[FFmpeg-trac] #6917(undetermined:new): Seeking in AVI file with mp3 audio throws errors during decoding.

FFmpeg trac at avcodec.org
Tue Jan 30 00:37:52 EET 2018


#6917: Seeking in AVI file with mp3 audio throws errors during decoding.
-------------------------------------+-------------------------------------
             Reporter:  dalecurtis   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  avi mp3      |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by dalecurtis):

 FFmpeg seems to balk at the APEv2 tag:

 "[mp3 @ 0x21fa4c0] Audio packet of size 206 (starting with 41504554...) is
 invalid, writing it anyway."
 00379f20  aa aa aa 41 50 45 54 41  47 45 58 d0 07 00 00 ae
 |...APETAGEX.....|
 00379f30  00 00 00 04 00 00 00 00  00 00 a0 00 00 00 00 00
 |................|
 00379f40  00 00 00 07 00 00 00 00  00 00 00 4d 50 33 47 41
 |...........MP3GA|
 00379f50  49 4e 5f 4d 49 4e 4d 41  58 00 31 32 30 2c 32 30
 |IN_MINMAX.120,20|
 00379f60  38 0b 00 00 00 00 00 00  00 4d 50 33 47 41 49 4e
 |8........MP3GAIN|
 00379f70  5f 55 4e 44 4f 00 2b 30  30 32 2c 2b 30 30 32 2c
 |_UNDO.+002,+002,|
 00379f80  4e 0c 00 00 00 00 00 00  00 52 45 50 4c 41 59 47
 |N........REPLAYG|
 00379f90  41 49 4e 5f 54 52 41 43  4b 5f 47 41 49 4e 00 2d
 |AIN_TRACK_GAIN.-|
 00379fa0  32 2e 30 31 30 30 30 30  20 64 42 08 00 00 00 00  |2.010000
 dB.....|
 00379fb0  00 00 00 52 45 50 4c 41  59 47 41 49 4e 5f 54 52
 |...REPLAYGAIN_TR|
 00379fc0  41 43 4b 5f 50 45 41 4b  00 30 2e 36 36 30 32 36
 |ACK_PEAK.0.66026|
 00379fd0  36 41 50 45 54 41 47 45  58 d0 07 00 00 ae 00 00
 |6APETAGEX.......|

 It seems to have trouble with that APE tag,
 https://en.wikipedia.org/wiki/APE_tag

 So this may be a separate issue after all.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6917#comment:11>
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