Magic mask in Fusion, leaves black traces

I made a video, and remove the background using magicmask in Fusion. It worked mostly ok.

If you watch the video at the end, you can see there are black spots that move around my head, when my head moves. What is the best way to get rid of that for a cleaner look?

Hey

This is because the matte constantly switch between pixels to find what's part of you and the BG (like semi-transparent pixels). You can also see btw that the mask isn't "perfect" anyway, you can see black borders around you (but this is not for the same reasons off topic here especially if you're ok with what you have).


You could either refine the mask in the MM node (I can't go further here and now, maybe later if you reply but I think less options are available compared to MM in Color), or add a bitmap node after to restrict the threshold (pretty likely the easiest and more basic way to fix it).
Options/parameters of a MatteControl node might help as well

Yes please go into more detail. I was going to use the color tab to get rid of the background. But I lost the youtube tutorial on that.

The first time I used the magicmask in Fusion, it worked perfectly. But I had to do another take of the video, and redo the MM, and then for some reason, even though the background did not change, it did not work as well the 2nd time.

Hey

Well ok, I will later on today... Is your clip long ?
Ideally you may post a few seconds of it ... Do it in PM if you feel more comfortable with.

Anyway, prior you answer with anything, the issue is all about restricting the matte to round and consistent values. Anyone using DepthMap nodes encounters the same, when you have to isolate mattes in Z.

It might be a question of noise though, but given the tools involved , it's likely what I wrote above.

I used the magic mask in Fusion page that is in Davinci Resolve. I just drew a line on me and the desk. I put a link to the video earlier, it is about 3 minutes long. The last 30 seconds is where it is the worst.

In the video editor, I also drew on my computer desk. I also used dynamic zoom in the edit page, and zoomed in on me a bit.

Hey, thx but actually I saw the video above
I was writing about you alone, without the BG, I mean only the clip on which you put strokes on , see ?

The background that is shown in the video is just an image I downloaded from the internet.
I did not use anything else to remove the original background, I just used magicmask in fusion.
I did not use any depthmap nodes that I am aware of.

Do you want a video of just me with out any background? I am not clear on what is needed or what you want to see.

Thanks for the help.

Do you want a video of just me with out any background? I am not clear on what is needed or what you want to see.

Yes ! We eventually understand each other
I'd like to have the video where YOU are alone, meaning the one you used to put MM strokes on yourself...Obviously what you put in the BG in the end is up to you and not interesting for the purpose of investigating the matte that MM creates, to be clearer.

Thanks for the help.

My pleasure. BTW I didn't even take time to see and listen your video but I found the topic very funny, I mean surprising

If it appears to be too big for wetransfer or so, just send the subclip that's problematic

All right I just exported the entire project with all the files, and then used 7zip to compress everything. And put it on google drive. Let me know if you have any problems.

https://drive.google.com/file/d/1fIFx3w ... sp=sharing

I don't have a solution to your Magic Mask problem except maybe use a very mono tone background or green screen when shooting your talking head.
I do though have a possible solution for reducing the cost of dating. Have you ever thought of dating only women in prison? That would keep the cost down, unless when they are eventually released, they go and burgle your house or something unromantic like that.
Sorry I can't help it.

I had a green screen in 2003, and gave it away, I was stupid. I would love to get one again.

The odd thing is that the magic mask worked perfectly the first time. And then this last time, it failed.
I was following some guy along on a you tube tutorial, and doing everything exactly as he was doing it for learning fusion. And it did not work on my end. I had to start over multiple times, and then everything started working again in fusion just fine.

So its just software or a bug.

Thanks again for the help.

Hey
I'm processing a part of your video... Just for the fun of it I'd say.
I'll give you news in a few hours hopefully, but what - 3 things - I can tell so far is pretty basic :

- yes, I confirm that ditching your good old green screen was not the best idea you've had actually, not necessarily for its default key purpose, but also just for the matter of having a kind of consisting BG place (meaning it could be another color)

- if you know you're just left alone in a room, at least don't add the more issues you can, by putting on the BG a yellow shiny plate behind your right shoulder, a bunch of random cases filled with different color stuff, so many random stacked furniture which would defeat a luma keyer, etc etc...
Only the cute cat doesn't really interfere

- not important if one of the 2 things above had been respected : the video file is... well, not shot on Arri Alexa, if you appreciate euphemism . This adds dancing edges pixels; but again, no huge problem if you hada solid BG

Anyway, I'm confirming testing it...