1diff --git a/src/streamlink/stream/ffmpegmux.py b/src/streamlink/stream/ffmpegmux.py
2index 258b314a..c493e010 100644
3--- a/src/streamlink/stream/ffmpegmux.py
4+++ b/src/streamlink/stream/ffmpegmux.py
5@@ -80,7 +80,7 @@ class MuxedStream(Stream, Generic[TSubstreams]):
6
7
8 class FFMPEGMuxer(StreamIO):
9- __commands__: ClassVar[List[str]] = ["ffmpeg"]
10+ __commands__: ClassVar[List[str]] = ["@ffmpeg@"]
11
12 DEFAULT_OUTPUT_FORMAT = "matroska"
13 DEFAULT_VIDEO_CODEC = "copy"