On Fri, 7 Jan 2005, Steven M. Schultz wrote: > It does sound though like you're aiming at a specified size and if so > then you'll need to hold the bitrate constant and vary the quality. > Vbr works the other way - holds the quality constant but varies the > bitrate ;)
Obviously, CBR mode doesn't hold the instantaneous bitrate constant, by making every frame exactly the same size. Rather, it holds the bitrate constant over some short interval. Probably a hundred frames as most. When trying to fit something on a DVD or CD, all you care about is that the bitrate is constant over the *entire stream*. You could easily have higher than average bitrate for several thousand frames, followed by a lower than average for several thousand more. ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
