fcpxml Distort value

hi,

I'm exporting fcpxml from Adobe Premiere and editing it in an AIR app - specifically a CS extension - after which I import back the edited project into Premiere.

Mainly I try to replace clips that are on the timeline with other clips in the browser based on a string id that it is part of their name and pathurl.

I'm able to replace the file node which contains data like name, pathurl, widht, height and pixelaspectratio. I also replace name and pixelaspectratio values in the parent clipitem node.

Here is my problem:
If a user keeps the sequence settings when adding a clip to the timeline, a value is being set in a Distort filter.
When I replace the original data with data from the new clip, I don't know what the new Distort value should be. The Distort filter node looks smt like this:

<filter
><effect
><name
>Distort</name
><effectid
>deformation</effectid
><effectcategory
>motion</effectcategory
><effecttype
>motion</effecttype
><mediatype
>video</mediatype
><parameter
authoringApp="PremierePro"
><parameterid
>aspect</parameterid
><name
>Aspect</name
><valuemin
>-10000</valuemin
><valuemax
>10000</valuemax
><value
>-21.875</value THIS ONE
></parameter
></effect
></filter
>

Is there any way to find out what that value should be, based on sequence settings, and the aspect ratio, width and height of the new clip?

thanks,
Jeff.

PPro doesn't export FCPXML, only FCP X does (and Logic Pro X, and Resolve). PPro exports/imports an older version of XML that is semi-compatible with FCP 7 and earlier. You need to post in a PPro forum, I'd guess.