[Tex/LaTex] Change in Video embedding

beamergraphicspackagespdftextexstudio

I am trying to embed a video in a beamer presentation.
I must specify that the exemple below using media9 package was previously working.
It is not working anymore, and I don't understand why.
I am aware that many similar subjects were created, and from them, I managed to produce the working code linked below.

\documentclass[10pt]{beamer}
\usetheme{Frankfurt}

\usepackage{media9}

\begin{document}
\begin{frame}
    \frametitle{title}

    \includemedia[
    width=1\linewidth,height=0.3\linewidth,
    activate=pageopen,
    passcontext,
    addresource=NRCollisionalQuenchToh.mp4,
    flashvars={source=NRCollisionalQuenchToh.mp4
        %&autoplay=true
        %&loop=true
    }  %adjust
    ]{\fbox{Please work?}}{VPlayer.swf}
\end{frame}
\end{document}

Once again, this was working, but it's not the case anymore.

I am working on windows 10 using TexStudio as editor.
The miktek console is up-to-date, and I have the latest version of adobe acrobat reader DC (20.013.20064).

It is compiled without error, and adobe open the pdf.
Although, once on the slide, a small box appear to say its loading the video.
Once the box show "ready" nothing happen, and the video don't play.

Also, I am aware that it should be possible to embed video in beamer directly with the multimedia package.
I am totally fine with it, but I just never could get it to work.
I am also aware tht it is possible to have external links, and I know how to do it, but this is not what I am looking for.
Here is my code for that:

\documentclass[10pt]{beamer}
\usetheme{Frankfurt}

\usepackage{multimedia}

\begin{document}

\begin{frame}
    \frametitle{title}
    \movie[
    poster,
    showcontrols=true]
    {Embedded}{water.avi}\\
    \movie[externalviewer]{External link}{water.avi}
\end{frame}

\end{document}

I am open to any solutions for embedded videos in a latex beamer, whatever video format I should use.
I would prefer solutions using the media9 package, to be able to send the pdf to someone, whithout having to dend the video on the side, but at this point, I am fine with anything.

Thank you in advance for help.

Best Answer

Adobe will end its support for Flash by the end of December. Did you perhaps consent to stop using Flash in Acrobat Reader?

Although this can be undone in the settings, it might be possible that AR updates after the 31st December will ultimately disable Flash usage.

Video playback without Flash is possible in Acrobat Reader, but currently no control buttons are provided for user interaction.

Another answer proposes a command for embedding MP4 video without Flash, but it is subject to the limitation given in the previous sentence.

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