[gstreamer-bugs] [Bug 345352] New: Indicate what meta data tags a pipeline supports.

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gstreamer (core) | Ver: HEAD CVS

           Summary: Indicate what meta data tags a pipeline supports.
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: mail at renestadler.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


There is currently no way to find out if a particular pipeline will be able to
write out all meta data tags that are passed to it.  Meta data can be silently
lost currently, for example if an app allows user-supplied backends (to support
arbitrary output formats, of which not all might have support for all types of
meta data).

Another use case applies to using analyzers like TRM (musicbrainz
fingerprinting) or ReplayGain.  Applications could disable such extra
processing if the results cannot be saved in the output.

Current state of affairs seems to be that encoders/muxers silently ignore any
unsupported tags they encounter during iteration of passed tag lists.


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