libtheora only requiere >=media-libs/libvorbis-1.0.1 for encoding.
see readme file form libtheora, cut I here
How sugestion add to "USE" player
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Getting started with the code
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*** What do I need to build the source?
Requirements summary:
For libtheora:
libogg 1.1 or newer.
(there is optional support for libogg2, unreleased at this time)
For example encoder:
as above
libvorbis and libvorbisenc 1.0.1 or newer.
For the player only:
as above,
SDL (Simple Direct media Layer) libraries and headers
OSS audio driver and development headers
Reproducible: Always
Steps to Reproduce:
1.
2.
3.