ff_mov_cenc_init 6574 libavformat/movenc.c             ret = ff_mov_cenc_init(&track->cenc, mov->encryption_key,
ff_mov_cenc_init   53 libavformat/movenccenc.h int ff_mov_cenc_init(MOVMuxCencContext* ctx, uint8_t* encryption_key, int use_subsamples, int bitexact);