feat: Phase 10c — MSE video streaming (real-time playback)

Replace download-then-play VideoPlayer with MSE (MediaSource Extensions)
streaming. Node remuxes to fMP4 via ffmpeg, probes codecs with ffprobe,
and sends encrypted segments over DataChannel. Browser decrypts and
appends to SourceBuffer — playback starts within seconds.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/style.css b/packages/meshbay-hub/src/meshbay_hub/static/style.css
index 542c672..faf8b0f 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/style.css
+++ b/packages/meshbay-hub/src/meshbay_hub/static/style.css
@@ -909,6 +909,31 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
   max-width: 400px;
 }
 
+.video-stream-bar {
+  position: absolute;
+  bottom: 60px;
+  left: 50%;
+  transform: translateX(-50%);
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  background: rgba(0, 0, 0, 0.6);
+  padding: 4px 12px;
+  border-radius: 12px;
+  z-index: 10;
+}
+
+.video-progress-bar.small {
+  width: 120px;
+  height: 4px;
+}
+
+.video-stream-label {
+  font-size: 0.7em;
+  color: rgba(255, 255, 255, 0.7);
+  white-space: nowrap;
+}
+
 .play-btn {
   background: none;
   border: 1px solid var(--border);