Specifications for IMAX Deliverables

SPECIFICATIONS FOR VISUALLY-IMPAIRED/AUDIO DESCRIPTION (AD) FILES:

• .WAV files
• Standard: 24 bit / 48 KHz
• Include 8 seconds of leader at the head and 2-pop at the tail
• Frame Rate: 24-FPS film speed (NOT VIDEO SPEED)
   

SPECIFICATIONS FOR LIBRAS FILES

• .WAV files. We cannot accept MP4 files. We can only accept wav files
• Standard: 24 bit / 48 KHz
• Include 8 seconds of leader at the head
• Frame Rate: 24-FPS film speed (NOT VIDEO SPEED)
   

XML SUBTITLE SPECIFICATIONS:

• XML delivery must adhere to the SMPTE 428-7:2010 or SMPTE 428-7:2014 standard
  • We cannot accept deliveries of SMPTE 428-7:2007 standard
• For 2D, only 4K PNG XML files are acceptable, see attached 2D example 4K PNG XML
• For 3D, only 4K PNG XML files with Z-Axis information are acceptable, see attached 3D 4K example PNG XML
• Timecodes in the file must reflect a start time from 00:00:00:00 as first frame of action, no 8 second leader should be included
• Each reel must have its own XML subtitle file
• Reel number in the “ReelNumber” XML header tag needs to reflect each actual reel number
• Unique UUID for each XML
• Frame rate must be 24fps
• For versions that require more than one language to be on screen at the same time (e.g. Chinese and English), both languages should be contained in the same PNG image
• Filenames should be lowercase and not contain any spaces (use an underscore instead) nor special characters like a period (.)
• We recommend providing a PDF of the dialogue script in conjunction with your delivery
   

Vertical Subtitle Requirements

Depending on the IMAX picture aspect ratio when compared to the non-IMAX picture aspect ratio (regular digital cinema), there will be different requirements for the vertical sub position. Below is the table that outlines them. Prior to a title beginning versioning, IMAX will let the studio or the vendor know what it requires.
 

CCAP SPECIFICATIONS:

• SMPTE 428-7:2010 or SMPTE 428-7:2014 standard Time-Text files, w/font file. For CCAP, we cannot accept PNGs w/ XML.
• Separate font file for each reel.
• Timecodes in the file must reflect a start time from 00:00:00:00 as first frame of action, no 8 second leader should be included.
• Reel number in the “ReelNumber” XML header tag needs to reflect each actual reel number. Unique UUID for each XML
• Frame rate must be 24fps

INDIA SMOKING/DRINKING WARNINGS SPECIFICATIONS:

• Please deliver India smoking and/or drinking warnings as a subtitle XML with timecodes included in the XML that match the specifications for subtitles listed above.
• The warnings should be delivered as a 4K PNG per the above subtitle spec requirements.
• If English subtitles are a requirement for a title’s version release in India, the smoking/drink warnings should be merged with English subtitles as a single XML file.
• If the above requests are not completed, the distributor will be charged $195 per hour for tech labor.
   

KAZAKHSTAN AND RUSSIAN FORCED NARRATIVES SPECIFICATIONS:

• For full feature Kazakhstan subtitles, if IMAX is requested to merge Russian forced narratives with Kazakhstan subtitles, the distributor will be charged $195.