Original commit message from CVS:
Add ogg/vorbis support for avi files
#define GST_RIFF_IBM_FORMAT_ADPCM (0x0103)
#define GST_RIFF_WAVE_FORMAT_DIVX (0x0160)
#define GST_RIFF_WAVE_FORMAT_divx (0x0161)
+#define GST_RIFF_WAVE_FORMAT_VORBIS1 (0x674f)
+#define GST_RIFF_WAVE_FORMAT_VORBIS2 (0x6750)
+#define GST_RIFF_WAVE_FORMAT_VORBIS3 (0x6751)
+#define GST_RIFF_WAVE_FORMAT_VORBIS1PLUS (0x676f)
+#define GST_RIFF_WAVE_FORMAT_VORBIS2PLUS (0x6770)
+#define GST_RIFF_WAVE_FORMAT_VORBIS3PLUS (0x6771)
guint16 channels;
guint32 rate;
guint32 av_bps;