• Science Slideshow

Fulldome File Specifications

Test grid 18

 

 

The “Dome Master” refers to the individual images that are sliced, encoded, or otherwise processed to make a playable files for use in the host facility’s fulldome system.

Only circular dome masters (i.e., a square source frame) are accepted. The circle contains the projected image.

The geometry of the dome master should be as follows:

The region not covered by the image circle (active pixel area) should be colored black (except for time and frame data), user-defined show name, timecode, and frame number text. displayed in upper left-hand corner, with show name in an opposite corner.

Geometry – equidistant azimuthal “fisheye” render representing a hemisphere, with bottom of the frame representing the front bottom of the dome screen, and the right and left hand sides of the dome master corresponding with the respective right and left sides of the dome to a viewer sitting at dome center within the theater. Top and sides of polar image are tangent to edges of image frame.

Other design recommendations:
Unidirectional “Safe Action” area approx. ±50° longitude (measured from dome front/center), and ranging from 10–60° latitude (altitude)
Nominal camera tilt of 15° great circle (cf. reference frame)

Recommended file formats: sequentially numbered lossless files — e.g., PNG, TARGA with RLE compression other sequentially numbered files — e.g., JPEG at highest-quality setting

Recommended file name format — e.g., “Name_000001.jpg”

Recommended folder name format “filename_000001_010,000”

Color Bit Depth — e.g., 8, 10, or 12 bits/color

Frame Size, frame must be square, with standard diameter resolutions of 720x720, 1024x1024, 1536x1536, 2048x2048, 3200x3200, 3600x3600, 4096x4096.

Recommended frame rate — 30 fps
Other frame rates — 24 fps, 25 fps, 29.97 fps, 30 fps, 48 fps, 59.94 fps, 60 fps
Please clearly indicate the frame rate on the file name and drive if it is not 30FPS!

AUDIO FORMAT
Surround Format – stereo files, or 5.1, or 7.1 files
File Format – e.g., mono channels; WAV, AIFF
Sampling Frequency and bit depth — e.g., 48-kHz 16-bit
Frame rate for video sync — e.g., 25, or 30 fps
Start frame of either “01:00:00:00” or “00:00:00:01”
The first second of audio must match the first corresponding video frames. NO pip or black tails in or out, please. 
All files need to be appropriately labeled via basic audio file naming convention for discrete channels
Front Left: filename_L.wav
Front Right: filename_R.wav
Rear Left Surround: filename_Ls.wav
Rear Right Surround: filename_Rs.wav
Center Front: filename_C.wav
Low-frequency channel (Sub-bass): filename_LFE.wav

PHYSICAL MEDIA:
USB Hard Drive or Flash Drive, NTFS format ONLY. Volume label should be the Producer’s Name, e.g. “My Show Drive”(G:)
NOTE: Please note that we cannot accept files via file transfer over the Internet without prior authorization.
Label the drive with your contact information, producer name, address, and name of show. Drives will be available for pickup during the Summit. Please include return instructions and return airbills if you will NOT be attending the Summit.
Please include an HD resolution .mov or QT preview of your film so we can verify proper playback after encoding.
Please include a .jpg poster image frame that is representative of your film at least 400 pixels wide by 600 pixels tall for our event promotion.

FILE PREPARATION
Prepare the files with a folder for each piece of content: frames, audio, etc. In addition to dome master sequences, we request an HD resolution .mov or QT preview of your submitted content. We also request a .jpg poster image frame that is representative of your submission. It should be at least 400 pixels wide by 600 pixels tall for our event promotion. Also include a readme.txt with any special instructions or comments that we will need in order to encode your content properly. The title of the show should be in the readme.txt name, e.g. “STARSHOW_README.txt”

FILE STRUCTURE ON THE DRIVE
PRODUCERNAME (G:)
FOLDER: Title of Show
SHOW_TITLE_README.txt
Subfolder: frames,
(Number frames beginning with 0. This includes full-length shows as well as clips.)
Subfolder: video
Title_show.mov
Subfolder: Audio
filename_L.wav
filename_R.wav
Rfilename_Ls.wav
filename_Rs.wav
filename_C.wav
filename_LFE.wav
Subfolder: poster
Title_show_.tif (or other graphics format)

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