SOLVED: Meaning of "Current HLS implementation doesn't support non-keyframe breaks..."

[TheDreadPirate]

That message appears only once in the Jellyfin server code with this comment.

Code:

// FIXME: this is actually a workaround, as ideally it really should be the client which decides whether non-keyframe
//        breakpoints are supported; but current implementation always uses "ffmpeg input seeking" which is liable
//        to produce a missing part of video stream before first keyframe is encountered, which may lead to
//        awkward cases like a few starting HLS segments having no video whatsoever, which breaks hls.js

The code comment indicates it is a workaround to prevent something else from breaking.

It can be safely ignored.