jittery motion with trackers

[cui junga]

To what direction does the composited frame go, up and down or sideways? How does the cam pan just horizontal, vertical, or horizontal going up?

[Kenzo]

Keyser_Soze wrote:

actually combustions tracker isn’t escpecially good. can you get somebody to track your footage in another app? like flame or mokey. they are rock solid.

Huh? I use both flame and combustion. The trackers are exactly the same. If you can’t get a good track out of combustion you won’t get a better one out of flame. Also, it’s been my experience that combustion/flame have one of the best trackers on the market. I can’t speak for Mokey, but I don’t know of anything else out that is better for 2D tracks.

[guillem ramisa]

Quote:

Huh? I use both flame and combustion. The trackers are exactly the same.

I use both as well and that is not my experience. They don’t “feel” the same to me.
If you haven’t tried mokey, do that! It’s a really cool 2d tracker.

[greek]

would be realy interesting to see some of the footage …

robert

[Kurt Judson]

patdawg wrote:

I use both flame and combustion. The trackers are exactly the same. If you can’t get a good track out of combustion you won’t get a better one out of flame. Also, it’s been my experience that combustion/flame have one of the best trackers on the market.

Do you work with interlaced video? I saw people working with Flame and their trackers were perfects but their original footage were film. I allways work with video and as I told you in aaall my previous posts, I try almost everything but the jittery motion is always there. 🙁

I can’t send original material because is too heavy (about 60 MB, 2 seconds)

Carolina.

[Kenzo]

carolina wrote:

patdawg wrote:

I use both flame and combustion. The trackers are exactly the same. If you can’t get a good track out of combustion you won’t get a better one out of flame. Also, it’s been my experience that combustion/flame have one of the best trackers on the market.

Do you work with interlaced video? I saw people working with Flame and their trackers were perfects but their original footage were film. I allways work with video and as I told you in aaall my previous posts, I try almost everything but the jittery motion is always there. 🙁

I can’t send original material because is too heavy (about 60 MB, 2 seconds)

Carolina.

Yup, interlaced video all the time. I won’t say I’ve never had a problem tracking, but I’ve never seen a difference in flame’s ability to track a difficult shot versus combustion. Have you tried deinterlacing your footage, and then tracking?

[velislav]

Although it may sound stupid, but did you try blurring youre material to a degree that your tracker/marker/corner/whatever is still trackable?
I had the experience that sometimes the tracker sits smoother on a spot, if you “clean” the marker/corner/etc from “too exact” information.
The FLAME/Combustion tracker is pretty powerfull and stable .. even on blurred material. If this works, you can just delete the blur afterwards.

Marc

[Anonymous]

“combustion tracker is not very good…”

I disagree. I’ve done tracking with it on shots that are very fine, with slow pans, without having to adjust curves or anything.

If you’re tracking points are reasonable, you should be able to produce a good result. For sure, you need to de-interlace the footage, or at least go into the footage operator and use one or other of the fields. Generally the default setting for the tracker should be used, on “fixed” “100%”. You should increase the size of the tracking boxes to get a better result.

You can also trick the tracker by changing your footage a bit… add a brightness/contrast operator and increase the contrast to try to improve the track.

Watch the progress of the track very closely… if the footage is grainy or not too sharp, you may notice in the tracking box viewer, a slight shift or change to the tracked point. If this happens, stop the track, go back to the frame before, and reset the tracking boxes, and then restart the track from this point. Repeat this process until you finish. This process is sometimes necessary if the tracking point changes too much. (Don’t use roaming, it’s useless.)

Good Luck.

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