Re: JavaScript in multimedia PDF

[Pablo Rodriguez via ntg-context <ntg-context@ntg.nl>]

On 8/8/21 11:00 PM, Michal Vlasák via ntg-context wrote:
> On Sun Aug 8, 2021 at 8:22 PM CEST, Pablo Rodriguez via ntg-context wrote:
>> I don’t know why I get the following message:
>>
>> TypeError: a.doc is undefined
>>
>> It seems to be caused by "app.media.openPlayer", but the code is copied
>> from the documentation Adobe released early this year.
>
> Is there a newer document than "JavaScript for Acrobat API Reference"
> (May 2015)?

Well, the link you provided
(https://mailman.ntg.nl/pipermail/ntg-context/2021/103023.html) is from
February 2021:

https://opensource.adobe.com/dc-acrobat-sdk-docs/acrobatsdk/pdfs/acrobatsdk_jsapiref.pdf

Here is the guide to developers (from the same date):

https://opensource.adobe.com/dc-acrobat-sdk-docs/acrobatsdk/pdfs/acrobatsdk_jsdevguide.pdf

> Anyways, I thought that the culprit is that you only specify the
> rendition (what to play) and not screen (where to play):
>
>
>      function GoToFirstSlide(label) {
>      this.pageNum = 0 ;
>      var rendition = this.media.getRendition(label) ;
>     +var screen = this.media.getAnnots({ nPage: 0})[0];
>      var player = app.media.openPlayer({
>          rendition: rendition,
>     +    annot: screen,
>        });
>      }
>
> But as it turns out, while the screen query succesfully returns an
> object, the rendition query returns null.
>
> The PDF 1.7 standard specifies that the name (/N) of Rendition PDF
> object should be Unicode, but that doesn't seem to make it work either,
> as does deleting the name of the media clip (which was the same).
>
> (But I now get "Invalid arguments" error for the "app.media.openPlayer"
> call, which is kind of expected.)
>
> Can you confirm, that "rendition" is null on your side as well?
>
>     console.println(rendition);
>     console.println(screen);
>     console.show();

I get exactly the same results: screen object, but null rendition.

I have no idea what it is needed here.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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