HI Rob, The OSG uses a chain of responsibility pattern for the plugins and will first attempt to load file by calling all of the currently loaded plugins first, then if it fails then look for the plugin named the same as the file extension, in your case .ogr.
There are also some built in aliases in osgDB::Registry that enables mapping of some extensions to plugins that are known to be supported i.e. flt to the OpenFlight plugin. Not all possibility combinations of extensions are hardwired like this. I'm away from my dev system so can't check up what is set up by default but I don't think there is any specific to ffmpeg hard wired into Registry - the ffmpeg plugin is purely optional part of the OSG and depends on a 3rd part dependency so we generally avoid hard-wiring such mappings in. Have a look in include/osgDB/Registry for the various methods. You can always pre-load the ffmpeg or explictly adding in the extension mapping you want to be recognized by default. Robert. On 23 September 2016 at 20:01, Rob Spearman <r...@digitaliseducation.com> wrote: > > I am trying to understand why osgDB::readImageFile( "abc.ogv" ) does not get > routed to the ffmpeg plugin. I get no image loaded and I see that the > readImage method of the plugin is not even called. > > If I call osgDB::readImageFile( "abc.ogv.ffmpeg" ) it works, but that is not > going to be an acceptable solution. > > I registered the ogv file extension in the plugin with supportsExtension, > and I even added a registry file extension alias as well. I don't believe I > have any conflicting plugins, and even using a new made up file extension I > get the same problem. > > What am I missing here? > > Thanks, > > Rob > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
