[FFmpeg-devel] [PATCH] doc/formats: reword documentation for avoid_negative_ts
Stefano Sabatini
stefasab at gmail.com
Mon Mar 18 23:57:06 CET 2013
Hopefully increase readability.
---
doc/ffmpeg-formats.texi | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/doc/ffmpeg-formats.texi b/doc/ffmpeg-formats.texi
index 0e972a8..95725e3 100644
--- a/doc/ffmpeg-formats.texi
+++ b/doc/ffmpeg-formats.texi
@@ -140,12 +140,15 @@ Consider things that a sane encoder should not do as an error.
Use wallclock as timestamps.
@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.
+Shift timestamps to make them positive. A value of 1 enables shifting,
+a value of 0 disables it, the default value of -1 enables shifting
+when required by the target format.
+
+When shifting is enabled, all output timestamps are shifted by the
+same amount. Audio, video, and subtitles desynching and relative
+timestamp differences are preserved compared to how they would have
+been without shifting.
+
When avoid_negative_ts is used together with copyts, vsync or async then
avoid_negative_ts is applied last. This is neccessary so that containers
which do not support negative timestamps wont get any and can be used
--
1.7.9.5
More information about the ffmpeg-devel
mailing list