How to avoid network error during playback when posting videos

Quite often videos trigger an error and an overlay appears, stating a network error occured.
Longer videos might just stop after a while.

This seems to happen to videos that are not optimized for web playback/are made streamable.

How can you avoid this when posting your videos?

Download the video tool "Handbrake". Load your video and on the "Summary" tab, check "Web optimized", enter an output path and file name in the bottom line and hit "Start Encoding".
Upload the new output file instead of your original one and it should no longer trigger the network error message.

[Like Ra]

Or use +faststart option for ffmpeg.

The actual reason for the error is the MyBB attachment access control system. The video files are not linked directly, but streamed via a PHP process.

[Like Ra]

Fixed by adding Cloudflare cache: https://www.likera.com/forum/mybb/showth...p?tid=3929