From an existing answer on another thread: Huffman1132 Q (Jan 17, 2020), answer by kslksl (Feb 18, 2020), hopefully linked correctly...

Jabber for your cell phone can be downloaded from the Google Play store or Apple App store. Download Jabber for MAC computer; Download Jabber for PC computer; Freely-Available Software Adobe Acrobat Reader. Pre-installed on HLS-owned computers. Note: Adobe Acrobat Reader is also available to students. A link to download the program is located.

'I just finally figured this out as I was facing the same issue and movies downloaded on our mac computer would not play on our Apple TV.

I went to TV app > Preferences > Playback and made sure both 'Download Multichannel Audio' and 'Download HDR when available' were unchecked. When I restarted the movie download it came down as an m4v file.'

Hls Player

I tried this on my Mac and it worked to switch download from movpkg (pre-change) to m4v (post-change). My issue, if anyone has an answer, is how to do this setting on an iPhone or iPad, which are also downloading movpkg. I use my iPhone to download from out-of-home download locations and then copying movies back to my Mac at home. Until I can get my iPhone or iPad to download m4v files, this route to get around my (ex-urban) limited at-home internet is problematic. I tried various settings, and none have worked.

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