The University of Texas at Austin- What Starts Here Changes the World
Services Navigation
  UT Home -> Web Video Guidelines -> Compression Examples
       
Collapse Menu

Web Video Guidelines

 

Pre-Production Planning

 

Production

 

Post-Production

 

Captioning Guidelines

  Expand Menu

Publishing at UT

 

Accessibility

 

Compression Examples

 

Glossary



Compression Examples

This document is a matrix of compressed digital video clips in Real, QuickTime, and Windows Media formats. These three formats are supported and used at the University of Texas at Austin. The intent is to provide best practices and techniques used for compressing digital video for Web distribution.

The clips used include Introduction to Photojournalists (called intro, 3:33) and an interview with photojournalist David Hume Kennerly (called interview, 01:34). Special thanks to UTOPIA for allowing us to use these clips.

These videos are the property of the University of Texas at Austin and cannot be duplicated, distributed or reproduced.

Very High Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size
intro1.rm 1500 kbps 1068 kbps
RealVideo 9
132 Kbps Stereo Music RealAudio 8- ATRAC3-44.100 kHz 32 MB 30 640X480
intro2.rm 1000 kbps (SureStream) 823.6/609.9 kbps
RealVideo 9
176/146 Kbps Stereo Music-RA 8(ATRAC3) 44.100 kHz 47 MB 30 640X480
intro1.wmv 1200 kbps Windows Media Video 7 Windows Media Video 7; 44.100 kHz; 128 kbps; stereo 31 Mb 30 640X480
intro2.wmv 1000 kbps Windows Media Video 7 Windows Media Video 7; 44.100 kHz; 128 kbps; stereo 25 Mb 30 640X480
intro2.mov 1000 kbps Sorenson Video 3 MPEG3 Audio, Mono; 32 kHz 228 Mb 39 640X480
intro1.swf 1500 kbps Sorenson Spark Pro
(750 Kbps / Key 60)
Fraunhofer MP3
(96 Kbps)
21.7 Mb 29.97 640X480
(320X240 scaled)
intro2.swf 1500 kbps Sorenson Spark Pro
(750 Kbps /Key 60)
Fraunhofer MP3
(96 Kbps)
21.7 Mb 29.97 320X240

 

High/Mid Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size

intro3.rm

512 kbps (SureStream) 336/224 kbps
RealVideo 9
64 kbps Stereo Music-RA 8 44.100 kHz/ 32 kbps Voice RealAudio G2 22.050 kHz
17 Mb 30 320X240
intro3.wmv 512 kbps 336 kbps, Windows Media Video 7 Windows Media Video 7; 44.100 kHz; 64 kbps; stereo 10 Mb 30 320X240
intro4.wmv 256 kbps 227 kbps, Windows Media Video 7 Windows Media Video 7; 32 kHz; 32 kbps; stereo 7 Mb 30 320X240
intro3.mov 500 kbps Sorenson Video 3 MPEG-4 Audio; 44 kHz; mono 18 Mb 15 320X240
intro3.swf 384 kbps Sorenson Spark Pro
(329 Kbps / Key 30)
Fraunhofer MP3
(32 Kbps)
9.3 Mb 15 320X240

Back to the Top

Low Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size
intro4.rm 56 kbps (SureStream) 39.6/16.0 kbps
RealVideo 9
8 Kbps Music (RealAudio G2) 8.000 kHz/
85 kbps Voice (RealAudio 4) 8.000 kHz
2 MB 15/10 240X180
intro5.rm 56 kbps (SureStream) 39.6/17.6 kbps
RealVideo 9
85 kbps Voice (RealAudio 4)/8.000 kHz
65 kbps Voice (RealAudio 4 ) 8.000 kHz
2 Mb 15/10 160X120
intro5.wmv 56 kbps Windows Media Video 7 Windows Media Video 7; 11.025 kHz; 10 kbps; mono 1 Mb 10 160X120
intro6.wmv 56 kbps Windows Media Video 7 Windows Media Video 7; 8.000 kHz; 8 kbps; mono 1 Mb 10 160X120
intro4.mov 70 kbps Sorenson Video 3 MPEG-4 Audio;11.025 kHz; mono 2 Mb 7 240X180
intro4.swf 56 kbps Sorenson Spark Pro
(40 Kbps / Key 20)
Fraunhofer MP3
(8 Kbps)
1.3 Mb 10 192X144

Back to the Top


Very High Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size
interview1.rm 1200 kbps 1068 kbps
RealVideo 9
132.3 kbps Stereo Music RealAudio 8- ATRAC3-44.100 kHz 14 Mb 30 fps 640X480
interview2.rm 1000/768 kbps (SureStream) 823.6/609.9 kbps
RealVideo 9
176/146 kbps Stereo Music-RA 8(ATRAC3) 44.100 kHz 21 MB 30 fps 640X480
interview1.wmv 1200 kbps Windows Media Video 7 Windows Media Video 7; 44.100 kHz; 128 kbps; stereo 13 Mb 30 640X480
interview2.wmv 1000 kbps Windows Media Video 7 Windows Media Video 7; 44.100 kHz; 128 kbps; stereo 11 Mb 30 640X480
interview1.mov 1600 kbps Sorenson Video 3 MPEG-3 Audio;44.1 kHz; mono 155 Mb 30 640X480
interview2.mov 1000 kbps Sorenson Video 3 MPEG-3 Audio;32 kHz; mono 99 Mb 30 640X480
interview1.swf 1500 kbps Sorenson Spark Pro
(750 Kbps /Key 60)
Fraunhofer MP3
(96 Kbps)
9.7 Mb 30 640X480
(320X240 scaled)
interview2.swf 1500 kbps Sorenson Spark Pro
(750 Kbps / Key 60)
Fraunhofer MP3
(96 Kbps)
9.7 Mb 30 320X240

Back to the Top

High/Mid Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size

interview3.rm

512/256 kbps (SureStream) 336/224 kbps
RealVideo 9
64 kbps Stereo Music-RA 8; 44.100 kHz;
32 kbps Voice RealAudio G2 22.050 kHz
7 Mb 30 fps 320X240
interview3.wmv 512 kbps Windows Media Video 7 (video data rate limit of 300 kbps) Windows Media Video 7; 44.100 kHz; 64 kbps; stereo 4 Mb 30 320X240
interview4.wmv 256 kbps Windows Media Video 7 (video data rate limit of 200 kbps) Windows Media Video 7; 32 kHz; 32 kbps; stereo 3 Mb 30 320X240
interview3.mov 500 kbps Sorenson Video 3 MPEG-4 Audio; 44.1 kHz; mono 8 Mb 15 320X240
interview3.swf 384 kbps Sorenson Spark Pro
(329 Kbps / Key 30)
Fraunhofer MP3 4.3 Mb 15 320X240

Back to the Top

Low Bandwidth
Clip Total Target Bandwidth Video Codec & Bandwidth AudioCodec & Bandwidth File size Frame rate Display size
interview4.rm 56/33.6 kbps (SureStream) 39.6/16.0 kbps
RealVideo 9
8.5 kbps Voice (RealAudio 4) 8.000 kHz/
8 kbps Music (RealAudio G2) 8.000 kHz
1 MB 15/10 fps 240X180
interview5.rm 56/33.6 kbps (SureStream) 39.6/17.6 kbps
RealVideo 9
8.5 kbps Voice (RealAudio 4) 8.000 kHz/
6.5 kbps Voice (RealAudio 4) 8.000 kHz
1 Mb 15/10 fps 160X120
interview5.wmv 56 kbps Windows Media Video 7; video data rate limit of 38 kbps Windows Media Video 7; 11.025 kHz; 10 kbps; mono 600 k 10 160X120
interview6.wmv 56 kbps Windows Media Video 7 Windows Media Video 7; 8.000 kHz; 8 kbps; stereo 480 k 10 160X120
interview4.mov 50 kbps Sorenson Video 3 MPEG-4 Audio; 11.025 kHz; mono 1 Mb 7.25 240X180
interview4.swf 56 kbps Sorenson Spark Pro
(40 Kbps / Key 20)
Fraunhofer MP3
(8 Kbps)
616 kb 10 192X144

Back to the Top


  Updated January 30 2008
  Copyright | Privacy | Accessibility | Real Player | WindowsMedia Player | QuickTime Player | Flash
  Comments to UT Austin Digital Video Producers