[FFmpeg-cvslog] avformat/dashenc: document the new options

James Almer git at videolan.org
Thu Jan 16 05:13:25 EET 2020

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sat Dec 21 14:32:48 2019 -0300| [e7c04eaf50b4b50f2528ab2c69b76777a1862535] | committer: James Almer

avformat/dashenc: document the new options

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e7c04eaf50b4b50f2528ab2c69b76777a1862535

 doc/muxers.texi       | 28 +++++++++++++++++++++++++---
 libavformat/version.h |  2 +-
 2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/doc/muxers.texi b/doc/muxers.texi
index fb5c9bc4c0..5f98bc5bdc 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -236,8 +236,10 @@ This is a deprecated option to set the segment length in microseconds, use @var{
 @item seg_duration @var{duration}
 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
- at var{use_timeline} is disabled and as minimum segment duration for all the other
-use cases.
+ at item frag_duration @var{duration}
+Set the length in seconds of fragments within segments (fractional value can be set).
+ at item frag_type @var{type}
+Set the type of interval for fragmentation.
 @item window_size @var{size}
 Set the maximum number of segments kept in the manifest.
 @item extra_window_size @var{size}
@@ -278,9 +280,12 @@ To map all video (or audio) streams to an AdaptationSet, "v" (or "a") can be use
 When no assignment is defined, this defaults to an AdaptationSet for each stream.
-Optional syntax is "id=x,descriptor=descriptor_string,streams=a,b,c id=y,streams=d,e" and so on, descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015.
+Optional syntax is "id=x,seg_duration=x,frag_duration=x,frag_type=type,descriptor=descriptor_string,streams=a,b,c id=y,seg_duration=y,frag_type=type,streams=d,e" and so on,
+descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015.
 For example, -adaptation_sets "id=0,descriptor=<SupplementalProperty schemeIdUri=\"urn:mpeg:dash:srd:2014\" value=\"0,0,0,1,1,2,2\"/>,streams=v".
 Please note that descriptor string should be a self-closing xml tag.
+seg_duration, frag_duration and frag_type override the global option values for each adaptation set.
+For example, -adaptation_sets "id=0,seg_duration=2,frag_duration=1,frag_type=duration,streams=v id=1,seg_duration=2,frag_type=none,streams=a"
 @item timeout @var{timeout}
 Set timeout for socket I/O operations. Applicable only for HTTP output.
 @item index_correction @var{index_correction}
@@ -326,9 +331,26 @@ This option will also try to comply with the above open spec, till Apple's spec
 Applicable only when @var{streaming} and @var{hls_playlist} options are enabled.
 This is an experimental feature.
+ at item ldash @var{ldash}
+Enable Low-latency Dash by constraining the presence and values of some elements.
 @item master_m3u8_publish_rate @var{master_m3u8_publish_rate}
 Publish master playlist repeatedly every after specified number of segment intervals.
+ at item -write_prft @var{write_prft}
+Write Producer Reference Time elements on supported streams. This also enables writing
+prft boxes in the underlying muxer. Applicable only when the @var{utc_url} option is enabled.
+ at item -mpd_profile @var{mpd_profile}
+Set one or more manifest profiles.
+ at item -http_opts @var{http_opts}
+List of options to pass to the underlying HTTP protocol. Applicable only for HTTP output.
+ at item -target_latency @var{target_latency}
+Set an intended target latency in seconds (fractional value can be set) for serving. Applicable only when @var{streaming} and @var{write_prft} options are enabled.
+This is an informative fields clients can use to measure the latency of the service.
 @end table
diff --git a/libavformat/version.h b/libavformat/version.h
index 43f3811df1..0a79868663 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -33,7 +33,7 @@
 // Also please add any ticket numbers that you believe might be affected here
                                                LIBAVFORMAT_VERSION_MINOR, \

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