the studio via Electronic Press Kits (EPK's) is the source of all encodes, and is pretty hefty weight wise, usually between 1.5Gb and 3Gb. for a trailer.
I don't know about the studios, but I do not perform any corrections during the conversion process, apart from scaling them down to 1080p & 720p and extracting all but the AAC audio from the Standard 8 tracks included.

Moving on, Man from U.N.C.L.E. will probably be next, downloading it now, and the placeholder for Suicide Squad is listed, but empty, so this usually means that they are in the process of posting it.

[jacques1400]

OK,

Now we have complaints about other studios with "Grey" encodes, which I personally fail to see.
I'm no expert or encoder, but reason stands that the problem is not with the encodes if all of a sudden all trailers from different studios are "Grey".

I'm running Firefox Beta 40, with the latest patch and the latest version of VLC as a player set to default.
My monitor is set to default as well, running on an Intel HD Graphics Card, which is configured to the matched monitor configuration and driver.

Having said this, I'm no way saying that there is no problem, but I personally do not see a difference between any of the encodes whatsoever. either they be YouTube, Official or ProRes. Now I'm really Confused......

[sparktank]

Looking at the PNG's, the original is "brighter", which probably produces grey-looking colors (being black and all... when black gets brighter in the spectrum it moves up the line).

Youtube has a lot of issues with anything.
They won't release full spec for uploaders, so it's hard to tell what they do with fullrange/tvrange and even how they deal with Rec709/Rec601 (what dimensions they consider for Rec709; which a lot of software developers designate differently).

I try my best to avoid youtube trailers as much as possible.

If using x264 to encode,

--range pc --input-range pc

need to be enabled if the source is fullrange (0-255).

[sparktank]

I grabbed all 3 trailers:

BvS_Trailer2_AppleQT (Apple Quicktime from the Quicktime website)
BvSCC_texted (QT Domestic Trailer 1920X1080 (391.1Mb) encode)
BatmanVSuperman CCT (MisterXDTV: corrected/PC levels encode)

Apple Quicktime is cropped (1920x816)
The other two are uncropped (1920x1080)

I indexed the 3 trailers with DGdecNV as a vanilla index (no fitlers, direct decode; no DirectShowFilters that would alter image data).
Image data gets altered through media player screenshots as it depends on the video renderer.

AppleQT (1920x816)

(looks "grey")

QT Domestic (1920x1080)


MisterXDTV: Corrected/PC levels (1920x1080)


QT Domestic and Corrected look identical.

================================

Compare: (hover mouse over image to see second image)
http://someimage.com/compare/gawHqDp/bLFnQ5u
Image 1: MisterXDTV (Corrected/PC levels)
Image 2 (hover mouse): QT Domestic
QT Domestic and Corrected look identical, even though different ranges.

================================

I also ran each trailer through Avisynth to check Y (luma) for any frames out of "TV range" (16-235).
I didn't scan chroma levels, just the Y plane.

In the following Pastebins, you can see all the frames that are outside TV range (below 16, above 235).
Apple Quicktime
QT Domestic
MisterXDTV (Corrected/PC levels)

Apple QuickTime...
is mostly within TV range for encode.
Only a few frames outside TV range.

QT Domestic...
is mostly outside TV range, but does not drop below 10.
Average looks to be something like 12 or 14 for minimum Y plane luminance.

MisterXDTV (Corrected/PC levels)...
is mostly outside TV range, and goes very near to zero.
You can see a very wide range for the Y plane.
To find the average, without guessing, you'd need to be good at EXcel or something.

Here's the script I used for checking "OutRange" on the 3 trailers.
Found it in doom9 forums.
http://pastebin.com/TuQgZuLs

================================

So, after looking at all that, I don't see a real difference between QT Domestic and MisterXDTV corrected encode.

It really boils down to what media player people are using and what the video renderer is how the codecs are set up.
Naturally, those with high-end equipment who calibrate will be quicker to catch onto minute details.

[sparktank]

PS:

Here's screenshot of the YouTube version of...
MisterXDTV (Corrected/PC levels)


And the OutRange log...
http://pastebin.com/nLjBsZZ8

Nearly the same levels as the encode.
But PQ just drops when uploaded to Youtube.

[sparktank]

paste for outrange Avisynth script got removed on Pastebin.
Here's the script on doom9 forums.
http://forum.doom9.org/showthread.ph...ge#post1624949