Encoding Specifications for iTunes U and YouTube

iTunes U Encoding Specifications

Audio:

Unedited – .AIFF or .WAV (uncompressed)
Edited – 256 kbps .mp4 (AAC) stereo audio with voice filtering or 320 kbps .mp3 stereo audio

4:3 Video:

Standard Resolution Edited Video (VGA):
H.264 .mp4: 30 fps, 640×480, 3000 kbps bitrate, progressive encoding and 256 kbps AAC audio

16:9 Video

Standard Resolution Edited Video (VGA):
H.264 .mp4: 30 fps, 640×360, 3000 kbps bitrate, progressive encoding and 256 kbps AAC audio
High Definition Edited Video (720p):
H.264 .mp4: 24-60 fps, 1280×720, 5000 kbps bitrate, progressive encoding and 256 kbps AAC audio
Full Resolution Intermediate Codecs including ProRes 422

YouTube Encoding Specifications

4:3 Video

Standard Resolution Edited Video (VGA):
H.264 .mp4: 30 fps, 640×480, 3000 kbps bitrate, progressive encoding and 256 kbps AAC audio

16:9 Video

Standard Resolution Edited Video (VGA):
H.264 .mp4: 30 fps, 640×360, 3000 kbps bitrate, progressive encoding and 256 kbps AAC audio
High Definition Edited Video (720p):
H.264 .mp4: 24-60 fps, 1280×720, 5000 kbps bitrate, progressive encoding and 256 kbps AAC audio
Full Resolution High Definition Edited Video (1080p):
Apple Pro-Res 422 .mov file
Full Resolution Intermediate Codecs including ProRes 422