On 1/16/23 02:42, Michal Vlasák via ntg-context wrote:
> [...] 
> 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.

Hi Michal,

many thanks for your reply.

Your code fixes the "auto" option. At least with the following sample:

  \setupinteraction[state=start]
  \unexpanded\def\IncludeVideo[#1]
   {\definerenderingwindow[#1]
      [width=\textwidth, height=\textwidth,
      framecolor=red]
    \userendering[#1][video/mp4][#1]
      [embed=yes, auto]
    \placerenderingwindow[#1][#1]}
  \starttext
  \null\page
  \startTEXpage[offset=1em, pagestate=start]
    \IncludeVideo[video-1.mp4]
  \stopTEXpage
  \null\page
  \startTEXpage[offset=1em, pagestate=start]
    \IncludeVideo[video-2.mp4]
  \stopTEXpage
  \null\page
  \stoptext

I attach a diff and complete file with the the fix from today and the
addition of controls, volume, repeat and opacity you sent me some days
ago (already sent in
https://mailman.ntg.nl/pipermail/dev-context/2022/003957.html).

Just in case Hans may review your code and merge into ConTeXt.

Many thanks for your help,

Pablo