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FFmpeg/tests/ref/fate/matroska-encoding-delay
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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156c5c615bee0c55e76275df8d84e505 *tests/data/fate/matroska-encoding-delay.matroska
961238 tests/data/fate/matroska-encoding-delay.matroska
#extradata 0: 22, 0x32ea0490
#tb 0: 1/1000
#media_type 0: video
#codec_id 0: mpeg2video
#dimensions 0: 720x608
#sar 0: 152/135
#tb 1: 1/1000
#media_type 1: audio
#codec_id 1: mp2
#sample_rate 1: 48000
#channel_layout_name 1: stereo
1, -10, -10, 24, 1152, 0x724077b8
0, 0, 0, 40, 237628, 0xeff25579, S=1, 40
1, 14, 14, 24, 1152, 0x80625572
1, 38, 38, 24, 1152, 0x7d7f4dce
0, 40, 40, 40, 238066, 0xb2265f41
1, 62, 62, 24, 1152, 0xa6725739
0, 80, 80, 40, 237723, 0x00d7cd24
1, 86, 86, 24, 1152, 0xc9e85398
1, 110, 110, 24, 1152, 0xda1287d3
0, 120, 120, 40, 238290, 0xbe18b18f
1, 134, 134, 24, 1152, 0x1c9a6102
[PACKET]
codec_type=audio
stream_index=1
pts=-10
pts_time=-0.010000
dts=-10
dts_time=-0.010000
duration=24
duration_time=0.024000
size=1152
pos=1255
flags=K__
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=0
pts_time=0.000000
dts=0
dts_time=0.000000
duration=40
duration_time=0.040000
size=237628
pos=2415
flags=K__
[/PACKET]
[PACKET]
codec_type=audio
stream_index=1
pts=14
pts_time=0.014000
dts=14
dts_time=0.014000
duration=24
duration_time=0.024000
size=1152
pos=240050
flags=K__
[/PACKET]
[PACKET]
codec_type=audio
stream_index=1
pts=38
pts_time=0.038000
dts=38
dts_time=0.038000
duration=24
duration_time=0.024000
size=1152
pos=241225
flags=K__
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=40
pts_time=0.040000
dts=40
dts_time=0.040000
duration=40
duration_time=0.040000
size=238066
pos=242385
flags=K__
[/PACKET]
[STREAM]
codec_name=mpeg2video
[SIDE_DATA]
[/SIDE_DATA]
[/STREAM]
[STREAM]
codec_name=mp2
initial_padding=481
[/STREAM]