#4 closed defect (invalid)
MP3 file with unsynchronised id3v2 tag is not read correctly
Reported by: | Carl Eugen Hoyos | Owned by: | Michael Niedermayer |
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Priority: | normal | Component: | avformat |
Version: | git | Keywords: | mp3 id3v2 roundup |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | yes |
Description
(issue 2650)
FFmpeg does support unsynchronisation in id3v2 tags, but only in tags starting with "T". Attached sample is unsynchronised in MCDI tag, making it impossible to read the remaining id3v2 tags that can be read if I remove the inserted byte (or patch id3v2.c to skip it).
(Additionally, the OP reported that the VBR tag can not be read in this file.)
ffmpeg -i b.mp3 FFmpeg version git-N-27871-gcc4d3dd, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 8 2011 20:24:27 with gcc 4.5.2 configuration: --cc=/usr/local/gcc-4.5.2/bin/gcc --enable-gpl libavutil 50. 39. 0 / 50. 39. 0 libavcodec 52.113. 2 / 52.113. 2 libavformat 52.102. 0 / 52.102. 0 libavdevice 52. 3. 0 / 52. 3. 0 libavfilter 1. 76. 0 / 1. 76. 0 libswscale 0. 12. 0 / 0. 12. 0 [mp3 @ 0x11eb440] Header missing [mp3 @ 0x11e8650] max_analyze_duration reached [mp3 @ 0x11e8650] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from 'b.mp3': Metadata: title : Sound Of Letting Go artist : David Guetta & Tocadisco feat. Chris Willis album : One Love TYER : 2009 track : 13/16 Duration: 00:24:16.38, start: 0.000000, bitrate: 32 kb/s Stream #0.0: Audio: mp3, 44100 Hz, stereo, s16, 32 kb/s At least one output file must be specified
With the 259th byte removed four additional tags are shown:
ffmpeg -i t.mp3 FFmpeg version git-N-27871-gcc4d3dd, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 8 2011 20:24:27 with gcc 4.5.2 configuration: --cc=/usr/local/gcc-4.5.2/bin/gcc --enable-gpl libavutil 50. 39. 0 / 50. 39. 0 libavcodec 52.113. 2 / 52.113. 2 libavformat 52.102. 0 / 52.102. 0 libavdevice 52. 3. 0 / 52. 3. 0 libavfilter 1. 76. 0 / 1. 76. 0 libswscale 0. 12. 0 / 0. 12. 0 [mp3 @ 0x11e9710] Header missing [mp3 @ 0x11e8650] max_analyze_duration reached [mp3 @ 0x11e8650] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from 't.mp3': Metadata: title : Sound Of Letting Go artist : David Guetta & Tocadisco feat. Chris Willis album : One Love TYER : 2009 track : 13/16 TLEN : 225986 genre : Bance encoded_by : Exact Audio Copy (Secure mode) encoder : LAME.EXE -V 2 --vbr-new Duration: 00:24:16.38, start: 0.000000, bitrate: 32 kb/s Stream #0.0: Audio: mp3, 44100 Hz, stereo, s16, 32 kb/s At least one output file must be specified
Attachments (1)
Change History (3)
by , 14 years ago
Attachment: | id3v2unsync.mp3 added |
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comment:1 by , 14 years ago
Resolution: | → invalid |
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Status: | new → closed |
comment:2 by , 12 years ago
Keywords: | mp3 id3v2 roundup added |
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The id3v2 tag is invalid, reading the VBR tag was fixed by Anton Khirnov.