Encoding WebM videos seems really slow. What are you doing about that?
For the Developer Preview we focused on optimizing the VP8 decoder. Today, encoding VP8 in “best quality” mode is the slowest configuration. Using “good quality” mode with the speed parameter set between 0 and 5 will provide a range of speeds. Best Quality is admittedly slow. We have room for great improvement on both the encoder and the decoder. We have only begun to optimize the VP8 encoder and believe that we will make very substantial speed improvements soon — especially with your help!