diff --git a/FFMpegCore/FFProbe/MediaAnalysis.cs b/FFMpegCore/FFProbe/MediaAnalysis.cs
index 4345016..8f02a4f 100644
--- a/FFMpegCore/FFProbe/MediaAnalysis.cs
+++ b/FFMpegCore/FFProbe/MediaAnalysis.cs
@@ -22,7 +22,7 @@ private MediaFormat ParseFormat(Format analysisFormat)
         {
             return new MediaFormat
             {
-                Duration = TimeSpan.Parse(analysisFormat.Duration),
+                Duration = TimeSpan.Parse(analysisFormat.Duration ?? "0"),
                 FormatName = analysisFormat.FormatName,
                 FormatLongName = analysisFormat.FormatLongName,
                 StreamCount = analysisFormat.NbStreams,