Add perf tradeoff mode to image extractor (#12744)

1 files changed, 8 insertions, 1 deletions

diff --git a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
index 7ae1fbbb1..ace8bda19 100644
--- a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
@@ -650,6 +650,8 @@ namespace MediaBrowser.MediaEncoding.Encoder
         {
             ArgumentException.ThrowIfNullOrEmpty(inputPath);
 
+            var useTradeoff = _config.GetFFmpegImgExtractPerfTradeoff();
+
             var outputExtension = targetFormat?.GetExtension() ?? ".jpg";
 
             var tempExtractPath = Path.Combine(_configurationManager.ApplicationPaths.TempDirectory, Guid.NewGuid() + outputExtension);
@@ -684,7 +686,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
 
             // Use ffmpeg to sample 100 (we can drop this if required using thumbnail=50 for 50 frames) frames and pick the best thumbnail. Have a fall back just in case.
             // mpegts need larger batch size otherwise the corrupted thumbnail will be created. Larger batch size will lower the processing speed.
-            var enableThumbnail = useIFrame && !string.Equals("wtv", container, StringComparison.OrdinalIgnoreCase);
+            var enableThumbnail = !useTradeoff && useIFrame && !string.Equals("wtv", container, StringComparison.OrdinalIgnoreCase);
             if (enableThumbnail)
             {
                 var useLargerBatchSize = string.Equals("mpegts", container, StringComparison.OrdinalIgnoreCase);
@@ -718,6 +720,11 @@ namespace MediaBrowser.MediaEncoding.Encoder
                 args = string.Format(CultureInfo.InvariantCulture, "-ss {0} ", GetTimeParameter(offset.Value)) + args;
             }
 
+            if (useIFrame && useTradeoff)
+            {
+                args = "-skip_frame nokey " + args;
+            }
+
             if (!string.IsNullOrWhiteSpace(container))
             {
                 var inputFormat = EncodingHelper.GetInputFormat(container);