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 | 
