James Almer 1b16302e54 lavf/matroskaenc: Check for valid metadata before creating tags
Tags must have at least one SimpleTag element to be spec conformant.
Updated lavf-mkv and seek-lavf-mkv FATE references as the tests were affected by
this.

Fixes ticket #2785

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 088ed5314694031e07e02e9d364c9d486a60e704)

Conflicts:
	tests/ref/lavf/mkv
2013-08-25 18:20:35 -03:00
..
2013-01-03 19:35:02 +00:00
asf
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ast
2012-12-04 11:25:46 +00:00
avi
2012-10-16 18:51:16 +02:00
caf
2012-10-26 03:12:45 +00:00
dpx
2013-03-18 03:27:33 +01:00
flm
2012-11-03 22:47:14 +01:00
gif
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2012-12-05 13:46:35 +00:00
mpg
2013-01-04 20:58:59 +01:00
ogg
2012-07-04 16:20:47 +02:00
pam
2012-11-05 14:59:31 +00:00
pcx
2012-10-13 09:07:12 +00:00
png
2012-10-13 16:02:09 +00:00
rm
2012-12-23 16:08:10 +01:00
2012-11-05 11:22:53 +00:00
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w64
2012-12-31 07:10:57 +00:00
wtv
2012-11-07 13:59:03 +01:00
xbm
2012-04-09 17:21:35 +02:00
xwd
2012-11-05 22:31:24 +00:00