ff_mov_cenc_write_sinf_tag 1196 libavformat/movenc.c             && ((ret = ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid)) < 0)) {
ff_mov_cenc_write_sinf_tag 2201 libavformat/movenc.c         ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
ff_mov_cenc_write_sinf_tag   84 libavformat/movenccenc.h int ff_mov_cenc_write_sinf_tag(struct MOVTrack* track, AVIOContext *pb, uint8_t* kid);