Streaming Video glitches???

I have a lot of videos in my iTunes library. More than what can fit on my apple TV's HD, so I stream my movies. Sometimes during scenes with fast movements the image plays with a glitchy frame rate. Is it possible that this is a data rate transfer problem? Can it be fixed?

It could be various things. My first guess would be that it's the encoding of the video that's at fault, it may play more smoothly if the content is synced though.
Variable rate encoding means that the type of scene you are talking about causes the encoding process to increase the bitrate for a short time, your tv might be having difficulties pulling that from a buffer while the buffer is still being written. On the other hand the bitrate could simply too high whether the tv is streaming or not.

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