Then what's the difference between applying FFmpeg's Equalizer and applying color correction fx like the Levels FX as Video Output FX in Vegas Pro?
For Vegas darker renders, is a solution possible to solve this?
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- Offizieller Beitrag
For me these are two separate topics:
1. A bug / known deficiency in Vegas Pro
2. An additional filter in Voukoder (for whatever purpose)
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"So if your source file is based on the limited color range (which is the case for 99% of all YUV 4:2:0 8 bit files) …"
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Quick comparison in vegas pro 15.
x264vfw with these additional commands (Extra command line):
--range tv --colorprim bt709 --transfer bt709 --colormatrix bt709
[Blockierte Grafik: https://i.imgur.com/Emajbfu.png]
Voukoder with just x264:
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Would it also be possible to include a filter for tv range/pc range?
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Ok the output is still dark like the screenshots above, when using the new color space filter with:
--range tv --colorprim bt709 --transfer bt709 --colormatrix bt709
It seems like its a vegas problem, like steve said, because the only "encoder" who isnt that dark is x264vfw, but i don't know why.
My knowledge is way to limited, but i know that vegas is converting all video inputs to rbg ... maybe thats a problem?
This describes the problem exactly: https://forums.creativecow.net/docs/forums/po…=983265&pview=t
So i think i need to apply the "levels" filter everytime
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- Offizieller Beitrag
I did not want to add anything to this discussion anymore but It's itching me pretty hard right now:
This is the original document I once sent to Magix explaining them the preview is broken (in most cases). This behaviour has been confirmend by Magix.
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Exactly but its also the output/encoded video.
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So i tested some thing with FFMPEG and with this parameter i get the correct colors:
Codeffmpeg -i "G:\test.mkv" -vf "scale=in_range=pc:out_range=tv" -pix_fmt yuv420p -c:v libx264 -preset ultrafast -crf 21 Output.mkvBut this is only for a already encoded video with Vegas, because Vegas somehow set the pc range flag?
So the solution is to tell the encoder that the input is in pc range if i understand the filter correct:
-vf "scale=in_range=pc:out_range=tv"
When i try to encode directly from the source file (No encoded Video from Vegas) i need to the the filter to:
-vf "scale=in_range=tv:out_range=tv" (It depends on the source file).
I don't know if this is possible to implement and if this is even the correct fix for this problem.
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Here I solved this issue using the SeMW extension (free). Enable its Preview levels extension (Tools menu > Extensions), which will put a new dropdown menu above the Vegas preview window. In that dropdown menu choose "PC". You can safely render with that set, as it applies to preview only.
https://www.vegascreativesoftware.info/us/proxy/05130…/en/extensions/
More information can be found in this Vegas forum thread.
https://www.vegascreativesoftware.info/us/forum/faq-w…review--104567/
https://www.vegascreativesoftware.info/us/forum/help-…page=2#ca671873
https://www.vegascreativesoftware.info/us/forum/side-…11385/#ca688280
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- Offizieller Beitrag
That is not the effective solution to what we are trying to resolve here!
Actually we're discussing any possible solution here. I want to fully understand this issue.
Input
I opened "bars.mp4" in MPC-HC, took a still image ("Reference") and here it is:
Preview
I imported it to VEGAS Pro 17, dragged it to the timeline, saved a still image ("Preview") from VEGAS and pasted it here:
What we all notice:
- White is not as bright as the white in the Reference
- Black is not as black as in the Reference
- Gray is brighter than in the Reference
As the Preview is not equal to the Reference I consider it as ...
- ... the colors of the Preview are brighter than the Reference
- ... the VEGAS preview is broken as it does not show the source video correctly
Output
I will now render it with Magix' very own encoder by clicking "File" > "Render as" and selecting format "MAGIX AVC/AAC MP4" and preset "Internet HD 1080p 59,94 fps". I get a new mp4 file, open it with MPC-HC and save a still image ("Output") from it:
Exporting it with Voukoder looks like this:
Conclusions
- Reference is not equal to the Preview => Preview is not okay!
- Output is equal to the Reference => No issue with rendering / exporting!
Whats left is that the preview is not okay:
- ... which has been confirmed by MAGIX
- ... SeMW tools have been developed to fix this
I don't see any other issues. If I did something wrong or miss anything please tell me. Do your own tests with the bars.mp4 file attached to this post and help me to understand this (if I didn't).
But please, from now on: Let's discuss this with facts and measurements only!
P.S.: This has been done entirely in 8-bit mode.
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Okay with the bars.mp4 i get the correct output.
When the source is from UTVideo or MagicYUV (.avi lossless formats) i get the dark output.
I tried to record with Dxtory, MSI Afterburner and OBS Studio (OBS uses the FFMPEG Version of UTVideo).
Steps to reproduce with MSI Afterburner:
Software
Install utvideo-20.3.0 (Newer Versions have problems with dxtory, vegas and afterburner)
Install MSI Afterburner with Rivatuner Statistic Server
Afterburner
Open MSI Afterburner Settings > Video Recording (Videoaufnahme)
Screenshot with the settings: https://i.imgur.com/tnMpFPC.png
I also tried different colors for UTVideo like: 4:2:0, 4:2:2 and RGB
Rivatuner
In Rivatuner Statistic Server i make sure, that the
- Global Profile Application detection level is set to low
- On-Screen Display support: On
- On-Screen Display coordinate space: Framebuffer
Setup/Settings in Rivatuner:
Use dedicated encoder service > 64 Bit
Record a random Game
Vegas Pro:
...Import the video
Project settings
I use Vegas Pro 15 with these project settings: https://i.imgur.com/zvPzk3f.png
Render as
For example Voukoder with H.264 (x264):
crf=20.0 preset=medium profile=high rc=crf
EDIT:
Also make sure to use the full dynamic range for videos in the NVIDIA control panel video tab > Adjust video color settings > With the NVIDIA settings > Advanced > Dynamic range : Full (0-255)
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- Offizieller Beitrag
I created two AVI clips with BandiCAM & MagicYUV 2.2:
Reference Preview Export Limited Full It's a bit strange that the "Full" color range now looks strange in the preview but the result looks okay in both cases.
dream I will try to reproduce your exact scenario tommorrow. I still recommend using the "Limited" color range when using YUV. The footroom and headroom is used by some cameras for super-black / super-white. I've read this was a reserve in the good old analogue TV times.
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Joelson, We all know about that!
That SeMW extension has been discussed here already, even so.
That is not the effective solution to what we are trying to resolve here!
1.This is a Vegas problem, not Voukoder.
2.This problem has existed in Vegas for several years and developers are fully aware of it, but seem not to be interested in solving it.
3.Even if Vouk develops a definitive solution when using Voukoder, the problem will still continue when using other codecs.
4.So far, the SeMW extension is the most efficient solution to this problem. You just need to know how to use it in conjunction with FX Levels Studio RGB to Computer RGB that exists natively in Vegas.
5.Resolving this issue is the responsibility of the official Vegas developer, not the Voukoder developer.
Thanks Vouk for the Equalizer filter
I close here my participation in this topic.
![[Blockierte Grafik: https://i.imgur.com/Emajbfu.png]](https://i.imgur.com/Emajbfu.png){kind=link}
![[Blockierte Grafik: https://i.imgur.com/soNGG0i.png]](https://i.imgur.com/soNGG0i.png){kind=link}
![[Blockierte Grafik: https://i.imgur.com/4D61EZf.png]](https://i.imgur.com/4D61EZf.png){kind=link}
