Jerky playback of SD AVI with CS4

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davdav

Active member
Help please, I have been search for a solution all night and it seems that I am not the only one experiencing this problem.

I have a "super fast" computer i7 running at 3.5GHz and 12G RAM. I have two 1TB drives set up as striped RAID and I have less than 1GB of data on it. My video card is the NVidia GeForce 9600GT with 512MB. I also have CS4.1 Premiere Pro.

I built this system to edit AVCHD files natively, but now I need to edit some old DV footage from my SD camera. The footage is good and plays back perfectly in Microsoft Media Player and VLC however...

PROBLEM:
When I play the footage back on the timeline in CS4, it plays back jerky. Any movement is a jerky movement. Audio plays back fine.

I have checked my project settings and they are the same as the clip, ie no rendering is required.

One other thing I tried was to export the clip from Premiere as an AVI file and then reimport it. It took no time at all to export; I suspect because it was simply copying the file - however once imported I had the same problem.

Please help as I am trying to put together my wedding video for my wife. We were married 3 years ago and I really want to surprise her.

Cheers,
Davdav
 
when it needs rendering, the timeline will show a red line above the clip, it might be something you overlooked in the settings.

do you have a sample of the file?
 
Thanks for your reply.

The clip does not need rendering - no red lines, etc above it. I have checked the presets and they are all correct. The file is tool large to upload, however I have used GSpot and PM you it if you like. Basically it says that the file is DV AVI Type 2 and that my computer has a codec correctly installed for it.

Also when I use Encore CS4, the file plays jerky-FREE, ie perfectly.

Any other ideas?
 
12GB. Note that th file plays perfectly in Windows Media player, VLC and Encore. It seems that CS4.1 Premiere uses its own codec. You can see this under the preferences where only "Adobe Player" is an option avaialable.
 
if it was a small file i would have edited for you, but 12GB is a bit out of my bandwidth.

it might be a codec problem where windows media player is using a vfw codec and premiere doesn't like it, installing a codec pack might solve the problem, also using "virtualdub" if it played back normally, you can export to anything if you want to use cs4, so you would not have to install a codec pack, but u will have a small learning curve if you havn't used virtualdub before.

i would recommend either google for the codec missing and type in cs4, or just download something like k-lite codec pack, then change the video settings(i think it's ffd show video settings) to use (i think it's libracodec)
 
I understand only part of what you suggest. Would you mind helping me out a little more please, by elaborating.

(1) GSpot states that I have the correct codec installed for the file (which is DV AVI type 2). Do you have an email I can send the screenshot to you on?

(2) Are you aware of how to install a 3rd party player which Premiere CS4.1 can use, rather than the default "Adobe Player"? This would solve my problem, and I sure of it.

(3) Not sure how you suggest I use VirtualDub. Are you suggesting that I dub the footage into a different format?

(4) YOu last paragraph is confusing as I don't believe there is a missing codec. The CS4 specifications state that it works with DV-AVI types 1 and 2. I read else where that type 2 is the preferred type.

HELP?? But thanks for you replies!
 
there are more than one codec that will play the file format, so you might find windows media player using something different than adobe premiere. you can install a codec pack that will both work with windows media player and adobe premiere like "k-lite codec pack", that will install a bunch of codecs on your system, then assign what codecs to use for what file format that's the ffd show video settings, it should work in premiere cs4.

or you can google " DV AVI Type 2 cs4", find someone else's post and the codec used to solve the problem.
 
I have made some progress... but still need your help.

I have an HMC150 and I converted the files to SD AVI type 2 and also DVCPROHD to test. I found the following:

(1) SD AVI files (PAL at 50 Hz) have a timebase of 25fps although it should be 50i. Same Jerky problem as before. Same problem with DVCPROHD running at 25fps which should be running at 50i.

However....

(2) DVCPROHD at 50p (720) works perfectly!!

Therefore my question is why does Premiere Pro CS4.1 have a preset for DV-AVI (PAL) with a timebase of 25p instead of 50i?

Any ideas??
 
50i it a 25 timebase, it should take the 50i go to 25p and deinterlace to make the footage playback smoothly, that's what you should have been doing 25p deinterlace(choose the field).
 
Can you explain further what you meant by " then assign what codecs to use for what file format that's the ffd show video settings"? How do I do this?
 
I downloaded the codec... unfortunately it didn't help. This is getting frustrating, but I appreciate your help!
 
i'm not on my pc right now, you can go to ur program, start>program files>k-lite codec>ffv video settings, a window will open, then you right click any codec, and choose apply all to libracodec, then save and close, that should make it work. might be a bit different but you get the general point.
 
After almost a month of trying everything I think I have finally narrowed my jerky playback in Premiere issue down.

It seems that the problem only occurs when I stretch the Premiere Pro application across my two 19" monitors. It doesn't matter how big, or how small, the playback screen is, the resulting playback is extremely jerky.

Considering that I would like to have the Premiere Pro application spread across two monitors (I am really used to this configuration), the obvious answer to this would be to purchase a second video card instead of the single Gigabyte GeForce 9600 GT (512MB RAM) which is currently driving both displays. However that would be an expensive experiment and I understood that for video editing this card would be much more than adequate. After all I used to perform SD video editing on my old PC with Premiere v6.0 and a single Matrox G400 dual head card (16MB RAM) back in 2000, and the new video card is worlds apart in speed and performance.

Your suggestions would be greatly appreciated on this matter? I feel close to resolving this. Maybe there is a driver or update or something to get Premiere working across the two screens as well as it used to back 8 years ago.

Thanks in advance.
 
Problem solved!

Nvidia have recently released a new driver for their video cards running on Windows 7 (64 bit). I installed the new drivers and everything now works perfectly.
 
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