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-rw-r--r--packages/meshbay-common/src/meshbay_common/protocol.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/packages/meshbay-common/src/meshbay_common/protocol.py b/packages/meshbay-common/src/meshbay_common/protocol.py
index 8ad36e6..c3cb099 100644
--- a/packages/meshbay-common/src/meshbay_common/protocol.py
+++ b/packages/meshbay-common/src/meshbay_common/protocol.py
@@ -191,6 +191,13 @@ class MNP:
# TMDB poster or a MusicBrainz cover.
AUDIO_TRANSCODE_REQ = "audio_transcode_req" # client → node: transcode this file id
AUDIO_TRANSCODE_RESP = "audio_transcode_resp" # node → client: cache hash/size/mime
+ # One embedded subtitle track, extracted whole-file to WebVTT and cached
+ # under its own hash — same shape as the audio transcode above, and for
+ # the same reason: the result is small, identical every time, and MSE
+ # cannot decode an in-band text track, so it has to travel beside the
+ # stream rather than inside it. Whole-file, so a seek re-extracts nothing.
+ SUBTITLE_REQ = "subtitle_req" # client → node: file id + track ordinal
+ SUBTITLE_RESP = "subtitle_resp" # node → client: cache hash/size/mime
# Device linking. A new device files a request bound to a code it displays;
# an already-pinned device of the same account approves it. Neither the hub
# nor the node can produce the countersignature.