Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
@item avoid_negative_ts @var{integer} (@emph{output})
Shift timestamps to make them positive. 1 enables, 0 disables, default
of -1 enables when required by target format.
+When timestamps are shifted, all timestamps of a output file are shifted
+together by the same amount. AV sync, subtitle sync and relative timestamp
+differences are preserved compared to how they would have been without
+shifting.
@end table
@c man end FORMAT OPTIONS