Convert audio and video for ebook

Convert Video

For both Mac and Windows, we recommend you use a tool such as MPEG Streamclip, available for free from Squared 5 and not affiliated with Blurb.

You'll want to use a tool to export your file to MPEG-4 with the following options:

  • Frame rate: 24
  • Frame size: Select an option that displays (unscaled)
    If your frame size is larger than 640x480, Blurb suggests selecting either 480x360 for (4:3) content or 640x360 for (16:9) content, to ensure successful playback on all iPhone and iPad devices.
  • Quality: The higher the quality, the larger the file size. Experiment with what looks best inside your ebook, but the minimum should be at least 50%.
  • Interlaced scaling: Uncheck this option

Video Overview

  • File Formats Supported: MP4 or M4V
  • Codec: H.264
  • Maximum Bitrate: 5 Mbps
  • Maximum Dimensions: 1920x1080
  • Maximum Frame Rate: 30 fps
  • If your frame size is larger than 640x480, Blurb suggests selecting either 480x360 for (4:3) content or 640x360 for (16:9) content, to ensure successful playback on all iPhone and iPad devices.

Convert Audio

On a Mac

To convert your audio, we recommend that you use the free program, QuickTime, from Apple. Open your audio file inside QuickTime and then export it as format Audio Only.

On a PC

To convert your audio on a PC, we recommend that you use the free program, iTunes, from Apple to create an AAC version.

Use of MPEG Streamclip, QuickTime, and iTunes is at the user's discretion. Blurb does not provide technical support for these services.

Audio Overview

  • File Format Supported: M4A
  • Codec: AAC
  • Maximum Sample Rate: 48 khz
  • Channels: 2 (stereo)
  • Maximum Bitrate: 256 Kbps 

 




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