fix qsv audio sync (#2542)

* fix qsv audio sync

* cast a wider net

* always reset qsv pts

CHANGELOG.md

@@ -35,6 +35,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix HLS Segmenter (fmp4) on Windows
 - Playback troubleshooting: wait for at least 2 initial segments (up to configured initial segment count) to reduce stalls
 - Fix Trakt List sync
+- Fix QSV audio sync
 
 ### Changed
 - Do not use graphics engine for single, permanent watermark

ErsatzTV.FFmpeg/Filter/Qsv/QsvResetPtsFilter.cs

@@ -0,0 +1,8 @@
+namespace ErsatzTV.FFmpeg.Filter.Qsv;
+
+public class QsvResetPtsFilter : BaseFilter
+{
+    public override string Filter => "setpts=PTS-STARTPTS";
+
+    public override FrameState NextState(FrameState currentState) => currentState;
+}

ErsatzTV.FFmpeg/Pipeline/QsvPipelineBuilder.cs

@@ -91,12 +91,6 @@ public class QsvPipelineBuilder : SoftwarePipelineBuilder
             decodeCapability = FFmpegCapability.Software;
         }
 
-        // QSV cannot always decode properly when seeking, so use software
-        if (decodeCapability == FFmpegCapability.Hardware && ffmpegState.Start.Filter(s => s > TimeSpan.Zero).IsSome)
-        {
-            decodeCapability = FFmpegCapability.Software;
-        }
-
         // give a bogus value so no cuda devices are visible to ffmpeg
         pipelineSteps.Add(new CudaVisibleDevicesVariable("999"));
 
@@ -176,6 +170,8 @@ public class QsvPipelineBuilder : SoftwarePipelineBuilder
             currentState = decoder.NextState(currentState);
         }
 
+        videoInputFile.FilterSteps.Add(new QsvResetPtsFilter());
+
         // easier to use nv12 for overlay
         if (context.HasSubtitleOverlay || context.HasWatermark || context.HasGraphicsEngine)
         {