What is the resolution/frame rate of all clips?
Where did the 8 bit RGB AVI come from?
I have never had any problems playing back any clips on my system and have tried several uncompressed formats. However i was just thinking about an aspect to this yesterday. It really bothers me that premiere does the audio conforming, it really needs to go away! our computers are so fast these days that converting audio bitrate on the fly must use VERY LITTLE cpu.
If i have a 170MB/sec uncompressed clip on my raid premiere is going to conform the audio and write it to the same drive (because that is where i wanted it) however that means when you play back the clip it must read BOTH files at the same time! it is reading the full 170MB/sec file and it is constantly interupted by having to read the conformed audio at the same time which will significantly slow down the speed compared to a single stream reading benchmark. I could see how this could cause problems with users reading multiple files at once, 3 or 4 clips could be accessing 6 or 8 files at once from your drives.
Adobe please flush your conformed audio crap down the drain where it belongs!
because that is where i wanted it
Your point is why separating Media and Scratch is the recommended practice, so that the files are read from two different drives.
The ideal minimum setup is:
C: Windows and Programs
Having said that, much of the conforming you see being done is actually just the creation of the .pek files, which are used to display the audio waveform. They're very small and will not tax even a single modern drive. The .cfa files are the bigger ones, and PP doesn't normally create those for standard audio streams (16 bit, 48 kHz, PCM).
This is all very interesting. Of course, playing back external conformed audio files could mess things up, and it's not even much to do with disk bandwidth - if you're trying to stream 2K DPX or something like that, the mere fact of seeking off to find some other file would be a problem, regardless of how big that other file is.
But that doesn't change the core issue. None of these audio or peak file issues would apply to DPX, and the DPX performance is just awful. It also doesn't explain why some filetypes play back OK, whereas others, which should be less demanding, fail horribly. It doesn't explain the weird failure mode, where you get the first five or ten frames of the clip fluidly, then nothing else at all until the next clip.
So again, Adobe, please, why is the performance so bad?