fixes

ErsatzTV.FFmpeg/Capabilities/HardwareCapabilitiesFactory.cs

@@ -47,6 +47,7 @@ public partial class HardwareCapabilitiesFactory(
 
     public void ClearCache()
     {
+        memoryCache.Remove(FFmpegVersionKey);
         memoryCache.Remove(string.Format(CultureInfo.InvariantCulture, FFmpegCapabilitiesCacheKeyFormat, "hwaccels"));
         memoryCache.Remove(string.Format(CultureInfo.InvariantCulture, FFmpegCapabilitiesCacheKeyFormat, "decoders"));
         memoryCache.Remove(string.Format(CultureInfo.InvariantCulture, FFmpegCapabilitiesCacheKeyFormat, "filters"));

ErsatzTV.FFmpeg/Capabilities/NvidiaHardwareCapabilities.cs

@@ -60,8 +60,10 @@ public class NvidiaHardwareCapabilities(CudaDevice cudaDevice, IFFmpegCapabiliti
         // 10-bit h264 hardware decode is not supported until ffmpeg 8
         if (isHardware && videoFormat is VideoFormat.H264 && bitDepth == 10)
         {
-            if (!ffmpegCapabilities.Version.StartsWith("8.", StringComparison.OrdinalIgnoreCase) &&
-                !ffmpegCapabilities.Version.StartsWith("n8.", StringComparison.OrdinalIgnoreCase))
+            bool isVersion8OrNewer = int.TryParse(
+                ffmpegCapabilities.Version.Split('.')[0].TrimStart('n', 'N'),
+                out int major) && major >= 8;
+            if (!isVersion8OrNewer)
             {
                 isHardware = false;
             }

ErsatzTV.Infrastructure/Health/Checks/FFmpegVersionHealthCheck.cs

@@ -39,7 +39,7 @@ public class FFmpegVersionHealthCheck(
         {
             Option<string> maybeVersion =
                 await hardwareCapabilitiesFactory.GetFFmpegVersion(ffmpegPath.Value, cancellationToken);
-            if (maybeVersion.IsNone)
+            if (maybeVersion.IsNone || maybeVersion.Exists(string.IsNullOrWhiteSpace))
             {
                 return WarningResult("Unable to determine ffmpeg version", "Unable to determine ffmpeg version", link);
             }
@@ -57,7 +57,7 @@ public class FFmpegVersionHealthCheck(
         {
             Option<string> maybeVersion =
                 await hardwareCapabilitiesFactory.GetFFmpegVersion(ffprobePath.Value, cancellationToken);
-            if (maybeVersion.IsNone)
+            if (maybeVersion.IsNone || maybeVersion.Exists(string.IsNullOrWhiteSpace))
             {
                 return WarningResult(
                     "Unable to determine ffprobe version",