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FFmpeg/tests/ref/fate/matroska-vp8-alpha-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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129f76bb3cee967ebd067efa30c4e4f7 *tests/data/fate/matroska-vp8-alpha-remux.matroska
235025 tests/data/fate/matroska-vp8-alpha-remux.matroska
#tb 0: 1/1000
#media_type 0: video
#codec_id 0: vp8
#dimensions 0: 320x213
#sar 0: 1/1
0, 0, 0, 33, 2108, 0x59b92a34, S=2, 1900, 12
0, 32, 32, 33, 142, 0x2f2a3fed, F=0x0, S=1, 160
0, 65, 65, 33, 157, 0x17804767, F=0x0, S=1, 209
0, 99, 99, 33, 206, 0x537262ca, F=0x0, S=1, 317
0, 132, 132, 33, 259, 0x73ff74b6, F=0x0, S=1, 384
0, 165, 165, 33, 320, 0x0fcf8ce4, F=0x0, S=1, 415
0, 199, 199, 33, 377, 0x8fffb5f5, F=0x0, S=1, 475
[STREAM]
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=1
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
DISPOSITION:captions=0
DISPOSITION:descriptions=0
DISPOSITION:metadata=0
DISPOSITION:dependent=0
DISPOSITION:still_image=0
[SIDE_DATA]
side_data_type=Stereo 3D
type=2D
inverted=0
[/SIDE_DATA]
[/STREAM]