Ok I have the same problem
Powerbook 1,5ghz 512 ram / clips on internal harddrive.
The bug :
The rendered video clip (fonction --> render logical record) stutters. By checking the rendered video file frame by frame i realized that some frames are rendered twice. It happens every 3 to 15 frames. To give a better idea, if each letter is a different frame this is what the video could look like :
A B C D D E F G H I J K L L M N O P Q R S T T U V W X X Y Z
Resulting in a stuttering output video.
So I did various test :
- It doesn't seem to have anything to do with codecs (or codec settings)
- Nor with video render size
- I also tried rendering at higher frame rates (egg : 50/s) but I just get 3 identical frames in row when the bug happens instead of 2.
If I render a layer moving with automove the bug doesn't happen. But if this layer contains a clip, the clip will stutter even if the animation of the layer doesn't.
I hope this is clear, any openGL animation will stay smooth. Its only the playback of a video clip in the composition that stutters.
Just for extra info, the bug also happens with airport and bluethooth disapled (you never know
)
Good luck, really hope you could trace down this bug before the next update. This function in modul8 is really unique. But it this state its unusable.