mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 00:32:31 +00:00
lavf/img2doc: document options
This commit is contained in:
parent
b5c7318bd7
commit
b0d23ae208
@ -34,8 +34,9 @@ specified in the pattern with the string "%%".
|
|||||||
|
|
||||||
If the pattern contains "%d" or "%0@var{N}d", the first filename of
|
If the pattern contains "%d" or "%0@var{N}d", the first filename of
|
||||||
the file list specified by the pattern must contain a number
|
the file list specified by the pattern must contain a number
|
||||||
inclusively contained between 0 and 4, all the following numbers must
|
inclusively contained between @var{start_number} and
|
||||||
be sequential. This limitation may be hopefully fixed.
|
@var{start_number}+4, all the following numbers must be
|
||||||
|
sequential.
|
||||||
|
|
||||||
The pattern may contain a suffix which is used to automatically
|
The pattern may contain a suffix which is used to automatically
|
||||||
determine the format of the images contained in the files.
|
determine the format of the images contained in the files.
|
||||||
@ -49,6 +50,23 @@ sequence of filenames of the form @file{i%m%g-1.jpg},
|
|||||||
The size, the pixel format, and the format of each image must be the
|
The size, the pixel format, and the format of each image must be the
|
||||||
same for all the files in the sequence.
|
same for all the files in the sequence.
|
||||||
|
|
||||||
|
This demuxer accepts the following options:
|
||||||
|
@table @option
|
||||||
|
@item framerate
|
||||||
|
Set the framerate for the video stream. It defaults to 25.
|
||||||
|
@item loop
|
||||||
|
If set to 1, loop over the input. Default value is 0.
|
||||||
|
@item pixel_format
|
||||||
|
Set the pixel format of the images to read. If not specified the pixel
|
||||||
|
format is guessed from the first image file in the sequence.
|
||||||
|
@item start_number
|
||||||
|
Set the index of the file matched by the image file pattern to start
|
||||||
|
to read from. Default value is 0.
|
||||||
|
@item video_size
|
||||||
|
Set the video size of the images to read. If not specified the video
|
||||||
|
size is guessed from the first image file in the sequence.
|
||||||
|
@end table
|
||||||
|
|
||||||
The following example shows how to use @command{ffmpeg} for creating a
|
The following example shows how to use @command{ffmpeg} for creating a
|
||||||
video from the images in the file sequence @file{img-001.jpeg},
|
video from the images in the file sequence @file{img-001.jpeg},
|
||||||
@file{img-002.jpeg}, ..., assuming an input frame rate of 10 frames per
|
@file{img-002.jpeg}, ..., assuming an input frame rate of 10 frames per
|
||||||
@ -57,6 +75,11 @@ second:
|
|||||||
ffmpeg -i 'img-%03d.jpeg' -r 10 out.mkv
|
ffmpeg -i 'img-%03d.jpeg' -r 10 out.mkv
|
||||||
@end example
|
@end example
|
||||||
|
|
||||||
|
As above, but start by reading from a file with index 100 in the sequence:
|
||||||
|
@example
|
||||||
|
ffmpeg -start_number 100 -i 'img-%03d.jpeg' -r 10 out.mkv
|
||||||
|
@end example
|
||||||
|
|
||||||
Note that the pattern must not necessarily contain "%d" or
|
Note that the pattern must not necessarily contain "%d" or
|
||||||
"%0@var{N}d", for example to convert a single image file
|
"%0@var{N}d", for example to convert a single image file
|
||||||
@file{img.jpeg} you can employ the command:
|
@file{img.jpeg} you can employ the command:
|
||||||
|
@ -387,11 +387,11 @@ static int read_close(struct AVFormatContext* s1)
|
|||||||
#define OFFSET(x) offsetof(VideoDemuxData, x)
|
#define OFFSET(x) offsetof(VideoDemuxData, x)
|
||||||
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
||||||
static const AVOption options[] = {
|
static const AVOption options[] = {
|
||||||
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
|
{ "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
|
||||||
{ "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
|
{ "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
|
||||||
{ "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
{ "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
||||||
{ "start_number", "first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
|
{ "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
|
||||||
{ "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
{ "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
||||||
{ NULL },
|
{ NULL },
|
||||||
};
|
};
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user