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-rw-r--r--doc/filters.texi3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index 52971c76e9..fbc3f83897 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2112,6 +2112,9 @@ wallclock (RTC) time in microseconds
@item RTCSTART
wallclock (RTC) time at the start of the movie in microseconds
+@item TB
+timebase of the input timestamps
+
@end table
Some examples follow: