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feat(playback): improve browser-player diagnostics (#939)

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* feat(playback): diagnose browser stream access errors
Entire-Checkpoint: f957cd9849e0

* feat(playback): expose browser-player diagnostic details
Entire-Checkpoint: f957cd9849e0

* fix(playback): keep media path extensions authoritative
Entire-Checkpoint: f957cd9849e0

* fix(playback): tighten browser access diagnostics
Entire-Checkpoint: f957cd9849e0

* fix(playback): align diagnostic followups
Entire-Checkpoint: f957cd9849e0

* fix(playback): narrow declared stream metadata
Entire-Checkpoint: f957cd9849e0

* fix(playback): preserve explicit extension overrides
Entire-Checkpoint: f957cd9849e0

* fix(playback): keep mpeg-ts out of unsupported containers
Entire-Checkpoint: f957cd9849e0

* refactor(playback): split diagnostics utilities
Entire-Checkpoint: f957cd9849e0

* fix(playback): treat mpegts early eof as media fallback
Entire-Checkpoint: f957cd9849e0
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4gray authored and GitHub committed 2026-05-15 00:55:23 +02:00
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commit 4a4334cb64
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+1936 -842
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docs/architecture/embedded-inline-playback.md
+9
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@@ -153,9 +153,18 @@ Supported diagnostic codes are:
- `unsupported-codec`
- `media-decode-error`
- `network-error`
- `browser-access-error`
- `drm-or-encryption`
- `unknown-playback-error`
`network-error` is reserved for provider/network loading failures. Browser security failures such as CORS, mixed content, Content Security Policy, and private-network-access blocks are classified as `browser-access-error` so the UI can explain that the browser player was blocked before playback reached decoding.
mpegts.js `Early-EOF` failures on MPEG-TS streams are classified as `media-decode-error` instead of generic `network-error`. These failures usually mean the fetch stream ended before mpegts.js expected a complete transport stream, and external players may still handle the same URL more tolerant of short reads or malformed TS boundaries.
The banner keeps the primary message compact, then exposes technical details on demand: diagnostic code, reporting player/source, detected container/MIME, video/audio codecs, native browser error fields, and raw HLS/mpegts details. HLS manifest codec metadata also drives a concise browser-support hint for codecs that Chromium/Electron commonly cannot decode inline, such as HEVC, AC-3, E-AC-3, DTS, and MPEG-2 video.
URL extension metadata is filtered before diagnostics and player selection use it. Web script extensions such as `.php` are not shown as stream containers; explicit media query metadata such as `extension=ts` or `format=m3u8` is preferred when present.
When a diagnostic is actionable in Electron, the inline banner may offer `Open in MPV`, `Open in VLC`, and `Copy URL`. Web builds only expose copy/help text. MPV/VLC fallback requests carry the original `ResolvedPortalPlayback` payload so headers, referer, origin, user-agent, content metadata, and resume offset stay intact.
`PortalPlayer.openExternalPlayback(playback, player)` is the forced external launch API. It sends the playback payload to MPV or VLC regardless of the current saved player setting, so fallback buttons do not mutate preferences.