Hi, I have just made a patch to support skeleton output in oggenc. The feature is disabled by default and can be enabled by using either -k or --skeleton switch. You can find the patch attached with the following ticket http://trac.xiph.org/ticket/1008 MikeS or anyone with detail knowledge of oggenc. I changed the oe_options and oe_enc_options data structure. Let me know if there's a problem with that. Also you may try checking if the serialno for skeleton bitstreams are handled properly if multiple files are given in the input. I think I handled it properly but just in case :) I am using a very simple API for generating skeleton packets which is contained in skeleton.h and skeleton.c. I will appreciate any bug report or suggestion on the API. Thanks for your feedback in advance. --tahseen