v2: simplified example
Signed-off-by: Marton Balint <c...@passwd.hu>
---
doc/muxers.texi | 11 +++++++++++
libavformat/img2enc.c | 13 ++++++++++++-
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/doc/muxers.texi b/doc/muxers.texi
index fb5c9bc4c0..470a11af95 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -1193,6 +1193,11 @@ overwritten with new images. Default value is 0.
@item strftime
If set to 1, expand the filename with date and time information from
@code{strftime()}. Default value is 0.
+
+@item protocol_opts @var{options_list}
+Set protocol options as a :-separated list of key=value parameters. Values
+containing the @code{:} special character must be escaped.
+
@end table
@subsection Examples
@@ -1235,6 +1240,12 @@ You can set the file name with current frame's PTS:
ffmpeg -f v4l2 -r 1 -i /dev/video0 -copyts -f image2 -frame_pts true %d.jpg"
@end example
+A more complex example is to publish contents of your desktop directly to a
+WebDAV server every second:
+@example
+ffmpeg -f x11grab -framerate 1 -i :0.0 -q:v 6 -update 1 -protocol_opts
method=PUT http://example.com/desktop.jpg
+@end example
+
@section matroska
Matroska container muxer.
diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c
index 39398f37a3..0ad4ee11d7 100644
--- a/libavformat/img2enc.c
+++ b/libavformat/img2enc.c
@@ -23,6 +23,7 @@
#include "libavutil/intreadwrite.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
+#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
@@ -44,6 +45,7 @@ typedef struct VideoMuxData {
int frame_pts;
const char *muxer;
int use_rename;
+ AVDictionary *protocol_opts;
} VideoMuxData;
static int write_header(AVFormatContext *s)
@@ -133,6 +135,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(par->format);
int ret, i;
int nb_renames = 0;
+ AVDictionary *options = NULL;
if (img->update) {
av_strlcpy(filename, img->path, sizeof(filename));
@@ -161,13 +164,19 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
return AVERROR(EINVAL);
}
for (i = 0; i < 4; i++) {
+ av_dict_copy(&options, img->protocol_opts, 0);
snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
- if (s->io_open(s, &pb[i], img->use_rename ? img->tmp[i] : filename,
AVIO_FLAG_WRITE, NULL) < 0) {
+ if (s->io_open(s, &pb[i], img->use_rename ? img->tmp[i] : filename,
AVIO_FLAG_WRITE, &options) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",
img->use_rename ? img->tmp[i] : filename);
ret = AVERROR(EIO);
goto fail;
}
+ if (options) {
+ av_log(s, AV_LOG_ERROR, "Could not recognize some protocol
options\n");
+ ret = AVERROR(EINVAL);
+ goto fail;
+ }
if (!img->split_planes || i+1 >= desc->nb_components)
break;
@@ -211,6 +220,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
return 0;
fail:
+ av_dict_free(&options);
for (i = 0; i < FF_ARRAY_ELEMS(pb); i++)
if (pb[i])
ff_format_io_close(s, &pb[i]);
@@ -236,6 +246,7 @@ static const AVOption muxoptions[] = {
{ "strftime", "use strftime for filename", OFFSET(use_strftime),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "frame_pts", "use current frame pts for filename", OFFSET(frame_pts),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "atomic_writing", "write files atomically (using temporary files and
renames)", OFFSET(use_rename), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
+ { "protocol_opts", "specify protocol options for the opened files",
OFFSET(protocol_opts), AV_OPT_TYPE_DICT, {0}, 0, 0, ENC },
{ NULL },
};
--
2.16.4
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