Searching on google for "gstreamer marvell" or "gstreamer vmetadec" produces nothing and certanly this plugin doesn't appear on default gstreamer plugins list
So what's the history of this plugin (who is writing it?) and where can i find doc about it? I would like to know what kind of formats it decodes (h264? mpeg4? mpeg2? vorbis?). Does it support encoding? There are other plugins thant the decoder/encoder like a videosink and/or a postprocess? What format does the decoder output? Etc etc.
One should be able to easily find this kind of informations.