to consider stabilization delay.

shogo4405 · Nov 8, 2024 · 1986357 · 1986357
1 parent 7a737c2
commit 1986357
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/Sources/IO/IOVideoMixer.swift b/Sources/IO/IOVideoMixer.swift
@@ -31,6 +31,7 @@ final class IOVideoMixer<T: IOVideoMixerDelegate> {
     private(set) var inputFormats: [UInt8: CMFormatDescription] = [:]
     private var currentPixelBuffer: CVPixelBuffer?
     private var videoTrackScreenObject = VideoTrackScreenObject()
+    private var hostTimeClock = CMClockGetHostTimeClock()
 
     func append(_ track: UInt8, sampleBuffer: CMSampleBuffer) {
         inputFormats[track] = sampleBuffer.formatDescription
@@ -41,6 +42,10 @@ final class IOVideoMixer<T: IOVideoMixerDelegate> {
             for screen in screens where screen.track == track {
                 screen.enqueue(sampleBuffer)
             }
+            if settings.mainTrack == track {
+                let diff = hostTimeClock.time - sampleBuffer.presentationTimeStamp
+                screen.delayTime = diff.seconds - (1.0 / 120.0)
+            }
         case .passthrough:
             if settings.mainTrack == track {
                 outputSampleBuffer(sampleBuffer)