Issue by cchampet
Wednesday Jan 14, 2015 at 16:14 GMT
Originally opened as mikrosimage#50

They should contain an AVCodecContext.
And next use avcodec_copy_context [http://ffmpeg.org/doxygen/trunk/group__lavc__core.html#ga3933b21b9dcb9173df3e56673b7a7d76] to set the encoder