[FFmpeg-trac] #9812(ffmpeg:new): LEAD_PERFORMER tag on Matroska chapter gets changed to PERFORMER
FFmpeg
trac at avcodec.org
Wed Jun 15 06:52:00 EEST 2022
#9812: LEAD_PERFORMER tag on Matroska chapter gets changed to PERFORMER
-------------------------------------+-------------------------------------
Reporter: wvc | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: git-
Keywords: matroska | master
metadata | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
When processing a Matroska file with a `LEAD_PERFORMER` tag on a chapter,
FFmpeg changes the tag to `PERFORMER`.
How to reproduce:
{{{
$ mkvextract test.mkv tags
<?xml version="1.0"?>
<!-- <!DOCTYPE Tags SYSTEM "matroskatags.dtd"> -->
<Tags>
<Tag>
<Targets>
<ChapterUID>1</ChapterUID>
</Targets>
<Simple>
<Name>LEAD_PERFORMER</Name>
<String>Bob</String>
</Simple>
</Tag>
<Tag>
<Targets />
<Simple>
<Name>ENCODER</Name>
<String>Lavf59.16.100</String>
</Simple>
</Tag>
<Tag>
<Targets>
<TrackUID>6303416409872754858</TrackUID>
</Targets>
<Simple>
<Name>ENCODER</Name>
<String>Lavc59.18.100 libx264</String>
</Simple>
<Simple>
<Name>DURATION</Name>
<String>00:00:01.000000000</String>
</Simple>
</Tag>
</Tags>
$ $ ffmpeg -i test.mkv -c copy test2.mkv
ffmpeg version N-107110-ge5f6707a7b Copyright (c) 2000-2022 the FFmpeg
developers
built with gcc 10 (Debian 10.2.1-6)
configuration:
libavutil 57. 27.100 / 57. 27.100
libavcodec 59. 33.100 / 59. 33.100
libavformat 59. 25.100 / 59. 25.100
libavdevice 59. 6.100 / 59. 6.100
libavfilter 8. 40.100 / 8. 40.100
libswscale 6. 6.100 / 6. 6.100
libswresample 4. 6.100 / 4. 6.100
Input #0, matroska,webm, from 'test.mkv':
Metadata:
ENCODER : Lavf59.16.100
Duration: 00:00:01.00, start: 0.000000, bitrate: 68 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 1.000000
Metadata:
performer : Bob
Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuv444p(tv,
progressive), 320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 1k tbn
Metadata:
ENCODER : Lavc59.18.100 libx264
DURATION : 00:00:01.000000000
Output #0, matroska, to 'test2.mkv':
Metadata:
encoder : Lavf59.25.100
Chapters:
Chapter #0:0: start 0.000000, end 1.000000
Metadata:
LEAD_PERFORMER : Bob
Stream #0:0: Video: h264 (High 4:4:4 Predictive) (H264 / 0x34363248),
yuv444p(tv, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 25 fps, 25
tbr, 1k tbn
Metadata:
ENCODER : Lavc59.18.100 libx264
DURATION : 00:00:01.000000000
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 25 fps=0.0 q=-1.0 Lsize= 8kB time=00:00:00.88 bitrate=
77.5kbits/s speed=3.66e+03x
video:7kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 11.583214%
$ $ mkvextract test2.mkv tags
<?xml version="1.0"?>
<!-- <!DOCTYPE Tags SYSTEM "matroskatags.dtd"> -->
<Tags>
<Tag>
<Targets>
<ChapterUID>1</ChapterUID>
</Targets>
<Simple>
<Name>PERFORMER</Name>
<String>Bob</String>
</Simple>
</Tag>
<Tag>
<Targets />
<Simple>
<Name>ENCODER</Name>
<String>Lavf59.25.100</String>
</Simple>
</Tag>
<Tag>
<Targets>
<TrackUID>11395597827482505527</TrackUID>
</Targets>
<Simple>
<Name>ENCODER</Name>
<String>Lavc59.18.100 libx264</String>
</Simple>
<Simple>
<Name>DURATION</Name>
<String>00:00:01.000000000</String>
</Simple>
</Tag>
</Tags>
$ ffmpeg -v 9 -loglevel 99 -i test.mkv
ffmpeg version N-107110-ge5f6707a7b Copyright (c) 2000-2022 the FFmpeg
developers
built with gcc 10 (Debian 10.2.1-6)
configuration:
libavutil 57. 27.100 / 57. 27.100
libavcodec 59. 33.100 / 59. 33.100
libavformat 59. 25.100 / 59. 25.100
libavdevice 59. 6.100 / 59. 6.100
libavfilter 8. 40.100 / 8. 40.100
libswscale 6. 6.100 / 6. 6.100
libswresample 4. 6.100 / 4. 6.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument '99'.
Reading option '-i' ... matched as input url with argument 'test.mkv'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input url test.mkv.
Successfully parsed a group of options.
Opening an input file: test.mkv.
[NULL @ 0x560ab5fd3400] Opening 'test.mkv' for reading
[file @ 0x560ab5fd3c80] Setting default whitelist 'file,crypto,data'
Probing matroska,webm score:100 size:2048
Probing mp3 score:1 size:2048
[matroska,webm @ 0x560ab5fd3400] Format matroska,webm probed with
size=2048 and score=100
st:0 removing common factor 1000000 from timebase
[matroska,webm @ 0x560ab5fd3400] Before avformat_find_stream_info() pos:
718 bytes read:8567 seeks:0 nb_streams:1
[h264 @ 0x560ab5fd60c0] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x560ab5fd60c0] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x560ab5fd60c0] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x560ab5fd60c0] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x560ab5fd60c0] nal_unit_type: 6(SEI), nal_ref_idc: 0
[h264 @ 0x560ab5fd60c0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0x560ab5fd60c0] Format yuv444p chosen by get_format().
[h264 @ 0x560ab5fd60c0] Reinit context to 320x240, pix_fmt: yuv444p
[h264 @ 0x560ab5fd60c0] no picture
[matroska,webm @ 0x560ab5fd3400] All info found
[matroska,webm @ 0x560ab5fd3400] stream 0: start_time: 0 duration: NOPTS
[matroska,webm @ 0x560ab5fd3400] format: start_time: 0 duration: 1
(estimate from stream) bitrate=68 kb/s
[matroska,webm @ 0x560ab5fd3400] After avformat_find_stream_info() pos:
5118 bytes read:8567 seeks:0 frames:4
Input #0, matroska,webm, from 'test.mkv':
Metadata:
ENCODER : Lavf59.16.100
Duration: 00:00:01.00, start: 0.000000, bitrate: 68 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 1.000000
Metadata:
performer : Bob
Stream #0:0, 4, 1/1000: Video: h264 (High 4:4:4 Predictive), 1 reference
frame, yuv444p(tv, progressive, left), 320x240 [SAR 1:1 DAR 4:3], 0/1, 25
fps, 25 tbr, 1k tbn
Metadata:
ENCODER : Lavc59.18.100 libx264
DURATION : 00:00:01.000000000
Successfully opened the file.
At least one output file must be specified
[AVIOContext @ 0x560ab5fdc040] Statistics: 8567 bytes read, 0 seeks
}}}
The test file was produced with `ffmpeg -i metadata -f lavfi -i testsrc -t
1 test.mkv` where `metadata` contains
{{{
;FFMETADATA1
[CHAPTER]
TIMEBASE=1/1000000000
START=0
END=1000000000
LEAD_PERFORMER=Bob
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9812>
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