avformat/hlsenc: use AV_OPT_TYPE_DURATION

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

1 files changed, 11 insertions, 4 deletions

diff --git a/doc/muxers.texi b/doc/muxers.texi
index 8e12acaa28..1f9f2937f8 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -609,14 +609,21 @@ segmentation.
 This muxer supports the following options:
 
 @table @option
-@item hls_init_time @var{seconds}
-Set the initial target segment length in seconds. Default value is @var{0}.
+@item hls_init_time @var{duration}
+Set the initial target segment length. Default value is @var{0}.
+
+@var{duration} must be a time duration specification,
+see @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}.
+
 Segment will be cut on the next key frame after this time has passed on the first m3u8 list.
 After the initial playlist is filled @command{ffmpeg} will cut segments
 at duration equal to @code{hls_time}
 
-@item hls_time @var{seconds}
-Set the target segment length in seconds. Default value is 2.
+@item hls_time @var{duration}
+Set the target segment length. Default value is 2.
+
+@var{duration} must be a time duration specification,
+see @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}.
 Segment will be cut on the next key frame after this time has passed.
 
 @item hls_list_size @var{size}