The way to create a fv with comma-separated media ID and level.¶

If you specify comma-separated media ids, each media will appear side by side in sequence from upper left to lower right.

media_id: 51,756,34,78,9,64,13,46,325

Example of the case where various levels are specified.¶

media_id: 11,12,13,14,15,16,17,18,19
level   :  3, 1, 1, 3, 2, 2, 1, 1, 1

As shown in the below figure, fv is filled by some tiles in order from the upper left to bottom right, such as fitting the tile level of the specified media.

• The medias (ID=18,19) are not used in this fv, because it already is exceeding amount of fv size.
• The part of media (id14) which run over fv size is not included in fv.
• If there is overlap part like media id 14 and 16 in the above figure, the media that is specified later will be on.
• If the specified media is not enough, so if the tile is lacking for fv size, black colored tile (media id = 0) is embedded into fv. However you can not purposely specify tile which have media id=0.