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-rw-r--r--DOCS/man/options.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst
index e786b8405d..0680c2b6e5 100644
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -5646,6 +5646,8 @@ Miscellaneous
both tracks need to have the same width, or filter initialization
will fail (you can add ``scale`` filters before the ``vstack`` filter
to fix the size).
+ To load a video track from another file, you can use
+ ``--external-file=other.mkv``.
- ``--lavfi-complex='[aid1] asplit [t1] [ao] ; [t1] showvolume [t2] ; [vid1] [t2] overlay [vo]'``
Play audio track 1, and overlay the measured volume for each speaker
over video track 1.