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Question

Crash on adding camera to composition

Forum|Forum|4 years ago
July 8, 2021
2 replies
545 views

After adding a camera to a comp via script, AFX crashes on opening the comp.

After running this, open the comp and AFX crashes.

var myItemCollection = app.project.items;
var myComp = app.project.items.addComp('Composition Name', 1920.0, 1080.0, 1, 5.6, 25);
var newCamera = myComp.layers.addCamera('020_030_', [0, 5.6]);

When manually creating a comp and then adding camera via script, it works.

var newCamera = app.project.items.activeItem.layers.addCamera('020_030_', [0, 5.6]);

AFX Version is 18.2.0

Am I doing something wrong or is this a bug?

This topic has been closed for replies.

asdffgh8

Participant

posting here as i had similar problem and solved. my camera wasnt created via script but ae was instantly crashing when i opened the comp with the cam in it (the only camera in the whole project). Thanks to your advice on resetting the preffs i investigated and found out that my crashes were because of the "Display Markings in Layer Bars" variable for the cache markings which i had set to 01 earlier. Now i set it back to 00 and no more crashes. Its in the "Adobe After Effects 18.2 Prefs.txt" file

Mylenium

Legend

You pretty much answered your own question: Order of execution matters and your code does neither branch nor does it have any checks for whether collections exist and are valid and if stuff already has been created. You will of course need a bit more work rather than just blindly firing three lines of code. Add an if...else... or try...catch... or refer to the scripting guide on how to check and manipulate the various internal collections to create safe code.

Mylenium

L

lukask45223095Author

Participant

nor does it have any checks for whether collections exist

You pretty much answered your own question: Order of execution matters and your code does neither branch nor does it have any checks for whether collections exist and are valid and if stuff already has been created. You will of course need a bit more work rather than just blindly firing three lines of code. Add an if...else... or try...catch... or refer to the scripting guide on how to check and manipulate the various internal collections to create safe code.

Mylenium

By @Mylenium

These lines are of course a simplified excerpt of a larger script to illustrate the problem.

The Problem is not with the script, i am merely trying to illustrate the Problem.

Run this line:

var newCamera = myComp.layers.addCamera('020_030_', [0, 5.6]);

on any comp you want, then open the comp. AE will crash in the current version.

It's as simple as that.

If the script would error, i would understand, but that's not the case. This line makes the comp unopenable.

I just checked on AE 17.7.0 and the Problem does not exist.

This makes a big part of your production pipeline simply unusable.

Dan Ebberts

Community Expert

I just tried your code on 18.2.1 (Windows) and it works fine for me (no crash).

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