Uncap maximum streams (#1149)

Author: ScrubN

TwitchDownloaderCore/VideoDownloader.cs

@@ -340,6 +340,7 @@ private async Task<int> RunFfmpegVideoCopy(string tempFolder, FileInfo outputFil
                 "-analyzeduration", $"{int.MaxValue}",
                 "-probesize", $"{int.MaxValue}",
                 "-f", "concat",
+                "-max_streams", $"{int.MaxValue}",
                 "-i", concatListPath,
                 "-i", metadataPath,
                 "-map_metadata", "1",