mirror of https://github.com/mpv-player/mpv
manpage: mention how to get multiple video tracks for --lavfi-complex
See #5670.
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@ -5646,6 +5646,8 @@ Miscellaneous
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both tracks need to have the same width, or filter initialization
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will fail (you can add ``scale`` filters before the ``vstack`` filter
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to fix the size).
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To load a video track from another file, you can use
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``--external-file=other.mkv``.
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- ``--lavfi-complex='[aid1] asplit [t1] [ao] ; [t1] showvolume [t2] ; [vid1] [t2] overlay [vo]'``
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Play audio track 1, and overlay the measured volume for each speaker
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over video track 1.
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