From 1372c557866ad4f1406a42033ab859fae6f909a0 Mon Sep 17 00:00:00 2001 From: Rodger Combs Date: Tue, 21 Oct 2014 01:23:55 -0500 Subject: [PATCH] doc/ffmpeg.texi: document the new -start_at_zero option Signed-off-by: Michael Niedermayer --- doc/ffmpeg.texi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 4fc76820e1..38dca8672f 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -1016,6 +1016,12 @@ processing (e.g. in case the format option @option{avoid_negative_ts} is enabled) the output timestamps may mismatch with the input timestamps even when this option is selected. +@item -start_at_zero +When used with @option{copyts}, shift input timestamps so they start at zero. + +This means that using e.g. @code{-ss 50} will make output timestamps start at +50 seconds, regardless of what timestamp the input file started at. + @item -copytb @var{mode} Specify how to set the encoder timebase when stream copying. @var{mode} is an integer numeric value, and can assume one of the following values: