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Linshizhi
ffmpeg.wasm-core
Commits
2e798c6c
Commit
2e798c6c
authored
Sep 24, 2013
by
Clément Bœsch
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doc/faq: remove indent in examples.
CSS should take care of this.
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2e798c6c
...
@@ -105,7 +105,7 @@ For example, img1.jpg, img2.jpg, img3.jpg,...
...
@@ -105,7 +105,7 @@ For example, img1.jpg, img2.jpg, img3.jpg,...
Then you may run:
Then you may run:
@example
@example
ffmpeg -f image2 -i img
%d.jpg /tmp/a.mpg
ffmpeg -f image2 -i img
%d.jpg /tmp/a.mpg
@end example
@end example
Notice that @samp
{
%d} is replaced by the image number.
Notice that @samp
{
%d} is replaced by the image number.
...
@@ -118,7 +118,7 @@ the sequence. This is useful if your sequence does not start with
...
@@ -118,7 +118,7 @@ the sequence. This is useful if your sequence does not start with
example will start with @file
{
img100.jpg
}
:
example will start with @file
{
img100.jpg
}
:
@example
@example
ffmpeg -f image2 -start
_
number 100 -i img
%d.jpg /tmp/a.mpg
ffmpeg -f image2 -start
_
number 100 -i img
%d.jpg /tmp/a.mpg
@end example
@end example
If you have large number of pictures to rename, you can use the
If you have large number of pictures to rename, you can use the
...
@@ -128,7 +128,7 @@ that match @code{*jpg} to the @file{/tmp} directory in the sequence of
...
@@ -128,7 +128,7 @@ that match @code{*jpg} to the @file{/tmp} directory in the sequence of
@file
{
img001.jpg
}
, @file
{
img002.jpg
}
and so on.
@file
{
img001.jpg
}
, @file
{
img002.jpg
}
and so on.
@example
@example
x=1; for i in *jpg; do counter=
$
(
printf
%03d $x); ln -s "$i" /tmp/img"$counter".jpg; x=$(($x+1)); done
x=1; for i in *jpg; do counter=
$
(
printf
%03d $x); ln -s "$i" /tmp/img"$counter".jpg; x=$(($x+1)); done
@end example
@end example
If you want to sequence them by oldest modified first, substitute
If you want to sequence them by oldest modified first, substitute
...
@@ -137,7 +137,7 @@ If you want to sequence them by oldest modified first, substitute
...
@@ -137,7 +137,7 @@ If you want to sequence them by oldest modified first, substitute
Then run:
Then run:
@example
@example
ffmpeg -f image2 -i /tmp/img
%03d.jpg /tmp/a.mpg
ffmpeg -f image2 -i /tmp/img
%03d.jpg /tmp/a.mpg
@end example
@end example
The same logic is used for any image format that ffmpeg reads.
The same logic is used for any image format that ffmpeg reads.
...
@@ -145,7 +145,7 @@ The same logic is used for any image format that ffmpeg reads.
...
@@ -145,7 +145,7 @@ The same logic is used for any image format that ffmpeg reads.
You can also use @command
{
cat
}
to pipe images to ffmpeg:
You can also use @command
{
cat
}
to pipe images to ffmpeg:
@example
@example
cat *.jpg | ffmpeg -f image2pipe -c:v mjpeg -i - output.mpg
cat *.jpg | ffmpeg -f image2pipe -c:v mjpeg -i - output.mpg
@end example
@end example
@section How do I encode movie to single pictures?
@section How do I encode movie to single pictures?
...
@@ -153,7 +153,7 @@ You can also use @command{cat} to pipe images to ffmpeg:
...
@@ -153,7 +153,7 @@ You can also use @command{cat} to pipe images to ffmpeg:
Use:
Use:
@example
@example
ffmpeg -i movie.mpg movie
%d.jpg
ffmpeg -i movie.mpg movie
%d.jpg
@end example
@end example
The @file
{
movie.mpg
}
used as input will be converted to
The @file
{
movie.mpg
}
used as input will be converted to
...
@@ -169,7 +169,7 @@ to force the encoding.
...
@@ -169,7 +169,7 @@ to force the encoding.
Applying that to the previous example:
Applying that to the previous example:
@example
@example
ffmpeg -i movie.mpg -f image2 -c:v mjpeg menu
%d.jpg
ffmpeg -i movie.mpg -f image2 -c:v mjpeg menu
%d.jpg
@end example
@end example
Beware that there is no "jpeg" codec. Use "mjpeg" instead.
Beware that there is no "jpeg" codec. Use "mjpeg" instead.
...
@@ -227,11 +227,11 @@ then you may use any file that DirectShow can read as input.
...
@@ -227,11 +227,11 @@ then you may use any file that DirectShow can read as input.
Just create an "input.avs" text file with this single line ...
Just create an "input.avs" text file with this single line ...
@example
@example
DirectShowSource("C:
\path
to your file
\yourfile
.asf")
DirectShowSource("C:
\path
to your file
\yourfile
.asf")
@end example
@end example
... and then feed that text file to ffmpeg:
... and then feed that text file to ffmpeg:
@example
@example
ffmpeg -i input.avs
ffmpeg -i input.avs
@end example
@end example
For ANY other help on AviSynth, please visit the
For ANY other help on AviSynth, please visit the
...
@@ -497,7 +497,7 @@ An easy way to get the full list of required libraries in dependency order
...
@@ -497,7 +497,7 @@ An easy way to get the full list of required libraries in dependency order
is to use @code
{
pkg
-
config
}
.
is to use @code
{
pkg
-
config
}
.
@example
@example
c
99
-
o program program.c
$
(pkg-config --cflags --libs libavformat libavcodec)
c
99
-
o program program.c
$
(pkg-config --cflags --libs libavformat libavcodec)
@end example
@end example
See @file
{
doc/example/Makefile
}
and @file
{
doc/example/pc-uninstalled
}
for
See @file
{
doc/example/Makefile
}
and @file
{
doc/example/pc-uninstalled
}
for
...
...
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