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Step Back/Forward vs Play (Smoothness)

Jul 15, 2012 11:01 AM

After 10 seconds of continuously using 'step forward' or 'step back' in multicam mode I start experiencing some serious video stuttering, however, when i just play (spacebar) the sequence, there is no stuttering.

 

3 avchd tracks, 1 wav track,

no effects on any tracks,

all media on internal 7200rpm HDD at about 50% full capacity

 

CS5.5.2

 

AMD Phenom II X6 1055T

8GB 1600 memory

ATI Radeon HD 5800 series

 

c: OS, Programs, Pagefile - 1TB 7200RPM

d: Previews, Media Cache, Exports - 1TB 7200RPM

e: Media, Projects - 1TB 7200RPM

 

Resource monitor registers a consistent 9MB/sec when playing (spacebar) sequence, but varies wildly from 0-20MB/sec when using 'step forward' or 'step backward'

 

 

 

 

Is this normal? any thoughts?

 

 

 

 

Thanks

 

-wolv

392 Views   3 Replies   Latest reply: Harm Millaard, Jul 15, 2012 1:50 PM
 
Replies
  • Harm Millaard
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    1. Harm Millaard,
    Jul 15, 2012 11:57 AM   in reply to wolverine.ks
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    Is this normal? any thoughts?

     

    With these system specs, yes.

     
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  • wolverine.ks
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    2. wolverine.ks,
    Jul 15, 2012 1:14 PM   in reply to Harm Millaard
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    Thanks Harm,

     

    Do you know the technical difference between playing and stepping forward on a sequence? I'm interested in knowing why one would be so much more hardware intensive than the other.

     

    Thanks.

     

    -wolv

     
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  • Harm Millaard
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    3. Harm Millaard,
    Jul 15, 2012 1:50 PM   in reply to wolverine.ks
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    When stepping forward, each frame has to be decoded without caching, because your next step may well be to step backward or some other action. When playing each GOP can be cached, so it is a lot easier on the system. At least that is what I'm guessing. Your CPU (AMD), memory (only 8 GB) and GPU (AMD) are not very fast, so on a fast system this may not be very noticable, but it will be on your system.

     
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