fix empty transcode segments, widen device profile

src/lib/device-profile.ts

@@ -88,11 +88,13 @@ export function browserDeviceProfile(audioPassthrough = false) {
 
     DirectPlayProfiles: [
       {
-        Container: 'mp4,m4v',
+        // MSE / hls.js can remux these on the fly - no need to force a
+        // server-side transcode just because the container isn't mp4.
+        Container: 'mp4,m4v,mkv,avi,mov,wmv,ts,mpeg,mpegts',
         Type: 'Video',
         VideoCodec: videoCodecsCsv,
         AudioCodec: audioPassthrough
-          ? 'aac,mp3,ac3,eac3,flac,opus,truehd,dts'
+          ? 'aac,mp3,ac3,eac3,flac,opus,truehd,dts,alac,wmapro'
           : 'aac,mp3,ac3,eac3,flac,opus',
       },
       {

src/pages/PlayerPage.tsx

@@ -1091,10 +1091,28 @@ export default function PlayerPage() {
                       hls.startLoad()
                       break
                     case HLS.ErrorTypes.MEDIA_ERROR:
-                      hls.recoverMediaError()
+                      // fragParsingError ("Found no media") means the
+                      // transcoder returned an empty segment - usually a
+                      // cold-start race. Give it a second and retry from
+                      // the current position before doing the heavy
+                      // recoverMediaError reset (which causes a visible skip).
+                      if (data.details === 'fragParsingError') {
+                        const pos = hls.media?.currentTime
+                        setTimeout(() => {
+                          if (hls.destroyed) return
+                          try {
+                            hls.loadSource(hls.url)
+                            if (pos != null && hls.media) {
+                              hls.media.currentTime = pos
+                            }
+                            hls.startLoad()
+                          } catch { hls.recoverMediaError() }
+                        }, 1000)
+                      } else {
+                        hls.recoverMediaError()
+                      }
                       break
                     default:
-                      // Unrecoverable - destroy and let the user retry
                       hls.destroy()
                       break
                   }