Set the number after which index wraps.
@item -start_number @var{number}
Start the sequence from @var{number}.
+@item -hls_base_url @var{baseurl}
+Append @var{baseurl} to every entry in the playlist.
+Useful to generate playlists with absolute paths.
@end table
@anchor{image2}
@table @option
@item -start_number @var{number}
Start the sequence from @var{number}.
+
+@item -update @var{number}
+If @var{number} is nonzero, the filename will always be interpreted as just a
+filename, not a pattern, and this file will be continuously overwritten with new
+images.
+
+@end table
+
+@section matroska
+
+Matroska container muxer.
+
+This muxer implements the matroska and webm container specs.
+
+The recognized metadata settings in this muxer are:
+
+@table @option
+
+@item title=@var{title name}
+Name provided to a single track
+@end table
+
+@table @option
+
+@item language=@var{language name}
+Specifies the language of the track in the Matroska languages form
+@end table
+
+@table @option
+
+@item STEREO_MODE=@var{mode}
+Stereo 3D video layout of two views in a single video track
+@table @option
+@item mono
+video is not stereo
+@item left_right
+Both views are arranged side by side, Left-eye view is on the left
+@item bottom_top
+Both views are arranged in top-bottom orientation, Left-eye view is at bottom
+@item top_bottom
+Both views are arranged in top-bottom orientation, Left-eye view is on top
+@item checkerboard_rl
+Each view is arranged in a checkerboard interleaved pattern, Left-eye view being first
+@item checkerboard_lr
+Each view is arranged in a checkerboard interleaved pattern, Right-eye view being first
+@item row_interleaved_rl
+Each view is constituted by a row based interleaving, Right-eye view is first row
+@item row_interleaved_lr
+Each view is constituted by a row based interleaving, Left-eye view is first row
+@item col_interleaved_rl
+Both views are arranged in a column based interleaving manner, Right-eye view is first column
+@item col_interleaved_lr
+Both views are arranged in a column based interleaving manner, Left-eye view is first column
+@item anaglyph_cyan_red
+All frames are in anaglyph format viewable through red-cyan filters
+@item right_left
+Both views are arranged side by side, Right-eye view is on the left
+@item anaglyph_green_magenta
+All frames are in anaglyph format viewable through green-magenta filters
+@item block_lr
+Both eyes laced in one Block, Left-eye view is first
+@item block_rl
+Both eyes laced in one Block, Right-eye view is first
+@end table
+@end table
+
+For example a 3D WebM clip can be created using the following command line:
+@example
+avconv -i sample_left_right_clip.mpg -an -c:v libvpx -metadata STEREO_MODE=left_right -y stereo_clip.webm
+@end example
+
+This muxer supports the following options:
+
+@table @option
+
+@item reserve_index_space
+By default, this muxer writes the index for seeking (called cues in Matroska
+terms) at the end of the file, because it cannot know in advance how much space
+to leave for the index at the beginning of the file. However for some use cases
+-- e.g. streaming where seeking is possible but slow -- it is useful to put the
+index at the beginning of the file.
+
+If this option is set to a non-zero value, the muxer will reserve a given amount
+of space in the file header and then try to write the cues there when the muxing
+finishes. If the available space does not suffice, muxing will fail. A safe size
+for most use cases should be about 50kB per hour of video.
+
+Note that cues are only written if the output is seekable and this option will
+have no effect if it is not.
+
@end table
-@section MOV/MP4/ISMV
+@section mov, mp4, ismv
The mov/mp4/ismv muxer supports fragmentation. Normally, a MOV/MP4
file has all the metadata about all packets stored in one location
pair for each track, making it easier to separate tracks.
This option is implicitly set when writing ismv (Smooth Streaming) files.
+@item -movflags faststart
+Run a second pass moving the index (moov atom) to the beginning of the file.
+This operation can take a while, and will not work in various situations such
+as fragmented output, thus it is not enabled by default.
+@item -movflags disable_chpl
+Disable Nero chapter markers (chpl atom). Normally, both Nero chapters
+and a QuickTime chapter track are written to the file. With this option
+set, only the QuickTime chapter track will be written. Nero chapters can
+cause failures when the file is reprocessed with certain tagging programs.
@end table
Smooth Streaming content can be pushed in real time to a publishing
avconv -re @var{<normal input/transcoding options>} -movflags isml+frag_keyframe -f ismv http://server/publishingpoint.isml/Streams(Encoder1)
@end example
+@section mp3
+
+The MP3 muxer writes a raw MP3 stream with an ID3v2 header at the beginning and
+optionally an ID3v1 tag at the end. ID3v2.3 and ID3v2.4 are supported, the
+@code{id3v2_version} option controls which one is used. Setting
+@code{id3v2_version} to 0 will disable the ID3v2 header completely. The legacy
+ID3v1 tag is not written by default, but may be enabled with the
+@code{write_id3v1} option.
+
+The muxer may also write a Xing frame at the beginning, which contains the
+number of frames in the file. It is useful for computing duration of VBR files.
+The Xing frame is written if the output stream is seekable and if the
+@code{write_xing} option is set to 1 (the default).
+
+The muxer supports writing ID3v2 attached pictures (APIC frames). The pictures
+are supplied to the muxer in form of a video stream with a single packet. There
+can be any number of those streams, each will correspond to a single APIC frame.
+The stream metadata tags @var{title} and @var{comment} map to APIC
+@var{description} and @var{picture type} respectively. See
+@url{http://id3.org/id3v2.4.0-frames} for allowed picture types.
+
+Note that the APIC frames must be written at the beginning, so the muxer will
+buffer the audio frames until it gets all the pictures. It is therefore advised
+to provide the pictures as soon as possible to avoid excessive buffering.
+
+Examples:
+
+Write an mp3 with an ID3v2.3 header and an ID3v1 footer:
+@example
+avconv -i INPUT -id3v2_version 3 -write_id3v1 1 out.mp3
+@end example
+
+Attach a picture to an mp3:
+@example
+avconv -i input.mp3 -i cover.png -c copy -metadata:s:v title="Album cover"
+-metadata:s:v comment="Cover (Front)" out.mp3
+@end example
+
+Write a "clean" MP3 without any extra features:
+@example
+avconv -i input.wav -write_xing 0 -id3v2_version 0 out.mp3
+@end example
+
@section mpegts
MPEG transport stream muxer.
Set the first PID for PMT (default 0x1000, max 0x1f00).
@item -mpegts_start_pid @var{number}
Set the first PID for data packets (default 0x0100, max 0x0f00).
+@item -muxrate @var{number}
+Set a constant muxrate (default VBR).
+@item -pcr_period @var{numer}
+Override the default PCR retransmission time (default 20ms), ignored
+if variable muxrate is selected.
@end table
The recognized metadata settings in mpegts muxer are @code{service_provider}
avconv -benchmark -i INPUT -f null -
@end example
-@section matroska
-
-Matroska container muxer.
-
-This muxer implements the matroska and webm container specs.
-
-The recognized metadata settings in this muxer are:
+@section nut
@table @option
-
-@item title=@var{title name}
-Name provided to a single track
+@item -syncpoints @var{flags}
+Change the syncpoint usage in nut:
+@table @option
+@item @var{default} use the normal low-overhead seeking aids.
+@item @var{none} do not use the syncpoints at all, reducing the overhead but making the stream non-seekable;
+@item @var{timestamped} extend the syncpoint with a wallclock field.
+@end table
+The @var{none} and @var{timestamped} flags are experimental.
@end table
-@table @option
+@example
+avconv -i INPUT -f_strict experimental -syncpoints none - | processor
+@end example
-@item language=@var{language name}
-Specifies the language of the track in the Matroska languages form
-@end table
+@section ogg
-@table @option
+Ogg container muxer.
-@item STEREO_MODE=@var{mode}
-Stereo 3D video layout of two views in a single video track
@table @option
-@item mono
-video is not stereo
-@item left_right
-Both views are arranged side by side, Left-eye view is on the left
-@item bottom_top
-Both views are arranged in top-bottom orientation, Left-eye view is at bottom
-@item top_bottom
-Both views are arranged in top-bottom orientation, Left-eye view is on top
-@item checkerboard_rl
-Each view is arranged in a checkerboard interleaved pattern, Left-eye view being first
-@item checkerboard_lr
-Each view is arranged in a checkerboard interleaved pattern, Right-eye view being first
-@item row_interleaved_rl
-Each view is constituted by a row based interleaving, Right-eye view is first row
-@item row_interleaved_lr
-Each view is constituted by a row based interleaving, Left-eye view is first row
-@item col_interleaved_rl
-Both views are arranged in a column based interleaving manner, Right-eye view is first column
-@item col_interleaved_lr
-Both views are arranged in a column based interleaving manner, Left-eye view is first column
-@item anaglyph_cyan_red
-All frames are in anaglyph format viewable through red-cyan filters
-@item right_left
-Both views are arranged side by side, Right-eye view is on the left
-@item anaglyph_green_magenta
-All frames are in anaglyph format viewable through green-magenta filters
-@item block_lr
-Both eyes laced in one Block, Left-eye view is first
-@item block_rl
-Both eyes laced in one Block, Right-eye view is first
-@end table
+@item -page_duration @var{duration}
+Preferred page duration, in microseconds. The muxer will attempt to create
+pages that are approximately @var{duration} microseconds long. This allows the
+user to compromise between seek granularity and container overhead. The default
+is 1 second. A value of 0 will fill all segments, making pages as large as
+possible. A value of 1 will effectively use 1 packet-per-page in most
+situations, giving a small seek granularity at the cost of additional container
+overhead.
@end table
-For example a 3D WebM clip can be created using the following command line:
-@example
-avconv -i sample_left_right_clip.mpg -an -c:v libvpx -metadata STEREO_MODE=left_right -y stereo_clip.webm
-@end example
-
@section segment
Basic stream segmenter.
Set segment duration to @var{t} seconds.
@item segment_list @var{name}
Generate also a listfile named @var{name}.
+@item segment_list_type @var{type}
+Select the listing format.
+@table @option
+@item @var{flat} use a simple flat list of entries.
+@item @var{hls} use a m3u8-like structure.
+@end table
@item segment_list_size @var{size}
Overwrite the listfile once it reaches @var{size} entries.
+@item segment_list_entry_prefix @var{prefix}
+Prepend @var{prefix} to each entry. Useful to generate absolute paths.
@item segment_wrap @var{limit}
Wrap around segment index once it reaches @var{limit}.
@end table
avconv -i in.mkv -c copy -map 0 -f segment -list out.list out%03d.nut
@end example
-@section mp3
-
-The MP3 muxer writes a raw MP3 stream with an ID3v2 header at the beginning and
-optionally an ID3v1 tag at the end. ID3v2.3 and ID3v2.4 are supported, the
-@code{id3v2_version} option controls which one is used. The legacy ID3v1 tag is
-not written by default, but may be enabled with the @code{write_id3v1} option.
-
-For seekable output the muxer also writes a Xing frame at the beginning, which
-contains the number of frames in the file. It is useful for computing duration
-of VBR files.
-
-The muxer supports writing ID3v2 attached pictures (APIC frames). The pictures
-are supplied to the muxer in form of a video stream with a single packet. There
-can be any number of those streams, each will correspond to a single APIC frame.
-The stream metadata tags @var{title} and @var{comment} map to APIC
-@var{description} and @var{picture type} respectively. See
-@url{http://id3.org/id3v2.4.0-frames} for allowed picture types.
-
-Note that the APIC frames must be written at the beginning, so the muxer will
-buffer the audio frames until it gets all the pictures. It is therefore advised
-to provide the pictures as soon as possible to avoid excessive buffering.
-
-Examples:
-
-Write an mp3 with an ID3v2.3 header and an ID3v1 footer:
-@example
-avconv -i INPUT -id3v2_version 3 -write_id3v1 1 out.mp3
-@end example
-
-Attach a picture to an mp3:
-@example
-avconv -i input.mp3 -i cover.png -c copy -metadata:s:v title="Album cover"
--metadata:s:v comment="Cover (Front)" out.mp3
-@end example
-
-@section ogg
-
-Ogg container muxer.
-
-@table @option
-@item -page_duration @var{duration}
-Preferred page duration, in microseconds. The muxer will attempt to create
-pages that are approximately @var{duration} microseconds long. This allows the
-user to compromise between seek granularity and container overhead. The default
-is 1 second. A value of 0 will fill all segments, making pages as large as
-possible. A value of 1 will effectively use 1 packet-per-page in most
-situations, giving a small seek granularity at the cost of additional container
-overhead.
-@end table
-
@c man end MUXERS