Dubbing: Merge more words if in small duration. v5.15.17

DEVELOPER.md

@@ -1250,6 +1250,7 @@ The following are the update records for the Oryx server.
     * Support Go PPROF for CPU profiling. [v5.15.15](https://github.com/ossrs/oryx/releases/tag/v5.15.15)
     * VLive: Support download by youtube-dl. v5.15.16
     * Dubbing: Use gpt-4o and smaller ASR segment. v5.15.17
+    * Dubbing: Merge more words if in small duration. v5.15.17
 * v5.14:
     * Merge features and bugfix from releases. v5.14.1
     * Dubbing: Support VoD dubbing for multiple languages. [v5.14.2](https://github.com/ossrs/oryx/releases/tag/v5.14.2)

platform/dubbing.go

@@ -32,6 +32,9 @@ var aiDubbingWorkDir = "containers/data/dubbing"
 // MergeSegmentBetweenGroups is used for detect the gap for automatically merging.
 const MergeSegmentBetweenGroups = 10 * time.Millisecond
 
+// MergeSegmentForSmallWords is used for merging the group if less than this words.
+const MergeSegmentForSmallWords = 30
+
 // For production, all should be false.
 const (
 	alwaysForceRegenerateASRResponse = false
@@ -1904,9 +1907,9 @@ func (v *SrsDubbingTask) Start(ctx context.Context) error {
 
 				// Whether the next segment is very few words.
 				if isEnglish(nextText) {
-					nextFewWords = strings.Count(nextText, " ") < 5
+					nextFewWords = strings.Count(nextText, " ") < MergeSegmentForSmallWords
 				} else {
-					nextFewWords = utf8.RuneCount([]byte(nextText)) < 5
+					nextFewWords = utf8.RuneCount([]byte(nextText)) < MergeSegmentForSmallWords
 				}
 			}