The libswresample context. Unlike libavcodec and libavformat, this structure is opaque. This means that if you would like to set options, you must use the @ref avoptions API and cannot directly set values to members of the structure.
See Implementation
The libswresample context. Unlike libavcodec and libavformat, this structure is opaque. This means that if you would like to set options, you must use the @ref avoptions API and cannot directly set values to members of the structure.