Flash Video Encoder User Guide

Flash Video Encoder User Guide > Supported video compression codecs for Flash Video > Comparing the On2 VP6 and Sorenson Spark video codecs

Comparing the On2 VP6 and Sorenson Spark video codecs

The On2 VP6 codec is the default video codec to use when encoding FLV content for use with Flash Player 8 or later. Using the On2 VP6 codec provides the following advantages when compared to the Sorenson Spark codec:

• Encodes higher quality video at the same data rate
• Supports the use of an alpha channel to create composite video

In order to support better quality video at the same data rate, the On2 VP6 codec is noticeably slower to encode and requires more processor power on the client computer to decode and play back the video data. For this reason, you should consider the lowest common denominator of computer that your audience will use when they access your Flash video content.

If you anticipate a large user base that is using older computers, it may be advisable to consider encoding your FLV files using the Sorenson Spark codec.

Flash CS3