We're outputting a bunch of 30 minutes shows for a client. We've settled on sizes, frame rates, data rates etc. But now their web developer is telling us while the videos load and play great (mp4 via progressive download in Flash Player), but that they don't playback as smooth as they should. We're not sure what they mean when they say "they play great"...then say they "don't play smoothly" and we've askd for a link to the test site to see, but we haven't seen them yet.
They're asking us to encode with more keyframes (shorter time between them). Everything I've read on Adobe and StreamingMedia.com's sites has led me to believe that you want your keyframe rate as far apart as possible. 150 is the number that Jan Ozer and other compression gurus's mention using for mp4 and flash.
Is there a consensus on this?? We typically set it fairly high and have never had anyone complain about playback issues prior to this, or tell us anything as specific as changing a keyframe setting.
That's exactly what we were going to try. Good to know I was thinking correctly. And we said the same thing on the playback comments. We did tests with the videos using flash player from our website and they played great. So not exactly sure what they're seeing. Hopefully they'll send us a link.