Comments

klt wrote on 1/24/2019, 4:00 AM

There are numerous tutorials, how to do it, so I assume you try to do the motion tracking the right way. In this case I think you footage contains confusing motions and contrasts that confuses the motion tracker. I'd try to select a smaller area to track. Is that the cabin you want to track? Then I'd select only the label on the cabin, so the motion of the trees won't confuse the tracker.

Does it work so?

Grazie wrote on 1/24/2019, 4:33 AM

@klt Yes!

Al-245 wrote on 1/24/2019, 4:35 AM

Thanks for the tip.
I have reduced the area, even more so than the video below, but unfortunately the result is the same.
https://vimeo.com/313135185

klt wrote on 1/24/2019, 4:42 AM

@Grazie for me it works too 😉

@Al-245 can you show us exactly how you try to do your motion tracking? I suspect you do something the wrong way...

Grazie wrote on 1/24/2019, 4:43 AM

@Al-245 Erm...? Why have you got two Tracks? I’m confused.

Dexcon wrote on 1/24/2019, 4:46 AM

As per @klt … the tracking points need to be targeted to the edges of the cabin (gondola). Tracking points really need to be placed on the edges of the image element to be tracked, especially at a point where there is a reasonably clear color and/or luminance difference between the target and the background - that 'difference' is what the tracker needs to follow for an effective track.

At the moment, your tracking points are so far away from the gondola that the points are trying to follow the trees etc where there is no hard edge for the tracker to identify. Also, the target is relatively small within the frame.

Last changed by Dexcon on 1/24/2019, 4:57 AM, changed a total of 1 times.

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Dexcon wrote on 1/24/2019, 5:24 AM

Make sure that you are adding Bezier Masking via 'Event FX', not just via 'FX'.

Cameras: Sony FDR-AX100E; GoPro Hero 11 Black Creator Edition

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Windows 11

Dell Alienware Aurora 11:

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VEGASPascal wrote on 1/24/2019, 6:00 AM

Bézier masking is a point tracker. In the trees of the background you will find a lot of stable points to track. It is important that the tracking area is only within the cabin area.

Dexcon wrote on 1/24/2019, 6:17 AM

@VEGASPascal …

you will find a lot of stable points to track

... should that not be, " you will not find a lot of stable points to track".

Sorry to be pedantic.

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Windows 11

Dell Alienware Aurora 11:

10th Gen Intel i9 10900KF - 10 cores (20 threads) - 3.7 to 5.3 GHz

NVIDIA GeForce RTX 2080 SUPER 8GB GDDR6 - liquid cooled

64GB RAM - Dual Channel HyperX FURY DDR4 XMP at 3200MHz

C drive: 2TB Samsung 990 PCIe 4.0 NVMe M.2 PCIe SSD

D: drive: 4TB Samsung 870 SATA SSD (used for media for editing current projects)

E: drive: 2TB Samsung 870 SATA SSD

F: drive: 6TB WD 7200 rpm Black HDD 3.5"

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Monitor is 2560 x 1600 @ 60 Hz

Al-245 wrote on 1/24/2019, 9:11 AM

Dexcon : Added Bézier Masking via  'Event FX', Tks.

Here is the step by step procedure.
1 - Insert the video (First video)
2 - Insert new track
3 - Copy and paste the video (First video) in the new track
4 - Select the copied video (2th video)
5 - Move the copied video cursor (2th video) to the beginning of the video
6 - Drag FX Bezier Mask to copied video (2th video)
7- Adjusted tracking area inside the cabin edges, inside the red doors
8 - In Video Event FX I open Mask 1, Tracking, Start
9 - When Vegas finishes converting tracking, I move the Video Event FX timeline cursor to the beginning, but....

...the cabin loses passenger "tracking" 😟

https://vimeo.com/313178943

Vegas_Sebastian wrote on 1/24/2019, 10:03 AM

@Al-245 Try using a smaller mask that only covers the cabin for tracking. You will be able to enlarge the mask afterwards.

Al-245 wrote on 1/24/2019, 11:12 AM

sebastianS  I tried large, medium and small. Same result. But if the mask is very small, the program does not render and stops.

Maybe there's something wrong in Properties or Preferences ... I tried to disable GPU, Pixel format from 8 bit to 32, without positive results.

 

klt wrote on 1/24/2019, 11:37 AM

That's really weird. What if you don't duplicate the clip on timeline? What if you add beziermasking via eventFX instead of just dragging it there? If you look at event FX-es, waht's the order?

pan/crop - bezier mask....

or

bezier mask - pan/crop ...

???

klt wrote on 1/24/2019, 12:00 PM

OK, at 0:34 I see it's after the pan/crop. I tried what you did step by step, but I cannot reproduce the problem. Here the tracking works. The most strange is that at 0:34 I see the generated keyframes with varying X,Y coordinates. Then after a cut, I see a timelineplayback where the keyframes aren't on the screen, but the bezier's points are like nailed there, just like it didn't have any keyframe...

Am I missing something here?

GerY wrote on 1/24/2019, 12:10 PM

Tracking does not work, it does not hook the object

I've tried dozens of times

https://vimeo.com/313125732

Any suggestions ?

This is my Tutorial: Open it in Youtube

 

Al-245 wrote on 1/25/2019, 1:01 PM

GerY tks, but my problem is a little bit different

kit

- If I do not duplicate the clip I see only the restricted area (the remaining part of the screen is black) and the tracking unhooks
  - if I add Bezier masking via event (Video Event FX) instead of just dragging it from the left menu, tracking unhooks
- if I change the order: pan / crop - bezier mask or bezier mask - pan / crop, same result.

However I discovered 2 strange movements

- if I put track 1 in mute, 2 rectangles appear instead of 1      https://vimeo.com/313335250

- if I move the cursor back and forth in Video Event FX Bézier Masking window, the tracking works perfectly, but if I move the cursor back and forth in the Timeline, tracking unhooks          https://vimeo.com/313334863


 

xberk wrote on 1/25/2019, 4:19 PM

I think your Tracking Mask is working. Remember, it is a Bezier Mask that is doing a motion track and being applied. But you have not applied an FX to the masked area so you can't see it. The "rectangle" that outlines the mask area IS NOT THE MASK. You are expecting that "rectangle" outline to move as the track motion when you play the timeline. Obviously it does not.

Do it again but this time after you have done the "start" button and the tracking has been accomplished. Click on the "Plug-in Chain" to add another FX to the chain. Apply the Black and White FX. Run the timeline. Does the BLack and white area follow the tracked object?

Another way to see if the mask is tracking the object is (after you do "start" and accomplish the motion track) to "solo" the video track (the top track) that has the motion tracking applied. All you will see is the Bezier masked area tracking the object in a black field.

Try it with a fresh veg file.

 

 

Last changed by xberk on 1/25/2019, 4:21 PM, changed a total of 1 times.

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Al-245 wrote on 1/27/2019, 6:53 AM

Dear xberk,

I did more tests, and I found out what was my issue. The realtime visualization of the tracking (when you move the cursor on the timeline) is not showing proper results, the "rectangle" moves wrongly or simply stands still.

BUT when rendering the video, the tracking is OK. So my suggestion is to follow the steps you explained, and then just render the video without caring about the preview.

Thank you for the support.