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Linshizhi
ffmpeg.wasm-core
Commits
3ec34462
Commit
3ec34462
authored
Oct 10, 2011
by
Alexandra Khirnova
Committed by
Anton Khirnov
Oct 17, 2011
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avconv: add presets
Signed-off-by:
Anton Khirnov
<
anton@khirnov.net
>
parent
51369f28
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Showing
2 changed files
with
93 additions
and
1 deletion
+93
-1
avconv.c
avconv.c
+76
-1
avconv.texi
doc/avconv.texi
+17
-0
No files found.
avconv.c
View file @
3ec34462
...
@@ -326,6 +326,8 @@ typedef struct OptionsContext {
...
@@ -326,6 +326,8 @@ typedef struct OptionsContext {
int
nb_inter_matrices
;
int
nb_inter_matrices
;
SpecifierOpt
*
top_field_first
;
SpecifierOpt
*
top_field_first
;
int
nb_top_field_first
;
int
nb_top_field_first
;
SpecifierOpt
*
presets
;
int
nb_presets
;
#if CONFIG_AVFILTER
#if CONFIG_AVFILTER
SpecifierOpt
*
filters
;
SpecifierOpt
*
filters
;
int
nb_filters
;
int
nb_filters
;
...
@@ -2966,15 +2968,62 @@ static void parse_forced_key_frames(char *kf, OutputStream *ost,
...
@@ -2966,15 +2968,62 @@ static void parse_forced_key_frames(char *kf, OutputStream *ost,
}
}
}
}
static
uint8_t
*
get_line
(
AVIOContext
*
s
)
{
AVIOContext
*
line
;
uint8_t
*
buf
;
char
c
;
if
(
avio_open_dyn_buf
(
&
line
)
<
0
)
{
av_log
(
NULL
,
AV_LOG_FATAL
,
"Could not alloc buffer for reading preset.
\n
"
);
exit_program
(
1
);
}
while
((
c
=
avio_r8
(
s
))
&&
c
!=
'\n'
)
avio_w8
(
line
,
c
);
avio_w8
(
line
,
0
);
avio_close_dyn_buf
(
line
,
&
buf
);
return
buf
;
}
static
int
get_preset_file_2
(
const
char
*
preset_name
,
const
char
*
codec_name
,
AVIOContext
**
s
)
{
int
i
,
ret
=
1
;
char
filename
[
1000
];
const
char
*
base
[
3
]
=
{
getenv
(
"AVCONV_DATADIR"
),
getenv
(
"HOME"
),
AVCONV_DATADIR
,
};
for
(
i
=
0
;
i
<
FF_ARRAY_ELEMS
(
base
)
&&
ret
;
i
++
)
{
if
(
!
base
[
i
])
continue
;
if
(
codec_name
)
{
snprintf
(
filename
,
sizeof
(
filename
),
"%s%s/%s-%s.avpreset"
,
base
[
i
],
i
!=
1
?
""
:
"/.avconv"
,
codec_name
,
preset_name
);
ret
=
avio_open
(
s
,
filename
,
AVIO_FLAG_READ
);
}
if
(
ret
)
{
snprintf
(
filename
,
sizeof
(
filename
),
"%s%s/%s.avpreset"
,
base
[
i
],
i
!=
1
?
""
:
"/.avconv"
,
preset_name
);
ret
=
avio_open
(
s
,
filename
,
AVIO_FLAG_READ
);
}
}
return
ret
;
}
static
OutputStream
*
new_output_stream
(
OptionsContext
*
o
,
AVFormatContext
*
oc
,
enum
AVMediaType
type
)
static
OutputStream
*
new_output_stream
(
OptionsContext
*
o
,
AVFormatContext
*
oc
,
enum
AVMediaType
type
)
{
{
OutputStream
*
ost
;
OutputStream
*
ost
;
AVStream
*
st
=
av_new_stream
(
oc
,
oc
->
nb_streams
<
o
->
nb_streamid_map
?
o
->
streamid_map
[
oc
->
nb_streams
]
:
0
);
AVStream
*
st
=
av_new_stream
(
oc
,
oc
->
nb_streams
<
o
->
nb_streamid_map
?
o
->
streamid_map
[
oc
->
nb_streams
]
:
0
);
int
idx
=
oc
->
nb_streams
-
1
;
int
idx
=
oc
->
nb_streams
-
1
,
ret
=
0
;
int64_t
max_frames
=
INT64_MAX
;
int64_t
max_frames
=
INT64_MAX
;
char
*
bsf
=
NULL
,
*
next
,
*
codec_tag
=
NULL
;
char
*
bsf
=
NULL
,
*
next
,
*
codec_tag
=
NULL
;
AVBitStreamFilterContext
*
bsfc
,
*
bsfc_prev
=
NULL
;
AVBitStreamFilterContext
*
bsfc
,
*
bsfc_prev
=
NULL
;
double
qscale
=
-
1
;
double
qscale
=
-
1
;
char
*
buf
=
NULL
,
*
arg
=
NULL
,
*
preset
=
NULL
;
AVIOContext
*
s
=
NULL
;
if
(
!
st
)
{
if
(
!
st
)
{
av_log
(
NULL
,
AV_LOG_FATAL
,
"Could not alloc stream.
\n
"
);
av_log
(
NULL
,
AV_LOG_FATAL
,
"Could not alloc stream.
\n
"
);
...
@@ -2996,6 +3045,31 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
...
@@ -2996,6 +3045,31 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
avcodec_get_context_defaults3
(
st
->
codec
,
ost
->
enc
);
avcodec_get_context_defaults3
(
st
->
codec
,
ost
->
enc
);
st
->
codec
->
codec_type
=
type
;
// XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
st
->
codec
->
codec_type
=
type
;
// XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
MATCH_PER_STREAM_OPT
(
presets
,
str
,
preset
,
oc
,
st
);
if
(
preset
&&
(
!
(
ret
=
get_preset_file_2
(
preset
,
ost
->
enc
->
name
,
&
s
))))
{
do
{
buf
=
get_line
(
s
);
if
(
!
buf
[
0
]
||
buf
[
0
]
==
'#'
)
{
av_free
(
buf
);
continue
;
}
if
(
!
(
arg
=
strchr
(
buf
,
'='
)))
{
av_log
(
NULL
,
AV_LOG_FATAL
,
"Invalid line found in the preset file.
\n
"
);
exit_program
(
1
);
}
*
arg
++
=
0
;
av_dict_set
(
&
ost
->
opts
,
buf
,
arg
,
AV_DICT_DONT_OVERWRITE
);
av_free
(
buf
);
}
while
(
!
s
->
eof_reached
);
avio_close
(
s
);
}
if
(
ret
)
{
av_log
(
NULL
,
AV_LOG_FATAL
,
"Preset %s specified for stream %d:%d, but could not be opened.
\n
"
,
preset
,
ost
->
file_index
,
ost
->
index
);
exit_program
(
1
);
}
MATCH_PER_STREAM_OPT
(
max_frames
,
i64
,
max_frames
,
oc
,
st
);
MATCH_PER_STREAM_OPT
(
max_frames
,
i64
,
max_frames
,
oc
,
st
);
ost
->
max_frames
=
max_frames
;
ost
->
max_frames
=
max_frames
;
...
@@ -3906,6 +3980,7 @@ static const OptionDef options[] = {
...
@@ -3906,6 +3980,7 @@ static const OptionDef options[] = {
{
"y"
,
OPT_BOOL
,
{(
void
*
)
&
file_overwrite
},
"overwrite output files"
},
{
"y"
,
OPT_BOOL
,
{(
void
*
)
&
file_overwrite
},
"overwrite output files"
},
{
"c"
,
HAS_ARG
|
OPT_STRING
|
OPT_SPEC
,
{.
off
=
OFFSET
(
codec_names
)},
"codec name"
,
"codec"
},
{
"c"
,
HAS_ARG
|
OPT_STRING
|
OPT_SPEC
,
{.
off
=
OFFSET
(
codec_names
)},
"codec name"
,
"codec"
},
{
"codec"
,
HAS_ARG
|
OPT_STRING
|
OPT_SPEC
,
{.
off
=
OFFSET
(
codec_names
)},
"codec name"
,
"codec"
},
{
"codec"
,
HAS_ARG
|
OPT_STRING
|
OPT_SPEC
,
{.
off
=
OFFSET
(
codec_names
)},
"codec name"
,
"codec"
},
{
"pre"
,
HAS_ARG
|
OPT_STRING
|
OPT_SPEC
,
{.
off
=
OFFSET
(
presets
)},
"preset name"
,
"preset"
},
{
"map"
,
HAS_ARG
|
OPT_EXPERT
|
OPT_FUNC2
,
{(
void
*
)
opt_map
},
"set input stream mapping"
,
"file.stream[:syncfile.syncstream]"
},
{
"map"
,
HAS_ARG
|
OPT_EXPERT
|
OPT_FUNC2
,
{(
void
*
)
opt_map
},
"set input stream mapping"
,
"file.stream[:syncfile.syncstream]"
},
{
"map_metadata"
,
HAS_ARG
|
OPT_EXPERT
|
OPT_FUNC2
,
{(
void
*
)
opt_map_metadata
},
"set metadata information of outfile from infile"
,
{
"map_metadata"
,
HAS_ARG
|
OPT_EXPERT
|
OPT_FUNC2
,
{(
void
*
)
opt_map_metadata
},
"set metadata information of outfile from infile"
,
"outfile[,metadata]:infile[,metadata]"
},
"outfile[,metadata]:infile[,metadata]"
},
...
...
doc/avconv.texi
View file @
3ec34462
...
@@ -186,6 +186,8 @@ codec-dependent.
...
@@ -186,6 +186,8 @@ codec-dependent.
@var
{
filter
_
graph
}
is a description of the filter graph to apply to
@var
{
filter
_
graph
}
is a description of the filter graph to apply to
the stream. Use @code
{
-filters
}
to show all the available filters
the stream. Use @code
{
-filters
}
to show all the available filters
(including also sources and sinks).
(including also sources and sinks).
@item -pre[:@var
{
stream
_
specifier
}
] @var
{
preset
_
name
}
(@emph
{
output,per-stream
}
)
Specify the preset for matching stream(s).
@item -stats (@emph
{
global
}
)
@item -stats (@emph
{
global
}
)
Print encoding progress/statistics. On by default.
Print encoding progress/statistics. On by default.
...
@@ -770,6 +772,21 @@ quality).
...
@@ -770,6 +772,21 @@ quality).
@chapter Examples
@chapter Examples
@c man begin EXAMPLES
@c man begin EXAMPLES
@section Preset files
A preset file contains a sequence of @var
{
option=value
}
pairs, one for
each line, specifying a sequence of options which can be specified also on
the command line. Lines starting with the hash ('#') character are ignored and
are used to provide comments. Empty lines are also ignored. Check the
@file
{
ffpresets
}
directory in the Libav source tree for examples.
Preset files are specified with the @code
{
pre
}
option, this option takes a
preset name as input. Avconv searches for a file named @var
{
preset
_
name
}
.avpreset in
the directories @file
{$
AVCONV
_
DATADIR
}
(
if set
)
, and @file
{$
HOME/.avconv
}
, and in
the data directory defined at configuration time (usually @file
{$
PREFIX
/
share
/
avconv
}
)
in that order. For example, if the argument is @code
{
libx
264
-
max
}
, it will
search for the file @file
{
libx
264
-
max.avpreset
}
.
@section Video and Audio grabbing
@section Video and Audio grabbing
If you specify the input format and device then avconv can grab video
If you specify the input format and device then avconv can grab video
...
...
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