[FFmpeg-trac] #11354(avformat:closed): Certain PlayStation STR complained "Invalid data"

[FFmpeg]

#11354: Certain PlayStation STR complained "Invalid data"
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             Reporter:  Joseph       |                    Owner:  (none)
  DeVore                             |
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:  invalid
             Keywords:  psxstr       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  1            |
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Changes (by MasterQuestionable):

 * resolution:   => invalid
 * status:  new => closed

Comment:

 ͏    The information is regardless valuable.
 [[
 ͏    Each sector on a CD is 2,352 Bytes.
 ͏    A data track on a PlayStation CD follows the CD-ROM XA standard:
 ͏    https://en.wikipedia.org/wiki/CD-ROM#XA
 ͏    .
 ͏    Where there are 2 types of sectors:
 ͏    |1| Mode 2 Form 1:
 ͏    Uses 2,048 of those 2,352 bytes for data; and the rest for things
 like error correction.
 ͏    This form is used for most data: because CD are unreliable and that
 error correction is really important, if it's something like code.
 ͏    |2| Mode 2 Form 2:
 ͏    Uses 2,324 of those 2,352 bytes for data: getting rid of the error
 correction in exchange for more space.
 ͏    Generally used for compressed audio where small errors are not a big
 deal.

 ͏    So, most files on a PlayStation disc will use Mode 2 Form 1:
 ͏    With Mode 2 Form 2 only used for compressed audio, either on its own
 or within a video file.
 ͏    So each of those STR files contains a mix of those 2 sector types.

 ͏    The problem you're running into is that:
 ͏    DuckStation's ISO browser simply dumps 2,048 Bytes of data for every
 sector, regardless of what type it is.
 ͏    Whereas FFmpeg actually wants the full raw 2,352 Bytes sectors.

 ͏    Try dumping the files with jPSXdec instead.
 ]]
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Ticket URL: <https://trac.ffmpeg.org/ticket/11354#comment:10>
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