Media Formats

Media is used in Question Sets and can cover multiple different types:

• Images
• Audio Clips
• Video Clips
• PDF Documents

In order for the media to display correctly it must adhere to the following specifications.

Image Specifications

Image File Type

• PNG - PNG is the recommended image type for graphic images due to the high quality compared to file size

• JPG - JPG is the recommended format for photo images or when PNG is not suitable when reduced file size is required

Image Sizes

All images should be provided in fullscreen size.

• Fullscreen W1920 x H1080

For reference, the following image sizes are used and are automatically converted from the fullscreen image size to cater to different device resolutions.

• Large - W1280 x H720
• Medium - W640 x H360
• Small - W480 x H270

Example of a 1920 x 1080 image (16:9 ratio)

Example of a cropped image maintaining the image width of 1920

Image Aspect Ratio

• All mages can have any aspect ratio, however, 16:9 or 4:3 are recommended as they work best for mobile viewing

Audio Specifications

Audio Types

• Mp3 - mp3 is the accepted format type for audio based on the high-quality file size and the ability to be supported on mobile devices.

Minimum Audio Quality Settings

• Sample Rate - 44kHz

• Bits per sample - 32

• Bitrate - 64 kb/s

• Channels - Stereo

• Codec: MPEG Audio layer 1/2 (mpg)

Video Specification

Video files are to be loaded to Youtube and the following types are accepted.

Video Types

• mp4 - mp4 video is the recommended format type due to the high-quality file size and the ability to be supported on mobile devices.

• mov - mov video is also an acceptable format type however it is a proprietary Apple file format for QuickTime and is often higher in quality and larger in size than mp4 videos.

All video files should be provided as a single file per question part. Where voiceovers are used in videos, all audio sub-files must be merged into a single complete video file for upload.

Minimum Video Settings

• Codec - H264 MPEG-4 AVC

• Video Resolution - 1280 x 720 High Definition

• Frame Rate - 24

• Audio - MPEG AAC mp4a, stereo, 44kHz sample rate, 32 bits

Video Custom Thumbnail Image

Where a custom video thumbnail image is required it should be provided as large as possible. It will be used as the preview image in the embedded player.

We recommend custom thumbnails:

• have a resolution of 1280x720 (with a minimum width of 640 pixels).

• be provided in image formats such as JPG, PNG, or GIF.

• remain under a 2 MB file size.

• try to use a 16:9 aspect ratio as it's the most used in video players and previews.

PDF Documents

Links to PDF Documents on public or company websites should follow standard HTML URL naming standards and should be accessible by any public user.

• Links to PDF Documents on public websites should follow standard HTML URL naming standards and should be accessible by any public user
• Links to PDF Documents on company-authenticated websites should provide the typical share URL of the system and should be accessible by any authenticated user
• Links should not contain spaces or other characters not recognised as valid links

General File Sizing Guide

Files sizes should be kept to a minimum whilst maintaining quality. The following is a guide to approximate file sizing per media type