avformat/dashenc: segmentation at the configured segment duration rate

When use_template is enabled and use_timeline is disabled, typically
it is required to generate the segments at the configured segment duration
rate on an average. This commit is particularly needed to handle the
segmentation when video frame rates are fractional like 29.97 or 59.94 fps.

1 files changed, 4 insertions, 1 deletions

diff --git a/doc/muxers.texi b/doc/muxers.texi
index fad9c9aced..6195575951 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -228,7 +228,10 @@ ffmpeg -re -i <input> -map 0 -map 0 -c:a libfdk_aac -c:v libx264
 @item -min_seg_duration @var{microseconds}
 This is a deprecated option to set the segment length in microseconds, use @var{seg_duration} instead.
 @item -seg_duration @var{duration}
-Set the segment length in seconds (fractional value can be set).
+Set the segment length in seconds (fractional value can be set). The value is
+treated as average segment duration when @var{use_template} is enabled and
+@var{use_timeline} is disabled and as minimum segment duration for all the other
+use cases.
 @item -window_size @var{size}
 Set the maximum number of segments kept in the manifest.
 @item -extra_window_size @var{size}