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A Comparison Of Codecs: Divx Vs. WMV9 Vs. MPEG-2

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1:04 PM - 06/17/2005 by Frank Völkel


The software used in testing the different codecs: Tmpg Encoder from Pegasys. Our test video is available in 16:9 format - the specification of 720x576 pixels (4:3) is incorrect.

A summary comparison of different video compression formats: at an extremely low data rate of 250 kBit/s, Divx 6 and 5.2.1 are unbeatable. The WMV9 codec exhibits obvious blurring. All DVD movies still use MPEG-2, a codec that is outdated and has big problems at lower data rates.
Video Format File Type Bit Rate
Image & Sound
Minimum bit rate
for good quality
Memory needed for
60 min. of film
Standalone DVD player
playback possible
Video quality Dolby Digital
Audio
DV AVI 29000 kBit/s 29000 kBit/s 12700 MB no excellent no
Divx 5.x AVI 10 bis 16000 kBit/s 1500 kBit/s 660 MB yes excellent yes
XviD AVI 10 bis 16000 kBit/s 1500 kBit/s 660 MB yes good yes
MPEG-1 MPG 1374 kBit/s 1374 kBit/s 600 MB no very poor yes
MPEG-2 VOB 1200 bis 9800 kBit/s 6000 kBit/s 2600 MB yes excellent yes
Quicktime MOV 10 bis 32000 kBit/s 1700 kBit/s 750 MB no satisfactory to good no
Windows Media WMV 4 bis 20000 kBit/s 2000 kBit/s 880 MB no good no
Overview and evaluation of the most important video formats.
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