BITMAP_ID         267 libavformat/swfenc.c         put_le16(pb, BITMAP_ID); /* bitmap ID */
BITMAP_ID         390 libavformat/swfenc.c             put_le16(pb, BITMAP_ID);
BITMAP_ID         396 libavformat/swfenc.c         put_le16(pb, BITMAP_ID); /* ID of the image */