@end table
@end table
+@anchor{dash}
+@section dash
+
+Dynamic Adaptive Streaming over HTTP (DASH) muxer that creates segments
+and manifest files according to the MPEG-DASH standard ISO/IEC 23009-1:2014.
+
+For more information see:
+
+@itemize @bullet
+@item
+ISO DASH Specification: @url{http://standards.iso.org/ittf/PubliclyAvailableStandards/c065274_ISO_IEC_23009-1_2014.zip}
+@item
+WebM DASH Specification: @url{https://sites.google.com/a/webmproject.org/wiki/adaptive-streaming/webm-dash-specification}
+@end itemize
+
+It creates a MPD manifest file and segment files for each stream.
+
+The segment filename might contain pre-defined identifiers used with SegmentTemplate
+as defined in section 5.3.9.4.4 of the standard. Available identifiers are "$RepresentationID$",
+"$Number$", "$Bandwidth$" and "$Time$".
+
+@example
+ffmpeg -re -i <input> -map 0 -map 0 -c:a libfdk_aac -c:v libx264
+-b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline
+-profile:v:0 main -bf 1 -keyint_min 120 -g 120 -sc_threshold 0
+-b_strategy 0 -ar:a:1 22050 -use_timeline 1 -use_template 1
+-window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a"
+-f dash /path/to/out.mpd
+@end example
+
+@table @option
+@item -min_seg_duration @var{microseconds}
+Set the segment length in microseconds.
+@item -window_size @var{size}
+Set the maximum number of segments kept in the manifest.
+@item -extra_window_size @var{size}
+Set the maximum number of segments kept outside of the manifest before removing from disk.
+@item -remove_at_exit @var{remove}
+Enable (1) or disable (0) removal of all segments when finished.
+@item -use_template @var{template}
+Enable (1) or disable (0) use of SegmentTemplate instead of SegmentList.
+@item -use_timeline @var{timeline}
+Enable (1) or disable (0) use of SegmentTimeline in SegmentTemplate.
+@item -single_file @var{single_file}
+Enable (1) or disable (0) storing all segments in one file, accessed using byte ranges.
+@item -single_file_name @var{file_name}
+DASH-templated name to be used for baseURL. Implies @var{single_file} set to "1".
+@item -init_seg_name @var{init_name}
+DASH-templated name to used for the initialization segment. Default is "init-stream$RepresentationID$.m4s"
+@item -media_seg_name @var{segment_name}
+DASH-templated name to used for the media segments. Default is "chunk-stream$RepresentationID$-$Number%05d$.m4s"
+@item -utc_timing_url @var{utc_url}
+URL of the page that will return the UTC timestamp in ISO format. Example: "https://time.akamai.com/?iso"
+@item -adaptation_sets @var{adaptation_sets}
+Assign streams to AdaptationSets. Syntax is "id=x,streams=a,b,c id=y,streams=d,e" with x and y being the IDs
+of the adaptation sets and a,b,c,d and e are the indices of the mapped streams.
+
+To map all video (or audio) streams to an AdaptationSet, "v" (or "a") can be used as stream identifier instead of IDs.
+
+When no assignment is defined, this defaults to an AdaptationSet for each stream.
+@end table
+
@anchor{framecrc}
@section framecrc
hexadecimal string to be used instead of the segment sequence number (default)
for encryption. Changes to @var{key_info_file} will result in segment
encryption with the new key/IV and an entry in the playlist for the new key
-URI/IV.
+URI/IV if @code{hls_flags periodic_rekey} is enabled.
Key info file format:
@example
Hex-coded 16byte initialization vector for every segment instead
of the autogenerated ones.
+@item hls_segment_type @var{flags}
+Possible values:
+
+@table @samp
+@item mpegts
+If this flag is set, the hls segment files will format to mpegts.
+the mpegts files is used in all hls versions.
+
+@item fmp4
+If this flag is set, the hls segment files will format to fragment mp4 looks like dash.
+the fmp4 files is used in hls after version 7.
+
+@end table
+
+@item hls_fmp4_init_filename @var{filename}
+set filename to the fragment files header file, default filename is @file{init.mp4}.
+
@item hls_flags @var{flags}
Possible values:
@item omit_endlist
Do not append the @code{EXT-X-ENDLIST} tag at the end of the playlist.
+@item periodic_rekey
+The file specified by @code{hls_key_info_file} will be checked periodically and
+detect updates to the encryption info. Be sure to replace this file atomically,
+including the file containing the AES encryption key.
+
@item split_by_time
Allow segments to start on frames other than keyframes. This improves
behavior on some players when the time between keyframes is inconsistent,
@code{refresh} times using the same method.
Note that the HTTP server must support the given method for uploading
files.
+
+@item http_user_agent
+Override User-Agent field in HTTP header. Applicable only for HTTP output.
+
@end table
@anchor{ico}
@item -write_tmcd
Specify @code{on} to force writing a timecode track, @code{off} to disable it
and @code{auto} to write a timecode track only for mov and mp4 output (default).
+@item -movflags negative_cts_offsets
+Enables utilization of version 1 of the CTTS box, in which the CTS offsets can
+be negative. This enables the initial sample to have DTS/CTS of zero, and
+reduces the need for edit lists for some cases such as video tracks with
+B-frames. Additionally, eases conformance with the DASH-IF interoperability
+guidelines.
@end table
@subsection Example
during seeking. Defaults to @code{0}.
@item reset_timestamps @var{1|0}
-Reset timestamps at the begin of each segment, so that each segment
+Reset timestamps at the beginning of each segment, so that each segment
will start with near-zero timestamps. It is meant to ease the playback
of the generated segments. May not work with some combinations of
muxers/codecs. It is set to @code{0} by default.
projects / ffmpeg / blobdiff