From: Peter Große <pe...@friks.de>
If set, adds a UTCTime tag in the manifest.
See
http://vm2.dashif.org/dash.js/docs/jsdocs/MediaPlayer.html#addUTCTimingSource
for more information.
Usable default: "https://time.akamai.com/?iso";
Signed-off-by: Peter Große <pe...@friiks.de>
---
libavformat/dashenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 44785cd..198932c 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -94,6 +94,7 @@ typedef struct DASHContext {
const char *single_file_name;
const char *init_seg_name;
const char *media_seg_name;
+ const char *utc_timing_url;
} DASHContext;
static int dash_write(void *opaque, uint8_t *buf, int buf_size)
@@ -490,6 +491,9 @@ static int write_manifest(AVFormatContext *s, int final)
av_free(escaped);
}
avio_printf(out, "\t</ProgramInformation>\n");
+ if (c->utc_timing_url)
+ avio_printf(out, "\t<UTCTiming
schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n",
c->utc_timing_url);
+
if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0
&& !c->use_template) {
OutputStream *os = &c->streams[0];
int start_index = FFMAX(os->nb_segments - c->window_size, 0);
@@ -981,6 +985,7 @@ static const AVOption options[] = {
{ "single_file_name", "DASH-templated name to be used for baseURL. Implies
storing all segments in one file, accessed using byte ranges",
OFFSET(single_file_name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
{ "init_seg_name", "DASH-templated name to used for the initialization
segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str =
"init-stream$RepresentationID$.m4s"}, 0, 0, E },
{ "media_seg_name", "DASH-templated name to used for the media segments",
OFFSET(media_seg_name), AV_OPT_TYPE_STRING, {.str =
"chunk-stream$RepresentationID$-$Number%05d$.m4s"}, 0, 0, E },
+ { "utc_timing_url", "URL of the page that will return the UTC timestamp in
ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0,
AV_OPT_FLAG_ENCODING_PARAM },
{ NULL },
};
--
2.10.2
_______________________________________________
libav-devel mailing list
libav-devel@libav.org
https://lists.libav.org/mailman/listinfo/libav-devel
