[gstreamer-bugs] [Bug 619300] [qtdemux] mpeg audio version 2 is reported as version 1

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=619300
  GStreamer | gst-plugins-good | git

--- Comment #4 from Josep Torra Valles <n770galaxy at gmail.com> 2010-05-21 15:37:13 UTC ---
This is the related part in the spec ISO/IEC 14496-1:

8.6.6.2   Semantics
The DecoderConfigDescriptor provides information about the decoder type and the
required decoder
resources needed for the associated elementary stream. This is needed at the
receiving terminal to determine
whether it is able to decode the elementary stream. A stream type identifies
the category of the stream while the
optional decoder specific information descriptor contains stream specific
information for the set up of the decoder in
a stream specific format that is opaque to this layer.
ObjectTypeIndication – an indication of the object or scene description type
that needs to be supported by
the decoder for this elementary stream as per Table 8. For streamType values
other than audioStream and
visualStream, the objectTypeIndication shall be set to 0xFF, indicating that no
object type is specified.
                                       Table 8 - objectTypeIndication Values
                Value                ObjectTypeIndication Description
                0x00                 Forbidden
                                                                 a
                0x01                 Systems ISO/IEC 14496-1
                                                                 b
                0x02                 Systems ISO/IEC 14496-1
                0x03-0x1F            reserved for ISO use
                                                               c
                0x20                 Visual ISO/IEC 14496-2
                0x21-0x3F            reserved for ISO use
                                                               d
                0x40                 Audio ISO/IEC 14496-3
                0x41-0x5F            reserved for ISO use
                0x60                 Visual ISO/IEC 13818-2 Simple Profile
                0x61                 Visual ISO/IEC 13818-2 Main Profile
                0x62                 Visual ISO/IEC 13818-2 SNR Profile
                0x63                 Visual ISO/IEC 13818-2 Spatial Profile
                0x64                 Visual ISO/IEC 13818-2 High Profile
                0x65                 Visual ISO/IEC 13818-2 422 Profile
                0x66                 Audio ISO/IEC 13818-7 Main Profile
                0x67                 Audio ISO/IEC 13818-7 LowComplexity
Profile
                0x68                 Audio ISO/IEC 13818-7 Scaleable Sampling
Rate Profile
                0x69                 Audio ISO/IEC 13818-3
                0x6A                 Visual ISO/IEC 11172-2
                0x6B                 Audio ISO/IEC 11172-3
                0x6C                 Visual ISO/IEC 10918-1
                0x6D - 0xBF          reserved for ISO use
                0xC0 - 0xFE          user private
                0xFF                 no object type specified

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