On Sun Jan 15, 2023 at 10:49 PM CET, Pablo Rodriguez via ntg-context wrote:
Dear list,
I’m planning to add an explanation about multimedia inclusion to the wiki, but first I wanted to discuss an issue I have found.
I have the following sample (adapted from scrn-wid.mklx):
\setupinteraction[state=start] \starttext \null\page \definerenderingwindow[myrenderingwindow] [width=\textwidth, height=\textwidth, %openpageaction=StartCurrentRendering, %closepageaction=StopCurrentRendering, openpageaction=StartRendering{\currentrendering}, closepageaction=StopRendering{\currentrendering}, framecolor=red] \startTEXpage[offset=1em, pagestate=start] \userendering[key-name][video/mp4][video.mp4] [embed=yes, auto, ] \placerenderingwindow[myrenderingwindow][key-name] \stopTEXpage \null\page \stoptext
\userendering[][][auto] would enable automatic play or stop when the page with the rendering is reached or left (respectively).
I cannot get it working. Neither do work the commented lines in \definerenderingwindow.
Inspecting the PDF code, the screen annotation only gets an additional actions dictionary (https://opensource.adobe.com/dc-acrobat-sdk-docs/standards/pdfstandards/pdf/...) with /PO and /PC entries, when open and close page actions are set to StartRendering{\currentrendering} and StopRendering{\currentrendering}.
Just for reference, this is the screen annotation object with the additional actions dictionary:
13 0 obj << /Type /Annot /A << /AN 13 0 R /OP 0 /R 12 0 R /S /Rendition >> /AA << /PC << /AN 13 0 R /OP 1 /R 12 0 R /S /Rendition >> /PO << /AN 13 0 R /OP 0 /R 12 0 R /S /Rendition >> >> /Border [ 0 0 0 ] /P 14 0 R /Subtype /Screen /T <FEFF006B00650079002D006E0061006D0065> /Rect [ 12.353668 12.353668 437.54664 437.54664 ]
endobj
And this is what I get with \userendering[][][auto]:
13 0 obj << /Type /Annot /A << /AN 13 0 R /OP 0 /R 12 0 R /S /Rendition >> /Border [ 0 0 0 ] /P 14 0 R /Subtype /Screen /T <FEFF006B00650079002D006E0061006D0065> /Rect [ 12.353668 12.353668 437.54664 437.54664 ]
endobj
Could anyone be so kind to confirm the issue?
AFAICT I based the auto option on the "Start/StopCurrentRendering" actions (2021-09-14) which we later agreed to remove (2021-09-17), so there was a bug. Reasoning for removal of the "Current" variants at the time: On Tue Sep 14, 2021 at 9:37 PM CEST, Hans Hagen wrote:
Because \currentrendering is local we could as well drop the Current variants ... it's not like people will put hundreds of videos in a file so enforcing the named one makes sense.
So Start/StopRendering{label} should be used instead (Hans already redid most of the examples, you found the two places in scrn-wid.mklx where there is an incosistency. I would think that something like the attached could work. But in some cases it fails on the TeX side with something I am not sure about. I probably overlooked something. Anyways the idea is to just use the Start/StopRendering actions with the correct label. Michal