Extracts the iso 639-2 language information from descriptor.
Note: Use gst_tag_get_language_code if you want to get the the ISO 639-1 language code from the returned ISO 639-2 one.
the GstMpegtsISO639LanguageDescriptor to fill
TRUE if parsing succeeded, else FALSE.
Extracts the iso 639-2 language information from descriptor.
Note: Use gst_tag_get_language_code if you want to get the the ISO 639-1 language code from the returned ISO 639-2 one.