Group name of the codec implementation.
This is a short symbolic name of the wrapper backing this codec. A
wrapper uses some kind of external implementation for the codec, such
as an external library, or a codec implementation provided by the OS or
the hardware.
If this field is NULL, this is a builtin, libavcodec native codec.
If non-NULL, this will be the suffix in AVCodec.name in most cases
(usually AVCodec.name will be of the form "<codec_name>_<wrapper_name>").
Group name of the codec implementation. This is a short symbolic name of the wrapper backing this codec. A wrapper uses some kind of external implementation for the codec, such as an external library, or a codec implementation provided by the OS or the hardware. If this field is NULL, this is a builtin, libavcodec native codec. If non-NULL, this will be the suffix in AVCodec.name in most cases (usually AVCodec.name will be of the form "<codec_name>_<wrapper_name>").