[Bug 207576] New: no metadata found for some mp3s and oggs

[Will Stephenson]

https://bugs.kde.org/show_bug.cgi?id=207576

           Summary: no metadata found for some mp3s and oggs
           Product: kfile-plugins
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: unspecified
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: ogg
        AssignedTo: kde-multimedia at kde.org
        ReportedBy: wstephenson at kde.org


Version:            (using Devel)
Installed from:    Compiled sources

Eg in the file overwrite dialog shown by Dolphin.

This is because for some files, the metainfo is at the end of the file, which
we do not handle atm.

There is no header at the start of the file saying how long the data is to seek
to where the metadata is, the trailing x bytes are the info, so you need to
read to the end to know where the info starts. and then there might be no info
(95% of cases i think).  

A kfile implementation should start by checking that it is a real file and not
a stream: open file, go to end, go back x bytes, check if data matches metadata
format, etc.

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