Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
F
ffmpeg
Project
Project
Details
Activity
Releases
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
0
Issues
0
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Charts
Wiki
Wiki
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Stefan Westerfeld
ffmpeg
Commits
27127ebe
Commit
27127ebe
authored
May 03, 2012
by
Stefano Sabatini
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
doc: add syntax.texi file
parent
938adb7a
Changes
5
Hide whitespace changes
Inline
Side-by-side
Showing
5 changed files
with
162 additions
and
61 deletions
+162
-61
Makefile
doc/Makefile
+1
-0
ffmpeg.texi
doc/ffmpeg.texi
+1
-61
ffplay.texi
doc/ffplay.texi
+1
-0
ffprobe.texi
doc/ffprobe.texi
+1
-0
syntax.texi
doc/syntax.texi
+158
-0
No files found.
doc/Makefile
View file @
27127ebe
...
...
@@ -8,6 +8,7 @@ HTMLPAGES = $(PROGS-yes:%=doc/%.html) \
doc/git-howto.html
\
doc/libavfilter.html
\
doc/platform.html
\
doc/syntax.html
\
TXTPAGES
=
doc/fate.txt
\
...
...
doc/ffmpeg.texi
View file @
27127ebe
...
...
@@ -286,67 +286,6 @@ Set frame rate (Hz value, fraction or abbreviation), (default = 25). For output
streams implies @code
{
-vsync cfr
}
.
@item -s[:@var
{
stream
_
specifier
}
] @var
{
size
}
(@emph
{
input/output,per-stream
}
)
Set frame size. The format is @samp
{
wxh
}
(default - same as source).
The following abbreviations are recognized:
@table @samp
@item sqcif
128x96
@item qcif
176x144
@item cif
352x288
@item 4cif
704x576
@item 16cif
1408x1152
@item qqvga
160x120
@item qvga
320x240
@item vga
640x480
@item svga
800x600
@item xga
1024x768
@item uxga
1600x1200
@item qxga
2048x1536
@item sxga
1280x1024
@item qsxga
2560x2048
@item hsxga
5120x4096
@item wvga
852x480
@item wxga
1366x768
@item wsxga
1600x1024
@item wuxga
1920x1200
@item woxga
2560x1600
@item wqsxga
3200x2048
@item wquxga
3840x2400
@item whsxga
6400x4096
@item whuxga
7680x4800
@item cga
320x200
@item ega
640x350
@item hd480
852x480
@item hd720
1280x720
@item hd1080
1920x1080
@end table
@item -aspect[:@var
{
stream
_
specifier
}
] @var
{
aspect
}
(@emph
{
output,per-stream
}
)
Set the video display aspect ratio specified by @var
{
aspect
}
.
...
...
@@ -1179,6 +1118,7 @@ ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
@end itemize
@c man end EXAMPLES
@include syntax.texi
@include eval.texi
@include decoders.texi
@include encoders.texi
...
...
doc/ffplay.texi
View file @
27127ebe
...
...
@@ -178,6 +178,7 @@ Seek to percentage in file corresponding to fraction of width.
@c man end
@include syntax.texi
@include eval.texi
@include decoders.texi
@include demuxers.texi
...
...
doc/ffprobe.texi
View file @
27127ebe
...
...
@@ -348,6 +348,7 @@ DV and GXF timecodes are available in format metadata
@end itemize
@c man end TIMECODE
@include syntax.texi
@include decoders.texi
@include demuxers.texi
@include protocols.texi
...
...
doc/syntax.texi
0 → 100644
View file @
27127ebe
@chapter Syntax
@c man begin SYNTAX
When evaluating specific formats, FFmpeg uses internal library parsing
functions, shared by the tools. This section documents the syntax of
some of these formats.
@anchor{date syntax}
@section Date
The accepted syntax is:
@example
[(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH:MM:SS[.m...]]])|(HHMMSS[.m...]]]))[Z]
now
@end example
If the value is "now" it takes the current time.
Time is local time unless Z is appended, in which case it is
interpreted as UTC.
If the year-month-day part is not specified it takes the current
year-month-day.
@anchor{time duration syntax}
@section Time duration
The accepted syntax is:
@example
[-]HH:MM:SS[.m...]
[-]S+[.m...]
@end example
@var{HH} expresses the number of hours, @var{MM} the number a of minutes
and @var{SS} the number of seconds.
@anchor{video size syntax}
@section Video size
Specify the size of the sourced video, it may be a string of the form
@var{width}x@var{height}, or the name of a size abbreviation.
The following abbreviations are recognized:
@table @samp
@item sqcif
128x96
@item qcif
176x144
@item cif
352x288
@item 4cif
704x576
@item 16cif
1408x1152
@item qqvga
160x120
@item qvga
320x240
@item vga
640x480
@item svga
800x600
@item xga
1024x768
@item uxga
1600x1200
@item qxga
2048x1536
@item sxga
1280x1024
@item qsxga
2560x2048
@item hsxga
5120x4096
@item wvga
852x480
@item wxga
1366x768
@item wsxga
1600x1024
@item wuxga
1920x1200
@item woxga
2560x1600
@item wqsxga
3200x2048
@item wquxga
3840x2400
@item whsxga
6400x4096
@item whuxga
7680x4800
@item cga
320x200
@item ega
640x350
@item hd480
852x480
@item hd720
1280x720
@item hd1080
1920x1080
@end table
@anchor{video rate syntax}
@section Video rate
Specify the frame rate of a video, expressed as the number of frames
generated per second. It has to be a string in the format
@var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float
number or a valid video frame rate abbreviation.
The following abbreviations are recognized:
@table @samp
@item ntsc
30000/1001
@item pal
25/1
@item qntsc
30000/1
@item qpal
25/1
@item sntsc
30000/1
@item spal
25/1
@item film
24/1
@item ntsc-film
24000/1
@end table
@anchor{ratio syntax}
@section Ratio
A ratio can be expressed as an expression, or in the form
@var{numerator}:@var{denominator}.
Note that a ratio with infinite (1/0) or negative value is
considered valid, so you should check on the returned value if you
want to exclude those values.
The undefined value can be expressed using the "0:0" string.
@anchor{color syntax}
@section Color
It can be the name of a color (case insensitive match) or a
[0x|#]RRGGBB[AA] sequence, possibly followed by "@" and a string
representing the alpha component.
The alpha component may be a string composed by "0x" followed by an
hexadecimal number or a decimal number between 0.0 and 1.0, which
represents the opacity value (0x00/0.0 means completely transparent,
0xff/1.0 completely opaque).
If the alpha component is not specified then 0xff is assumed.
The string "random" will result in a random color.
@c man end SYNTAX
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment