diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index eb6497ef1a..f1803ee40d 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -387,8 +387,8 @@ public static class StreamingHelpers
         // Check if this is a progressive download (no segments) vs HLS streaming
         var streamingRequest = state.BaseRequest as StreamingRequestDto;
 
-        // Progressive download: no segment container means it's a full file download (not HLS)
-        if (streamingRequest?.SegmentContainer is null)
+        // Progressive download: full file download with no HLS segmentation
+        if (streamingRequest?.SegmentContainer is null && state.TranscodingType == TranscodingJobType.Progressive)
         {
             // Progressive download - use disk-based transcode path
             var diskTranscodePath = Path.Combine(folder, "downloads");
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index c676a9ef56..b6a00856bc 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -7504,9 +7504,9 @@ namespace MediaBrowser.Controller.MediaEncoding
             var inputModifier = GetInputModifier(state, encodingOptions, null);
 
             // Add timestamp normalization for progressive downloads
-            // Always normalize timestamps when not copying them - fixes seeking in mpv/iina/infuse
+            // Fixes seeking issues in strict players like mpv, iina, and infuse
             var timestampArgs = string.Empty;
-            if (!state.BaseRequest.CopyTimestamps)
+            if (state.TranscodingType == TranscodingJobType.Progressive && !state.BaseRequest.CopyTimestamps)
             {
                 timestampArgs = " -avoid_negative_ts make_zero -start_at_zero";
             }