Any way to use color charts for automatic color correction?

Teagan wrote on 3/2/2020, 11:04 AM

I'm researching better ways to color correct my footage and came across color charts and a certain other program (EDIT: Davinci Resolve) that has you just line up the type of color chart with the boxes and press a button and it magically corrects all your colors, if you have the right gamma and color space selected.

Can Vegas pro do this and if not, can it in the future?

Comments

Musicvid wrote on 3/2/2020, 11:07 AM

Why don't you point us to your "certain other program" so we can see for ourselves?

Teagan wrote on 3/2/2020, 11:15 AM

I was not sure I was allowed to name it because it's a big competitor with Vegas pro. Davinci resolve allows you to do this and I found it with this video:

Start at 0:42

VEGASPascal wrote on 3/2/2020, 12:33 PM

I was not sure I was allowed to name it because it's a big competitor with Vegas pro.

I believe it is okay to say Davinci Resolve. We also like Premiere, Resolve and all other video editing programs and hope to support your workflow with VEGAS. I put your suggestion on the users wish list. 😀

Former user wrote on 3/2/2020, 12:48 PM

I am surprised it took somebody this long to do this. What a great tool.

AVsupport wrote on 3/3/2020, 12:41 AM

+1.

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Reyfox wrote on 3/5/2020, 6:28 AM

Impressive for sure. A VP18 wish list item?

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Alan-Tutt wrote on 3/5/2020, 9:31 AM

I've been hoping for this feature for a long time. However, I've found that it's not always perfect. A good starting point, though.

Howard-Vigorita wrote on 3/5/2020, 10:42 PM

I tried doing just that recently and it seems to have worked. Before the shoot I did a white balance calibration of the camera. Did the rest with the Vegas Color Curves track FX:

Teagan wrote on 3/6/2020, 8:15 AM

I tried doing just that recently and it seems to have worked. Before the shoot I did a white balance calibration of the camera. Did the rest with the Vegas Color Curves track FX:

That leaves too much green in my footage from HLG and doesn't really work well for me with my workflow. It would probably work for regular footage, though, but I am not a fan of how adding contrast after doing this clips my whites - and it's too dark after doing that. The LUTS I made in vegas combined with a free LUT I got online work better.

Also, this seems to only do linear curves while what I need is automatic logarithmic curves, which I did in my luts - painstakingly. I now know exactly why people sell good luts instead of making them free.

Howard-Vigorita wrote on 3/6/2020, 9:49 PM

Actually the exact same thing I did with the Color Curves FX can be done another way... there's also a Color Curves section on the left side of the the Color Grading screen that works the same way. Advantage being that color balance, gain, and gamma, and offset tweaking can be done there too. And you can make the curves as twisted as you want after auto-adjust. If you want to tweak one color channel, just uncheck the others, click on the curve/line and the handles will appear. When done tweaking, export to a LUT right from that same screen. The LUT is an extra step but is more easily reused with the LUT Filter FX and presents a lighter processing load. In that New Years Eve show I shot there were 4 different 1-hour acts under the same light... I think I'll do it with LUTs next time.

Former user wrote on 3/7/2020, 4:55 AM

In the Resolve tutorial they show you how to use the color chart manually with masking. This should be achievable with vegas pro go to 3:20 in video

3d87c4 wrote on 3/8/2020, 4:12 PM

So...can Vegas read the LUT files generated by Davinci? If so, calibrate in Davinci and use the LUT in Vegas?

 

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Teagan wrote on 3/8/2020, 4:22 PM

So...can Vegas read the LUT files generated by Davinci? If so, calibrate in Davinci and use the LUT in Vegas?

 

Yes! That's part of my workflow as I can't find a way to do the hue to hue comparison and this feature that I'm requesting. Vegas reads the 33 point LUTs and the one level lower than 33 point.

EDIT: I meant it Vegas Pro supports Davinci's 65 and 33 point LUTs. Sorry.

Grazie wrote on 3/12/2020, 4:25 AM

Stunning!

ScrapyardFilms wrote on 3/12/2020, 8:43 AM

@VEGASPascal is the content of this "wish list " a secret? If not, I would love to know what's on it and what the developers are working on! I have a few suggestions that I believe can help VEGAS Pro become better than Premiere and Resolve and it would be great if they came to fruition within the next couple of builds :)

VEGASPascal wrote on 3/12/2020, 9:03 AM

@ScrapyardFilms This "wish list" is a secret and exist since the very beginning. 'Color grading' and 'Nested timeline' came to VP17 but has been on the wish list for a long time (Slow Motion, Warp Flow Transition, Mesh Warp, Video Stabilizer as EventFX and some other wishes came from this community last year). We naturally try to improve VEGAS and are very interested in concrete ideas that have a large user base. Of course, I cannot promise that these ideas will come in an update or VP18 (since we already have our milestones).

ScrapyardFilms wrote on 3/12/2020, 9:36 AM

Nice. I'm super happy with all the improvements so far so kudos to you and the team who improve it for us. Well just in case they're not already on the wish list, here are a few ideas.

1. Adding a multitude of "Color Curve Lines" like the one the plugin Graide Color Curves offers. Premiere and Resolve already have this feature built-in and I believe it's an essential part of color grading and precise color correction. Maybe to save time you can partner with him since he already built one that works amazing for V17.

2. Adding a "Flesh Tone / Skin Tone Line" to the Vector Scope. Premiere, Final Cut, and Resolve already have it and I think it's essential for Color Grading / Color Correction. This one should be fairly simple as your just adding a line on / near the 117 degree mark (correct me if I'm off on that degree). https://imgur.com/p9v70RR

3. The "Automatic Color Chart Matching" I believe is essential as well. Resolve is great for this feature as it basically corrects colors and makes them damn near perfect. My current process is this: Record in HLG on GH5s in 10-bit 400Mbps > import into VEGAS > Open Color Grade Menu > Add Rec.709 as input LUT > correct white balance with curves > render it > import into Resolve > color match using my SpyderCheckr 24 > export > and import again into VEGAS. It'd be really nice to skip the whole 'Resolve' step. Also on a side note Resolve lets you choose which color chart you own like the Passport or Spyder.

4. Adding RGB toggle switch options for colored overlay modes (Y,R,G,B) for the Waveform graph? This will help make sure the white balance is correct along with the luma levels of the color scopes. Basically merging RGB Parade with Waveform Luma and Composite. https://imgur.com/05SNXS2

5. I'm not sure if this exists already but if it does, it's hard to find. The ability to render a video with 5.1 surround sound (or any number of speakers really).

Those are just my 5 suggestions that I can think of off the top of my head. Thanks for listening @VEGASPascal and @VEGASDerek

Teagan wrote on 3/12/2020, 9:53 AM

Adding to this, does Vegas pro have the hue-to-hue color adjustment for use with the vectorscope when you have only chromatic colors showing in a mask? Or is that only in resolve? It's essential to my work.

Howard-Vigorita wrote on 3/12/2020, 10:21 AM

@3d87c4

So...can Vegas read the LUT files generated by Davinci? If so, calibrate in Davinci and use the LUT in Vegas?

That works surprisingly well! I'm still focused on doing it as automatically as possible, as a starting point, and the LUTs I get from DaVinci matching seem consistently better requiring the least further tweaking compared to doing it all in Vegas which seems to push things a little harder according to the scopes. I think DaVinci's dropdown to choose a specific color chart mask is better than the Vegas color grading button to throw on a bezier mask which is more like the power window in Resolve... perhaps the Magix team or someone can come up with some bezier presets for that. I'm not getting the hang of gaining acceptable results from the DaVinci hue to hue thing but it would be nice to have that in Vegas too.

@Teagan Only way I know of accomplishing something similar in Vegas is to tweak the individual rgb curves.

 

Howard-Vigorita wrote on 3/12/2020, 10:23 AM

@VEGASPascal I would also put further generalization of LUT and grading on my Vegas "wish list."  Granted, getting LUTs to work properly when applied to tracks was a big improvement, but I'd like to see LUT export from FX filter packs and color grading also being able to work on tracks too instead of only on clips.

ScrapyardFilms wrote on 3/12/2020, 10:32 AM

@Teagan VEGAS Pro does not have what you're wanting in the screen shot. I use a plugin called Graide Color Curves for that.

ScrapyardFilms wrote on 3/12/2020, 10:42 AM

Ooh and also if you can add some sort of Video Noise Reducing plugin, that's be awesome too. Final Cut and Resolve Studio have video noise reducing plugins inside their programs as well.