When I go to encode video files to flash (.flv) I am faced with choosing the on2 vp6 codec or the sorenson spark codec. I have noticed that the on2 vp6 codec looks substantially better, but also yields slightly larger files.
I was just wondering if there are any major differences or reasons as to which one I should be using? Does one offer more compatibility for some reason?
VP6 replaced Spark quite a while back. As you've seen VP6 is higher quality and most people encoding to Flash are using it.
That said, YouTube still uses Spark but is moving towards the new Flash standard of H.264.
Bottom line is use VP6 until we all move to H.264.