Actually the Windows Media Player can play .HEIVC files after the installation of the HEVC plugin which is available through the Store.
Let us assume your videos that you can't play back are in the .HEVC (.HEIF for images) format, which are not natively supported in Windows. Therefore, VLC should be able to playback those files. Is it up to date?
To further address your issue, we need more info:
file format of the videos that don't and do playback?
Do they play on a different machine?
You can play any video as a Desktop wallpaper using VLC from the command line if you pass the option --video-wallpaper to the VLC executable. This will play the video behind your Desktop files. The VLC executable is located at /Applications/VLC.app/Contents/MacOS/VLC. I have that aliased to vlc, using:
I checked on iOS 12.4, YouTube kids app, there's no feature for autoplay settings. It is "on", on web and on app. Alternatively, I am not very experienced in user scripts, but can suggest a potential, easy algorithm.
When the current video time = (total video time - 1) seconds, pause video.
I have no idea how to write it, but you can get help from sites ...
For iMovie 10 and above:
Drag and drop the clips that you want to show at the same time to the timeline and make sure one is above another in the timeline.
Click the Video Overlay Settings icon above the Viewer window and then select Split Screen option from the drop-down box.
In the absence of iTunes app in macOS Catalina, you can sync content to your iPhone using the Finder app.
The iOS device sync and backup functionality that used to be available within iTunes app in earlier versions of macOS are now available via Finder app.
For instructions, refer to this Apple support document:
Use the Finder to sync your iPhone, iPad, ...
The best file storage tool is the native tool, so just put your files in folders in the files app on ios13.
There’s no need for a player unless your videos use non-standard codec, and then start with VLC or a different player if you have such a large library that getting things encoded isn’t worth the time. Don’t ...