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matroska : Add support for reading/writing creation_time metadata.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Aaron Colwell
2012-03-05 19:02:48 +01:00
committed by Michael Niedermayer
parent c7048036db
commit 2e061130f4
2 changed files with 24 additions and 1 deletions
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8
libavformat/matroskaenc.c
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@@ -940,6 +940,14 @@ static int mkv_write_header(AVFormatContext *s)
put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
}
if (tag = av_dict_get(s->metadata, "creation_time", NULL, 0)) {
// Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
int64_t date_utc = (ff_iso8601_to_unix_time(tag->value) - 978307200) * 1000000000;
uint8_t date_utc_buf[8];
AV_WB64(date_utc_buf, date_utc);
put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
}
// reserve space for the duration
mkv->duration = 0;
mkv->duration_offset = avio_tell(pb);