Media Composer – Basic Motion Tracking 101



in this video we're going to look at tracking an avid media composer so we can do things like this and be sure to download the scenes you have to catch your shows on the go only for Windows Phone alright so let's go ahead and get started here so what we made there was a fake commercial for our fake show cop drama Thursdays of course we also use title ER Pro for the lettering there and what we're going to do in this video is use our workhorse in the blend category 3d warp you really need to know and love 3d warp because they can do so much now we're just going to cover the basics of tracking we're not going into an in-depth study of it this will just be the basics that will hopefully get you up and running so let's go ahead and get started here is what we're going to track we're going to recreate this commercial here but we're going to use different footage so I just hit play here you can see we have motion on our cell phone there so it's not as easy as just overlaying a video on that may activate our video one track I'll just pop this in just to show you real quick here then we'll come up to the video too and we'll scroll up to the footage we want to use which is right here I've already got it marked with an in and an out I thought that was the best scenes from our fake cop drama commercial here so I think this here will be best for our screen there okay so let's just pop that on video too of course that's covering up our video too right now so I'll come over to blend 3d warp pop it on there go into effects mode and we could come into scaling fixed aspect ratio size it down come in here to rotation and sort of rotate it around about where we want and of course use the left and right keys on our keyboard and we'll scale it down even more and we can use the up and down keys or left and right keys on our keyboard and we can also grab our mouse here kind of get it into place just keep sizing it down and one thing I like to use is a corner pin actually so we can actually just grab this corner pin tool here just grab that and then we can pin it right to the corners which makes it really easy to get this set up so you're not having to use your position and scale so much okay that's not perfect I can hold down control here on my windows and sort of zoom in you see as close you know it's close enough of course the problem is it's only good for that one frame once we start playing through and our phone starts moving well then it's out that we'd have to come back into a fix mode and maybe try to do key framing or something but know that's we're tracking comes into place so first let me go ahead and remove this effect first off here we can see this footage doesn't actually cover the amount of time I want it to cover so first let me come in here the time warp this really doesn't have anything to do with tracking I'll scrub time warp throw it on here first let's slow it down to somewhere around 85 84 that should be okay and then I can drag it out hopefully okay so you actually need to slow it down a little more because we're getting the frame after that I didn't want okay so we'll just pop right back in here and let's just slow down more go for about 81 that should be good then we'll scroll through make sure we just get the scene as we want and that's good okay so as you can see we have our footage over top of our cell phone footage this is how you want to set it up we have our cell phone footage on video track 1 or whatever we're going to be tracking this in this case and we have the video that we want to be on top of the cell phone of course on video track 2 so above it right so let's go ahead and start tracking here first we'll come in here to our balloon category will use 3d warp just drop it right on top pop in here to effects mode and the first thing we need to do is scale it down so fix the aspect ratio we're going to scale it down now as you saw earlier we use the corner pin which I'm going to use again but it's important to sort of get it close to where you want first if I just start corner pinning now you see it's not going to work ctrl Z ctrl Z all right so let's go ahead and get it scaled down a bit and the most important here make sure we're at the beginning we'll go ahead and do our rotation so we get it about where we want it use the arrow keys on the keyboard and is still a bit too large all right we'll start with that then we'll come back to our corner pin we have a corner pin tool right there select it and I'll just start pinning this to the corners right there right there about there out there and of course that's off and also our magic we have plenty of other things we could do we could do skew axis a crop if you need to crop of course we have position perspective those controls but I'm just going to basically use the scaling rotation and corner pin alright and we can again I'll hold down control on my windows zoom in there so I can get this perfect or pretty perfect anyway all right now zoom out and I'll zoom in here towards the bottom I want to make sure I cover up all that green that's shining through but I don't want to get her hand so that looks pretty good from what I can see of course it's not going to look good as soon as we start scrolling so we'll come back the first frame there and I think that looks pretty good what I can tell looks all right now what we want to do since this is supposed to be on a cell phone and of course it depends on what you're going to be tracking and exactly what effect you're using to track keep in mind you can track with a lot of different effects and have a media composer we just happen to be using 3d warp here just to show you the basics what I want to do is put a border on this just a plain black border we have all kind of borders to choose from bevels and round things like that but I think for the cell phone the just plain black border looks pretty good just like a bevel on you know on a real screen you'll have sometimes you'll have like a little black band around it just sort of adds a little contrast sets it off a bit I don't want a lot just some try that we zoom in you can kind of see it a little better there so I'll just pull it way up and you can see what's happening now so we just want a bit of a black border and just a little bit of softness I don't like a lot not for this okay I think that looks pretty good all right so now what do you say we go ahead and start tracking I'm going to hit ctrl shift F let's see this full screen and yeah it's a little bit off here at the very beginning frame I want to make sure I fix that first so pop back in here make sure at the very beginning a corner pin let me hold down control I'm going to zoom in here yeah pull that down a little more this here is come out a little more there control shift if I want to see full screen all right I'm not seeing any green there looks pretty good like that and of course we play through it's not going to work that's why we're going to track it we're going to use corner tracking here just expand it and right now we have four trackers we'll just turn them on as soon as I turn one on it opens up my tracking window for me which if you can't get it back open just come right down here to our tracking tool and there it is okay I'm going to turn on all four right now and we also have the option to stabilize the track we don't want to do that in this case move this over here move this over so we can see what's going on so right now we have these four trackers but we have five spots that we can track now first of all you want to track an area of sort of high contrast something that Media Composer can see is different from all of the pixels around it and in this case we have some great things that track these nice targets for us so let's go ahead and start this we'll just grab a tracker place it over these targets okay and we'll just as a bit in a minute open up our tracking tool and come right here because we have five things that we can track want to go and create a new tracker and this will be similar to whatever you're tracking I'm just trying to show you the basics here all right so there are our all of our trackers place let's go ahead and he'll done control and I'll zoom in here zoom in again I want to make sure I get these right in the middle and in here you can see these bounding boxes what we want to do is make sure this inner target box this small is possible but make sure it contains whatever you're tracking in this case our targets and this window here is the search area we want it as small as possible but we want to sort of contain as much motion as possible we don't want our target to be getting out of this box but at the same time we wouldn't want to have this box to be huge let me zoom out a little bit so you can see what you know we wouldn't want it like this because it's going to take forever to search but we wouldn't want it like this because then the tracking date is going to be wrong so choose an appropriately sized target and search box there control and we'll zoom in here make sure this is right on the X it doesn't have to always be perfect but I like to get as close as possible I think this box is already big enough let's pop in here that looks good zoom out zoom out me check these here that's not bad make this a little larger zoom out a bit I think this box is fine we'll check it in a minute and then we'll pop this right there and right there okay now if we start through open up our tracking box join the tracking day we can show the effect results we don't have any yet okay and we have these options over here to enable offset tracking we have this study guide I'm not going to get into this stuff we have enable smoothing we're not going to get into all the options of this what you can do actually if you want to learn a little more you can right click pretty much anywhere media composer – what's this it will open up the help guide and you could go in here and look for tracking and it has a lot of information about tracking or you can also search if you want to search for say tracking all right and then we have able to tracker an effect editor all kinds of stuff about tracking in here that you can learn more about but let's go ahead and continue on here with the basics alright so once again our video track is on top of our cellphone track we have our tracker setup let's go back to our tracker tool okay we have all these set up now one thing you'll need to choose we have correlation tracker fluid tracker or fluid stabilizer we're just going to use correlation tracker again you can read up on those this is just again this is just the basics but one thing you'll definitely need to check is the track background or track foreground this track let me go to effect results this track here which is our video is on top of our cell phone so in that case we want to track the background okay because the effect is on the video and we want to track the background alright so we have all of this set up it should all be set up now we actually generate be tracking data it's very easy I'll just go back to tracking data here and we'll just have this on all okay so let's go ahead and start tracking you have to do this first so just click this button right here to start tracking and media composer is going to start playing through as you see is tracking and this process can take some time especially if you have huge search boxes or you're checking a big long portion it'll probably take me 45 seconds total here okay and there it is now we can see because our display is on tracking data we can see the tracking data right here if we go to effect results we can see what happens we can scroll through here and say hey look at that that's a lot better than when we just you know sized our image down and we started scrolling through install that oh well now it's not on top of the phone well now it is now it's staying with the phone on those tracking points again go back to the tracking data to see what's happening here you can see all the movements that that's happening that Media Composer tracked for us and I mean imagine having to keyframe all of that I mean I've keyframe hundreds and hundreds of frames and you know it's it's awful this is much better so the important part is make sure that it plays well and make sure that none of that green is showing through we'll just play through it real quick here it's going to be a little slow because we haven't render the effect yet but from what I can see it looks pretty good okay so now what we would do is render the effect which I'm going to do and we can go ahead and finish up our fake commercial but before we finish up our commercial let me just the ctrl shift F go fullscreen here I'm gonna use my arrow keys okay so I can see now that we're getting a little green through here and we could try retracting it or what I'm going do actually because it's only for a couple of frames okay it's like they're so only a few frames what I'm going to do I'm just going to come back in here I should pull this down here let me hit control I'm going to zoom in here I'm just going to pull this a little more over there and I think over here no problem there and mmm think about going in here to perspective we could change that around you know I'm gonna leave it alone I think I think that's okay drill shift F and me go through here now I'm just making sure with every movement I'm not seeing any green okay I'm seeing a little green along this line here yeah it's not quite large enough I can make it a little bit larger just to make sure everything is perfect you zoom out a little bit there so I can scale this up a little bit if I wanted to and we can always retrack maybe have like a little bigger of a area that we want to track or something okay so just keep that in mind so that is the basics of tracking now we'll go ahead and finish out our commercial throw and Tylar pro 4 alright delete the track that's on there come back here and I'll go ahead and finish this here myself and after I get this done we will watch it all the way through and see how the tracking went and be sure to download the C and Q app to get your shows on the go only for Windows Phone all right so that is the basics of tracking an avid media composer

7 Replies to “Media Composer – Basic Motion Tracking 101”

  1. Inky Bird says:

    at 1:45, how did you add a 3d warp to the layer on V2 and get it to NOT affect the BG layer on V1? Every time I do that and mess with scale it affects both layers. Searching the internet and forums confirms this is how it affects all the Avid users I've come across. Would love to know!

  2. so after all that, then you would isolate the video track and key out the green screen?

  3. Mr Cherbis says:

    с ума сойти какое же долгое вступление…

  4. MrUpgrayddd says:

    Good tutorial! Thank you, sensei.

  5. Thanks so much for this tutorial!

  6. That was great lesson sir: 🙂

Leave a Comment

Your email address will not be published. Required fields are marked *