doc/filters: correct libvmaf example

AVTB is 1/AV_TIME_BASE

diff --git a/doc/filters.texi b/doc/filters.texi
index 22d4f9d9a88c679152ecdec9f98a4da5b5eaddbf..6f26aeddc0c609ec5e64718f143d311f642a1cad 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -12448,7 +12448,7 @@ ffmpeg -i main.mpg -i ref.mpg -lavfi libvmaf="psnr=1:log_fmt=json" -f null -
 @item
 Example with options and different containers:
 @example
-ffmpeg -i main.mpg -i ref.mkv -lavfi "[0:v]settb=1/AVTB,setpts=PTS-STARTPTS[main];[1:v]settb=1/AVTB,setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=psnr=1:log_fmt=json" -f null -
+ffmpeg -i main.mpg -i ref.mkv -lavfi "[0:v]settb=AVTB,setpts=PTS-STARTPTS[main];[1:v]settb=AVTB,setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=psnr=1:log_fmt=json" -f null -
 @end example
 @end itemize