>It occurs to me that I may not always know
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
Once you know exactly what it is you are editing, you will be able to create a project that matches
So long as the video card's driver is up to date, and it is a fairly current video card, it will have little, if any, effect on the smoothness of playback, or editing.
Now, you are correct about one not knowing the source of some files. That is where the utilities, G-Spot and MediaInfo, both free, and linked in the first article that John T. linked to, can come in handy. Either should work well, but if G-Spot does not give you 100% of the info, then use MediaInfo. I would never have a video editing computer without both of those utilities installed on it.
If you have mixed Source Footage, it is usually best to either convert one type of source footage to the format/CODEC of the other, or just create two separate Projects in PrE, and edit one type in one, and the other type in the other. When done, you can output one type/one Project, to match the other, Import that file, and finish editing.
Edit: I resized this image (orig 1280x800 in the composition frame but when I post it, it gets resized to an unreadably small size.
I know what a CODEC is. However, Project Settings seem to be oriented toward the device that created the video. Bear in mind that the video in question is probably not the source video. It has probably already been rendered down. Downloaded G-Spot and ran the video in question (above). There doesn't seem to be any additional information provided that clicking on the file in Windows 7 doesn't give. Given this information from the screen shot, what Project Setting would you suggest?
Alongside these discussion panes are suggestions for discussions similiar to this one. Below is one conversation from the list of suggestions concerning the exact same choppiness. Bill, you were in the thick of things there as well. Was never resolved. Now that's scary.
As for updated drivers, I just upgraded this machine from XP which exhibited the same choppy video and one of the main reasons for the upgrade to Win7. The video card was sold by ASUS and there are no Win7 drivers for the GeForce 9600 GT based cards on the ASUS site. When I loaded Win7, it provided a driver for the card. Clicking on update drivers in device manager, it says it has the best drivers. So, not sure if this is really considered "updated".
Lastly, no one wants to tell me what video card they are having success with?
- Click the image and it displays in its full glory.
- I use a nvidia 8800GT and it's fine for all things video editing.
- Get the latest driver from nvidia, .
Insanity is hereditary, you get it from your children
I am using an nVidia GeForce 8800M GTX - 512GB VRAM (on my laptop), and am running PrE, PrPro, AE and PS just fine. My card is older, the new laptop will have GeForce 580M with CUDA support for the PrPro CS 5.5. MPE (Mercury Playback Engine).
I do agree with Neale, to go to the nVidia GeForce 9600 GT card, and plug in your version of Win7.