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Playback problem – Has anyone experiences the same problem?
Hi,
First of all, here are my specs :
Asus P5WDG2-WS (Intel 975X Chipset)
4 GB DDR2 RAM
Pentium D 3.2 GHz
Adaptec 1420SA raidcard with 4 drives in RAID 0 (stripe size 64K)
Decklink Pro card (SD)
Windows XP SP2, DirectX9.0c, Quicktime 7.04, BMD drivers 5.5
Premiere Pro 2.0This motherboard has two PCI-X connectors. I’m using both, for the Decklink card and for the Adaptec Raid card.
My problem : In premiere when I scrub the timeline I feel a delay before the frames are updated. Furthermore, when I play in premiere, sometimes the playback stops (I guess because it drops a frame) Output to a tape has a big 4 frame offset and I don’t think it’s reliable.
This problem started appearing after I changed my computer setup. Previously I was only using 2 Sata drives in Raid 0 on the motherboard’s Intel RAID controller. Everything was running OK. I bought the Adaptec RAID card because I want to use 4 drives as required by BlackMagic. This particular model is approved by BMD.
I installed the card, build an array of 4 drives, and tested it’s speed with the BMD tool. The results are good for SD : 160MB read, 130Mb write. But in Premiere playback is sluggish as I mentioned.
I did quite a few tests, following the decklink support pages suggestions with no succes. Then I opened a BlackMagic AVI file residing on the Video drive (the raid array) with Windows Media player. The playback was VERY stuttery. I copied this file on my system drive, and opened it again in windows media player. In that case playback was fine. I then opened the file on the Video drive with Quicktime and Classic Media player. Playback was fine again. I then opened the file in the BMD deck control tool. Playback fine too. Strange, isn’t it ?
I continued these kind of tests in Premiere : I duplicated the AVI file from the Video disk to the system disk. I imported these two identical files in PPro, in a fresh project using a BMD preset. When I scrub over the file from the system disk, everything is ok. When I scrub over the file residing on the RAID array, it’s sluggish. If import a BMD quicktime file residing on my video array, scrubbing is also ok (eventhough it needs rendering).
I’ve just reinstalled windows, all the drivers and applications and I still face the same problem. Argh…
Can someone help me out here ? Or point me in the right direction ?
Of course I’m starting a big project tomorrow…
Thanks.
Donat
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1 Reply
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I suspect the decklink and raid card are fighting for the same irq or resources. The Decklink pro sd is just a 32bit/66mhz card isn’t it? Try moving it to a 32 bit pci slot and see if that solves it.
My guess, and only that.
Shane
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