Revert "fix: pip video freeze"

This reverts commit 0473233775.

VoidLink/Stream/VideoDecoderRenderer.m

@@ -39,11 +39,10 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
 
 - (void)reinitializeDisplayLayer
 {
-    if (_displayLayer == nil) {
-        _displayLayer = [[AVSampleBufferDisplayLayer alloc] init];
-        _displayLayer.backgroundColor = [UIColor blackColor].CGColor;
-        [_view.layer addSublayer:_displayLayer];
-    }
+    CALayer *oldLayer = _displayLayer;
+    
+    _displayLayer = [[AVSampleBufferDisplayLayer alloc] init];
+    _displayLayer.backgroundColor = [UIColor blackColor].CGColor;
     
     // Ensure the AVSampleBufferDisplayLayer is sized to preserve the aspect ratio
     // of the video stream. We used to use AVLayerVideoGravityResizeAspect, but that
@@ -64,6 +63,14 @@ extern int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size,
     // can see the loading progress label as the stream is starting.
     _displayLayer.hidden = YES;
     
+    if (oldLayer != nil) {
+        // Switch out the old display layer with the new one
+        [_view.layer replaceSublayer:oldLayer with:_displayLayer];
+    }
+    else {
+        [_view.layer addSublayer:_displayLayer];
+    }
+    
     if (formatDesc != nil) {
         CFRelease(formatDesc);
         formatDesc = nil;