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FW800 slower than internal HD - can't edit

336 Views 9 Replies Latest reply: Jan 18, 2013 4:36 PM by Isidore Isou RSS
Isidore Isou Calculating status...
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Jan 18, 2013 6:21 AM

Hi,

 

I am trying to edit 1080p proresLT files, located on a 7200rpm 2,5" FW800 external hard drive.

This is a 3 cameras edit, so I got 3 videos playing at the same on my timeline.

It is impossible to play them : after 3 seconds it stops.

But when I copy them on my internal 7200rpm drive, it works smoothly. I can't copy all rushes, to big for my internal drive (160gb of rushes).

 

Why FW800 is so slow ??

 

Thanks for your help.

MacBook Pro, OS X Mountain Lion (10.8.2), 2,2 C2D
  • Michael Grenadier Level 6 Level 6 (19,805 points)
    Currently Being Moderated
    Jan 18, 2013 6:37 AM (in response to Isidore Isou)

    Do you have ANYTHING else connected to any firewire port on the computer.  All mac's have only one firewire bus and all firewire devices drop to the speed of the slowest item on the bus.  Depending on the vintage of your macbookpro, you can get a firewire 800 card which will add a second bus to the computer.  Also, you must have at least 10% free space on all drives.  The fuller the drive gets, the slower it gets. 

     

    And it's possible the drive has a corrupted folder structure.  Run diskutility:  drive repair on it.  And if you've got diskwarrior, run that.  If you don't have it, it definitely a worthwhile purchase.

     

    www.alsoft.com

     

    And test the read/write speeds for the drive.  There are some utilities out there that will do that.  The drive may be dying.

  • Michael Grenadier Level 6 Level 6 (19,805 points)
    Currently Being Moderated
    Jan 18, 2013 6:40 AM (in response to Michael Grenadier)

    And you might want to do some research on exactly how much speed you need to do a 3 angle multiclip of proreslt 1080 material.  You may be asking too much of firewire 800.

  • Gary Scotland Level 5 Level 5 (7,555 points)
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    Jan 18, 2013 10:08 AM (in response to Isidore Isou)

    your problem is the external 2 1/2 disc

     

    buy a proper Firewire drive designed for video editing

  • Shane Ross Level 8 Level 8 (41,655 points)
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    Jan 18, 2013 10:34 AM (in response to Gary Scotland)

    FW800 is too slow for 3 streams of ProRes.  Your internal drive works because it is directly connected via SATA. If you had an eSATA (external SATA) drive, that would work better.  Or even better yet, a RAIDed eSATA drive. But that would only work if you have an Express24 slot on your computer, with eSATA adapter. Unless your MBP has Thunderbolt...then that would work too.

     

    If your laptop only has Firewire 800 as the fastest external connection...then you'll be hard pressed to edit 3 streams of ProRes.

  • Michael Grenadier Level 6 Level 6 (19,805 points)
    Currently Being Moderated
    Jan 18, 2013 11:55 AM (in response to Shane Ross)

    the OP could try mediamanaging to dv anamorphic.  Shane, would the drive handle that for 3 streams?

     

    Are there any resources out there saying what kinda thruput you need per stream for various formats?

  • Shane Ross Level 8 Level 8 (41,655 points)
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    Jan 18, 2013 11:57 AM (in response to Michael Grenadier)

    Sure...offline/online cutting. That'd work. 

  • Studio X Level 7 Level 7 (26,835 points)
    Currently Being Moderated
    Jan 18, 2013 2:47 PM (in response to Isidore Isou)

    Those speeds are pathetic.

     

    A proper FW 800 drive will read/write 70+MB/s and an esata internal (non-system) will read/write north of 100 MB/s.

     

    x

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