Color problems in premiere pro

M

Mino

Northern Dreamer
I am getting frustrated with this problem. I am shooting 24p and editing the footage in premiere pro 2. Everything looks good until the color red or blue enters the frame. In the rendered footage, red and blue are sort of dancing side to side. It happens with green too sometimes. I'm noticing that it seems to be the most pure forms of R G and B that produce this problem. I tried shooting in 24pa mode but the same thing happens. I usually shoot 24p and edit in premiere 6 on a 29.976 timeline with no issues. Now I'm trying to take advantage of true 24p and it's setting my hair on fire with the color dancing thing. I know I must be doing something wrong, but I'm fresh out of ideas. Anyone?

Thanks
 
Can u post some footage or atleast a frame Grab of the issue. Perhaps it is chromatic abberation where your colors are 2 hot (obvoe legal limits) THis caused issues on dv becasue of the 4:1:1 color space. Its like thr saying never twice the same color N.T.S.C
 
Thanks

Here is a wmv file 4 megs or so. I would post a QT but the problem goes away once it's compressed in quicktime. Anyway If you run this clip full screen you'll see a few dancing colors in the reds

LINK
 
thats nasty...hmmm....i've never seen that issue. Try the adobe.com forums see if anyone else has had this hapen
 
how are you capturing? it looks like you're using a laptop...not that there's anything wrong with that, but are you capturing off the tape or live from the camera? granted it looks like the latter, just want to be sure.
 
I am using a laptop yes and have captured both from tape and live from cam, the problem is there either way.
 
Hmm... I've watched your sample four times, even full screen, and I don't see a problem at all. Could it be that the problem is with the display codec you're using? Do you see the problem is you play it back from a DVD?

Fwiw, I playing your WMV file on a system that does not have Premiere installed on it. According to WMP, it's using the Windows Media Video 9 codec. It could be picking up a different codec on your system.

-Dan
 
Same here, the only changes I see seem to be associated more with the compression [blockiness etc], but the colors aren't shifting.
 
I dont notice it either. Could be becasue of hte compression. Can you notice it on a single frame. if so pplease post a full quality tif or bmp grab. Alos let us know if you have the prblem when you burn it to dvd and play it on a standalone dvd player on a television as teledan suggested
 
http://www.dvxuser.com/V6/showthread.php?t=58930

is this the same thing? because i'm noticing the same thing right now. last night i watched your clip on my home PC with an LCD and it was quite wild. right now i'm looking at it on a CRT and it's noisy but more shadowy instead of the pixelization. so it's easy to see you are looking at the footage on an LCD :) read the above thread...could be the same thing, maybe not. one thing though are laptops fast enough for capturing/editing...the hard drive recommendation is 7200rpm and the average notebook/laptop hard drive is 5400?
 
novelt,
I don't see the problem on a 20" LCD flat panel so I don't think it's purely an LCD/CRT thing. But you do bring up a good point. I wasn't thinking in terms of video hardware or drivers. So we might compare configs and see if there's something in common.

I'm currently using a 20" flat panel connected to a 2.66 Ghz Pentium 4 with the integrated Intel 82865G graphics adapter. The monitor is connected to the analog video port. I see nothing abnormal with the video clip using WMP 10.

When I get back to my office I'll try a different setup.

-Dan
 
The monitor is connected to the analog video port.
Click to expand...

that might be why...what do you mean by analog port? plus my real point was i believe most NLEs recommend 7200 rpm drives...what laptop has a 7200rpm? the norm is 5400...but even on a CRT or your setup you don't see the shadowy noise dancing all over the place?
 
Yep it's a 5400 rpm drive, maybe that is the problem...It's also a factory partitioned 80gb, so 35 gb on each partition. It also is setup using Fat32 file system not NTFS. So maybe the poor little thing is just not put on earth to edit video? It plays video files with no problems wether they be DVD, Mov, Divx or wmv...No performance issues at all. The color issue is a tough one to display for you as it mostly goes away when I compress for web. You can see a tiny bit in the clip I posted in the bottom left on the red tea box thingy. This happens when the file is played on any LCD I have not tried CRT but there seems to be no issue when It's pumped through my Matrox preview out on a 27" flatscreen toshiba TV. I also tried using Vegas on the laptop and though the problem is still present, you have to really look hard to find it and by lowering the color saturation it goes away altogether.
 
Since I loaded Vegas on the laptop, the footage coming out of premiere pro is good! No Dancing colors anymore so maybe it was some sort of codec issue?
 
novelt said:
that might be why...what do you mean by analog port? plus my real point was i believe most NLEs recommend 7200 rpm drives...what laptop has a 7200rpm? the norm is 5400...but even on a CRT or your setup you don't see the shadowy noise dancing all over the place?
Click to expand...


The 15-pin d-sub VGA video port provides an analog RGB signal. That versus a digital DVI port. The system I was on at the time only had a VGA port even though it had a flat-panel monitor connected to it.

Once I got back to my office, I looked at the clip on a flat-panel connected to digital DVI port and also my laptop. I could see the problem in both of those.

Now that I can see the problem, I would say that it's video noise that's being exaggerated by the artifacting of the compressor as has already been suggested. I also wonder if the WMV encoder doesn't understand 24p very well. I've used the WMV encoder to uprez 30P footage from my DVX to 720P HD and gotten amazing results. But in this case, if you look at the detail on the microwave control panel, the detail jumps around almost in a rhythm.

-Dan
 
Here's a larger clip in dv avi format not web compressed. It's short but you should see the problem here

 LINK

Thanks to all for helping out here!
 
Mino,
I assume you're using a DVX(?) Just out of curiosity, what gamma setting and color matrix were you using?
-Dan
 
maybe vegas reinstalled directx...sometimes after use directx gets "corrupted" and either needs to be reinstalled or updated. if vegas installed directx then that might've been it...plus a rewrite of your existing codecs.
 
TeleDan said:
Mino,
I assume you're using a DVX(?) Just out of curiosity, what gamma setting and color matrix were you using?
-Dan
Click to expand...

I had just reset my dvx100 back to factory settings to test out my new rostronic lights. I got varied lighting results but noticed way more saturation on that shot probably trying to compensate for the outside lighting beyond the window. the full series of shots can be seen here

LINK

All the reds were dancing in all shots though
 
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