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FFmpeg/tests/ref/fate/matroska-dvbsub-remux
Andreas Rheinhardt d53acf452f avformat/matroskaenc: Don't write \0 unnecessarily
Writing the duration SimpleTag is special: It's size is
reserved in advance via an EBML Void element (if seekable)
and this reserved space is overwritten when writing the trailer;
it does not use put_ebml_string().

The string to write is created via snprintf on a buffer
of size 20; this buffer is then written via put_ebml_binary()
with a size of 20.

EBML strings need not be zero-terminated; if not, they
are implicitly terminated by the element's length field.
snprintf() always zero-terminates the buffer, i.e.
the last byte can be discarded when using an EBML string.
This patch does this.

The FATE changes are as expected: One byte saved for every
track; the only exception is the matroska-qt-mode test:
An additional byte is saved because an additional byte
could be saved from the enclosing Tags length field.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-08-10 23:56:35 +02:00

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d6385d4623cd59061c13e26b004eaa8e *tests/data/fate/matroska-dvbsub-remux.matroska
39016 tests/data/fate/matroska-dvbsub-remux.matroska
#extradata 0: 5, 0x00bb0064
#extradata 1: 5, 0x00bb0064
#tb 0: 1/1000
#media_type 0: subtitle
#codec_id 0: dvb_subtitle
#tb 1: 1/1000
#media_type 1: subtitle
#codec_id 1: dvb_subtitle
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