Add option to extract keyframe only during trickplay image generation

This would be significantly faster than decoding every frame, but it does have compatibility issues. Not all decoders support this mode, notably the VP9 decoder, CUVID decoders, and QSV decoders.

Some videos with very long key-frame intervals may also perform poorly with this mode, as the image timing could become too inaccurate to reflect the actual frame.

Signed-off-by: gnattu <gnattuoc@me.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/MediaBrowser.Model/Configuration/TrickplayOptions.cs b/MediaBrowser.Model/Configuration/TrickplayOptions.cs
index a151d3429..578bb306a 100644
--- a/MediaBrowser.Model/Configuration/TrickplayOptions.cs
+++ b/MediaBrowser.Model/Configuration/TrickplayOptions.cs
@@ -19,6 +19,12 @@ public class TrickplayOptions
     public bool EnableHwEncoding { get; set; } = false;
 
     /// <summary>
+    /// Gets or sets a value indicating whether to only extract key frames.
+    /// Significantly faster, but is not compatible with all decoders and/or video files.
+    /// </summary>
+    public bool EnableKeyFrameOnlyExtraction { get; set; } = false;
+
+    /// <summary>
     /// Gets or sets the behavior used by trickplay provider on library scan/update.
     /// </summary>
     public TrickplayScanBehavior ScanBehavior { get; set; } = TrickplayScanBehavior.NonBlocking;