feat: add Plex-style adaptive transcoding with bitrate limits and hardware fallback

server/routes/probe.js

@@ -87,6 +87,22 @@ function analyzeProbeResult(probeResult, url) {
     const videoCodec = videoStream?.codec_name?.toLowerCase() || 'unknown';
     const audioCodec = audioStream?.codec_name?.toLowerCase() || 'unknown';
     const container = format.format_name?.toLowerCase() || 'unknown';
+    const toPositiveNumber = (value) => {
+        const parsed = Number(value);
+        return Number.isFinite(parsed) && parsed > 0 ? parsed : null;
+    };
+    const toKbps = (value) => {
+        const bitrate = toPositiveNumber(value);
+        return bitrate === null ? null : Math.round(bitrate / 1000);
+    };
+    const durationSeconds = toPositiveNumber(format.duration) ?? toPositiveNumber(videoStream?.duration) ?? toPositiveNumber(audioStream?.duration);
+    const videoBitrateKbps = toKbps(videoStream?.bit_rate);
+    const audioBitrateKbps = toKbps(audioStream?.bit_rate);
+    const overallBitrateKbps = toKbps(format.bit_rate);
+    const probeConfidence = durationSeconds !== null && videoBitrateKbps !== null &&
+        (!audioStream || audioBitrateKbps !== null) && overallBitrateKbps !== null
+        ? 'complete'
+        : 'partial';
 
     // Check codec compatibility
     const videoOk = BROWSER_VIDEO_CODECS.some(c => videoCodec.includes(c));
@@ -131,6 +147,11 @@ function analyzeProbeResult(probeResult, url) {
         width: videoStream?.width || 0,
         height: videoStream?.height || 0,
         audioChannels: audioStream?.channels || 0, // For Smart Audio Copy
+        durationSeconds,
+        videoBitrateKbps,
+        audioBitrateKbps,
+        overallBitrateKbps,
+        probeConfidence,
         container: container,
         compatible: compatible,
         needsRemux: needsRemux,
@@ -157,7 +178,12 @@ router.get('/', async (req, res) => {
             container: 'unknown',
             compatible: false,
             needsRemux: false,
-            needsTranscode: true
+            needsTranscode: true,
+            durationSeconds: null,
+            videoBitrateKbps: null,
+            audioBitrateKbps: null,
+            overallBitrateKbps: null,
+            probeConfidence: 'partial'
         });
     }
 
@@ -193,6 +219,11 @@ router.get('/', async (req, res) => {
             compatible: false,
             needsRemux: false,
             needsTranscode: true,
+            durationSeconds: null,
+            videoBitrateKbps: null,
+            audioBitrateKbps: null,
+            overallBitrateKbps: null,
+            probeConfidence: 'partial',
             error: err.message
         });
     }