Add note for peertube runner dependencies

diff --git a/support/doc/tools.md b/support/doc/tools.md
index b2fb7cd2ceb5b8597e196d83340dc25cde09b9a4..0c08cd2006c6ebad60beddfd1111f247ccb3126c 100644 (file)
--- a/support/doc/tools.md
+++ b/support/doc/tools.md
@@ -386,6 +386,15 @@ PeerTube >= 5.2 supports VOD or Live transcoding by a remote PeerTube runner.
 
 ### Installation
 
+Ensure you have `ffmpeg` and `ffprobe` installed on your system:
+
+```bash
+ffprobe -version # Should be >= 4.3
+ffmpeg -version # Should be >= 4.3
+```
+
+Then install the CLI:
+
 ```bash
 sudo npm install -g @peertube/peertube-runner
 ```