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feat(stream): on-demand frame thumbnails via /thumbnail (hueco medio)

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Add GET /thumbnail to the agent stream server: ffmpeg extracts one frame
at a timestamp (-ss before -i, single-frame MJPEG to stdout) for the web's
file-characteristics panel. Auth via a token scoped thumb:<sha256(path)>
(same HMAC scheme as /stream and /hls; the web mints, the agent verifies),
clamped to a real regular file, 404-no-oracle on a bad token, 20s timeout.
ffmpeg path wired into the stream server from the daemon. Version -> 0.13.0.
This commit is contained in:
Deivid Soto 2026-05-31 18:27:22 +02:00
parent 950cdb4efe
commit 2be92516c6
6 changed files with 329 additions and 2 deletions
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3
internal/cmd/daemon.go
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@ -310,6 +310,9 @@ func runDaemonStart() error {
// Create persistent stream server
streamSrv := engine.NewStreamServer(cfg.Download.StreamPort)
streamSrv.SetUPnPEnabled(cfg.Download.EnableUPnP)
// Wire ffmpeg so /thumbnail can extract single frames for the web's "file
// characteristics" panel (frames on demand). Empty = thumbnails 503.
streamSrv.SetFFmpegPath(ffmpegResolved)
streamSrv.SetRequireStreamToken(cfg.Download.RequireStreamToken)
// Report the stream-token signing key ONLY when enforcing, so the web's
// "secret present → mint HLS token" signal accurately means "this agent