For Audio content (audiobook or music) CD quality digital audio source must be submitted. The following formats are supported:
- MP3 files (Encoded at 128kbps or above)
- WAV files
- Physical Audio CDs
For Video content DVD quality digital video source must be submitted. The following formats are supported:
- MP4 files
- Physical DVDs
If closed caption files are available please provide them as DFXP or .scc files.
OverDrive WMA Audiobook titles are converted to Windows® Media® Audio (WMA) files using the Windows Media Series 9 FM quality stereo audio codec. The bit rate is 32kbps with a stereo compression of 22 KHz.OverDrive MP3 Audiobook titles are converted to MP3 files. The bit rate is 64kbps with a stereo compression of 44 KHz.
OverDrive Music titles are converted to Windows® Media® Audio (WMA) files using the Windows Media Series 9.1 codec. The bit rate is 64kbps with a stereo compression of 44KHz.
OverDrive Video titles in the standard format are converted to Windows® Media® Video (WMV) files using the Windows Media Series 9 codec. The bit rate is 723kbps with a stereo compression of 44 KHz. The bit rate for OverDrive Video in the mobile format is 573kbps.
Each codec has been carefully evaluated, and was selected for the balance struck between file quality and file size. These specs are subject to change as new and improved codecs become available.
You can post files to the OverDrive FTP site, or you can ship files to us on CD, DVD, or hard drive. Supported delivery methods vary by content. You will be advised which method is the best for your content.
OverDrive Media Console (OMC) MediaMarkers™ are a navigational ‘value-add’ applied to all audio, video, and music content, and are most similar in functionality to a track/chapter list or a Table of Contents.You will be advised if you need to provide this additional information for your content. We will require this information if your content is non-English or if we are unable to determine appropriate information to use for the MediaMarker™ data from your submitted source. If you have track/chapter lists for your content these make the best source for this information.
Yes, if the files are converted to WMA or WMV.OverDrive WMA Audiobook, OverDrive Music (WMA), and OverDrive Video (WMV) files are protected using the Windows Media DRM digital rights management platform. Windows Media Rights Manager, a component of this platform, uses an encryption algorithm to encrypt your files and lock them with a “key”. This results in a packaged file that only the intended recipient should be able to open.
Additionally, each Windows Media Player is made unique by linking the Player to the host computer. This process reduces the likelihood that a compromised player will be widely distributed on the Internet, as a compromised player can be identified and disabled during the licensing process.
OverDrive also supports the MP3 format for audio content, allowing titles, where permitted by the supplier, to be made available DRM-free.
|Frame Rate||The same rate at which you shot the video. We recommend shooting or encoding at 24 (23.98), 25, or 30 (29.97) fps. If the frame rate is greater than 30 fps, reduce it to 30 fps or lower.|
|Bit Rate||Double the highest bit rate that you intend to display to viewers (e.g., use a 4,000 kbps (kilobits per second) source video if your highest bit rate is 2,000 kbps). If your highest resolution is 1080p, we recommend 15,000 kbps. If your highest resolution is 720p, we recommend 7,500 kbps.|
|Interlacing||If your video is interlaced, deinterlace it before uploading to avoid jagged lines during playback. If the video was recorded as progressive, upload it as is.|
|Keyframes||Set to automatic.|
|Pixels||Encode using isomorphic (square) pixels (1 x 1).|
OverDrive is a registered trademark of OverDrive, Inc. Microsoft, Windows, and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.