ff_mpeg4_encode_picture_header  164 libavcodec/mpeg4video.h int ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
ff_mpeg4_encode_picture_header 3890 libavcodec/mpegvideo_enc.c             ret = ff_mpeg4_encode_picture_header(s, picture_number);