Bug 240549
| Summary: | Duplicated cues of in-manifest captions, if cue properties modified | ||
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| Product: | WebKit | Reporter: | Gary Katsevman <webkit> |
| Component: | Media | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | eric.carlson, jer.noble, webkit-bug-importer |
| Priority: | P2 | Keywords: | InRadar |
| Version: | Safari Technology Preview | ||
| Hardware: | All | ||
| OS: | All | ||
Gary Katsevman
If, when, playing back an HLS stream with in-manifest captions, a cue's properties are modified, when seeking back and replaying the video so that the cue becomes active again, the cue becomes duplicated.
Modifying any property of the cue will cause a new cue to be re-added with the original values and both of them to be displayed.
I have a live example here https://simple-video.netlify.app/double-cues.html
It waits for some cues to be available, modifies their `line` properties to be `0` and then seeks back. On the second play, there are now cues at the top and the bottom of the display area.
To me, this seems a bit unexpected that a new cue is created even though the original reference still exists, even if it was modified.
I'd expect no new cues to be created.
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Radar WebKit Bug Importer
<rdar://problem/93624739>