About video formats

General information about video

Without doubt, the most confusing thing about using video on the web is the profusion of formats. With ordinary images there also a large number of formats but there are a few widely used formats which all software, and all web browsers, can use: gif, jpg and png. Video formats are, however, still evolving and changing rapidly.

For information about different formats, and what they mean, see these links:

Best formats to use

The CDU Teaching4Learning site has the following recommendations for video Learnline:
  • QuickTime video file (.mov)
  • MPEG 4 (.mp4)

Movie file setting for downloading

  • Window size: 320 x 240 (3:4)
  • Data rate: 200 kb/s
  • File extensions: .mov or .mp4
  • Codec: AAC, Stereo, 44.100 kHz (audio)
  • MPEG4 (movie) - H264 is also know as MPEG4 part 10
  • File size: Maximum 2megabytes per minute

YouTube recommendations

YouTube says the following: "YouTube can accept almost any video format for upload, but for most users we have found the following settings give the best results."
  • Video Format: H.264, MPEG-2 or MPEG-4 preferred
  • Aspect Ratio: Native aspect ratio without letterboxing (examples: 4:3, 16:9)
  • Resolution: 640x360 (16:9) or 480x360 (4:3) recommended
  • Audio Format: MP3 or AAC preferred
  • Frames per second: 30
  • Maximum length: 10 minutes (we recommend 2-3 minutes)
  • Maximum file size: 1 GB