Corner Pin not accurate in HD footage
by Greg DiGenti
on
Oct 29, 2009 at 12:22:28 am
I've read all the creativecow posts that seem to have anything to do with my issue, watched a lot of tutorials on the Imagineer site, and read the Mocha manual, but I can't seem to find a solution for my issue.
I've got a clip in HD 1280x720 that I've tracked (chalk drawing on the ground) and added a surface so I could use it for corner pin data. In Mocha, the track looks perfect. However, when I paste the data into a solid in AE, the motion and the location of the corner pins are WAY off, not at all where they are when viewed within Mocha.
The keyframes begin and end in the correct spots in the AE file, so there doesn't seem to be any issue there, and the PAR in Mocha is set to HD, so the aspect ratio seems to be correct.
Re: Corner Pin not accurate in HD footage by Ross Shain on Oct 29, 2009 at 1:06:54 am
9 times out of 10 this issue is a mismatched project, frame rate or PAR setting.
Please double check that both the AE composition AND sources (interpret footage) match fps, PAR and image size. Double check mocha proj settings as well.
Next, is the source layer the same as the composition setting in AE?
You can post us your project to look at. Just support@imaginersystems.com where it lives or let us know if you need an ftp to post to.
Best,
R
Ross Shain
Imagineer Systems
www.imagineersystems.com
Re: Corner Pin not accurate in HD footage by Greg DiGenti on Oct 29, 2009 at 7:38:58 pm
You're probably right, but I can't find where I went wrong.
-- The fps on both the clip and Mocha settings are 25.
-- The pixel ratio of the clip is HD 1280x720 and in Mocha the PAR is set for HD.
-- And the clip size is 1280x720 in the Mocha settings if that's what you mean by image size.
I've sent you a yousendit link so you can take a look at it and see where the problem lies.
Re: Corner Pin not accurate in HD footage by Greg DiGenti on Nov 2, 2009 at 6:44:14 pm
You didn't? I sent a YouSendit link to support@imagineersystems.com last Thursday as you suggested. (You actually said "imaginer" in your post and it originally came back to me, but I fixed the address and re-sent it.)
I just sent it again, please check that email and see if you receive it.
Re: Corner Pin not accurate in HD footage by Greg DiGenti on Nov 3, 2009 at 7:30:00 pm
I sent the links to you yesterday in an email… did you receive it? Three S's in "rosss" right? I noticed you spelled "systems" wrong so I wanted to be sure it wasn't a typo.
Re: Corner Pin not accurate in HD footage by Ross Shain on Nov 3, 2009 at 9:41:20 pm
Ok, I apologize for not getting to this sooner.
Your issue is the solid was not the same size as comp.
You footage and comp are all 1280x720, sq pixel.
The insert layer (your solid) is 300x400. This layer needs to be 1280x720 as well.
In your project I created a solid same as comp size and the track seems to line up fine.
There are lots of ways to deal with inserts that are not the same size such as scaling and pre-comping. Also, Red Giant's Warp gives the user dual source and target pins allowing you to deal with mismatched sources.
Hope this helps.
-R
Ross Shain
Imagineer Systems
www.imagineersystems.com
Re: Corner Pin not accurate in HD footage by Greg DiGenti on Nov 7, 2009 at 9:57:05 pm
Beautiful! I'm glad it was something so simple. I hate to have to purchase a $200 plugin to overcome the issue of mismatched source aspect ratio, so I'll come up with another workaround until I can afford it.
Anyway, thanks for your help! I can now proceed with the projects that were on hold until I could figure out what I was doing wrong!
