Normalize invalid PTS from containers for Trickplay generation

This change does not affect the keyframe only mode.

Signed-off-by: nyanmisaka <nst799610810@gmail.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
index 66bf6ebd24..f8a9e98e7a 100644
--- a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
@@ -926,6 +926,25 @@ namespace MediaBrowser.MediaEncoding.Encoder
                 throw new InvalidOperationException("EncodingHelper returned empty or invalid filter parameters.");
             }
 
+            // Normalize invalid PTS from containers for non keyframe only mode
+            if (!enableKeyFrameOnlyExtraction)
+            {
+                var fpsFilterIndex = filterParam.IndexOf("fps=", StringComparison.Ordinal);
+                if (fpsFilterIndex >= 0)
+                {
+                    var inputFrameRate = (imageStream.ReferenceFrameRate.HasValue && imageStream.ReferenceFrameRate > 0)
+                        ? imageStream.ReferenceFrameRate.Value : 30;
+
+                    var setPtsFilter = string.Create(CultureInfo.InvariantCulture, $"setpts=N/{inputFrameRate:F3}/TB,");
+
+                    filterParam = filterParam.Insert(fpsFilterIndex, setPtsFilter);
+                }
+                else
+                {
+                    throw new InvalidOperationException("EncodingHelper returned invalid filter parameters.");
+                }
+            }
+
             try
             {
                 return await ExtractVideoImagesOnIntervalInternal(