pixelation around red edges

Endless_Static_Sea

Endless_Static_Sea

Active member
sorry, didn't have any luck with search.

is this normal, or is there a setting in FCP that is causing this?

red_pixelation.jpg


this was shot in 24pA mode.

thanks
 
did the interlacing or pixellation move along with the image? Is the image free of artifacts when the guy does not move?
 
no, it still is pixelated. you can notice this at the bottom right of the podium. it is still pixelated. the camera was stationary, so the podium was also stationary.
 
huh...dunno then. The reason I asked was because I had interlacing issues in vegas that looked remarkably like that, but that appears not to be what you have..mine was triggered by motion and was a pulldown issue.
 
Red is a tough color. It's better with DVCPRO HD than mini dv, but still a tough color. I don't know FCP, but I am pretty sure there is a setting you can use to kinda' blur the edges, or soften up the red's a bit.

If you are just outputting to DVD, you will probably never see it on the final DVD anyways, so don't sweat it too much if that's the case. Burn a quick test dvd, and see what you see...

Jason
 
the thing is, I exported a quicktime H.264 and it was still pixelated. Don't know if that will carryout to dvd, but that is the final output of this project, so if it disappears, that would be great. thanks
 
apply a 1 pixel chroma blur, and next time, rent a p2 card and shoot DVCpro50 or DVCproHD. ( actually mind as well shoot 720p24pn cause not only is it higher res, but you get more record time than anythign else.
 
I did a shoot with my HVX in MiniDV mode and I got the same thing with red stage lights. It's not QT cuz I saw the same thing in Avid Express. I'm guessing it's just how the camera captures those colors. I had an old Pansonic DVC200 that was even worse with blue lights.

Strangely, though, if you switch over to shoot in 30p or to DVCPRO50/HD, it goes away!
 
Endless_Static_Sea said:
I have two 4GB cards, and 720pN is what I usually shoot, but I down rezzed to 480i to match the two other dvx's I was shooting with.
Click to expand...


Thats why..... you bumped it down to dv. the Dv codec 4:1:1 is the culprit. Always bump SD up to HD edit there, then make your final output from the HD timeline, to Mpeg for DVD. it will end up cleaner.
 
Nah, Nah nah nah nah......


I had a a DVX100, and shot against a red background in low light without even CLOSE to that kind of aliasing.

You sir, have a either an export problem, or your software, somewhere along the line is de-interlacing the footage even though it's progressive.

I've seen images like the one you're showing us right now before, and they ALL came from sorrenson squeeze and Boris Red 3.5.

What do they have in common?: Sorrensen sQ deinterlaced ALL footage by default and they never fixed their auto function. It ALWAYS deinterlaced. Boris Red, implemented in some NLEs (clough AVID) in avx 1.5 cannot handle progressive footage and linedoubles EVERYTHING for compositing purposes.

My friend, that's your problem. I don't know your NLE, or what, but if you want some help PM me, I've had the exact same problem many times.
 
Yeah I agree. Thats gotta be an import problem. Or a setting in your project preferences. Ive also shot against a red background in DV before, and it wasnt as exaggerated as your footage.
 
This is some sort of playback/codec error. It plagued me for ages ...

I get this problem when playing from the P2 viewer - but if I output from the component 720p straight from camera to 720p Hidef projector - it's super smooth with no jaggies.
 
You might want to doublecheck your settings before shooting. You're obviouisly pushing the red channel as the kid's shirt is supposed to be black but is dark pink and the officers uniform which should be khaki is also pink. Note, just looked at the footage again and it's obvious something is wrong with your setup. What is your flow?
 
I finally exported my project to dvd and it played very clean, with zero pixelation. Not sure why it shows it being pixelated during editing and with quicktime export (H.264).

my flow was very simple: I shot on an HVX200, a DVX100a, and a DVX100b, all in 24pA. I captured them in FCP using Remove 2:3:3:2 Pulldown. I edited the footage as normal and did all exporting as normal also (export using quicktime conversion). I used Compressor to export to DVD.

Although the DVD will be ok, I am still wondering why the other stuff is pixelated.
 
Last edited:
TimurCivan said:
Thats why..... you bumped it down to dv. the Dv codec 4:1:1 is the culprit. Always bump SD up to HD edit there, then make your final output from the HD timeline, to Mpeg for DVD. it will end up cleaner.
Click to expand...

...and that would fix the problem with my other two dvx's, that are stuck in SD?

I don't need help with what P2 cards I should have used, or what color sampling each camera has, or how to down rez my footage; I'm well aware of what equipment would have done the job. The thing is, this was being shot with two other dvx's, and it didn't matter what I did with the HVX, the two DVX's would still have problems (being that they only shoot SD, as you know). I would appreciate advice on fixing my current problem, not telling me "should have, would have, could have's".

(Sorry to come off as aggressive, it's just that both posts were not helpful. They were not providing solutions to my current dilema, only telling me things that I already know, and would have done if I had the money to do so. Its like someone asking about a 35mm lense adapter and replying "Well, what I would do is just go out and rent a Panavision set-up. That would solve your 'film-look' problem, now wouldn't it?.")
 
The reason people are being agressive in your eyes, although I personally didn't read any "agressive" posts in this thread is becasue this question has been asked a thousand times, on this board, on other boards etc. The issue is indeed the DV codec itself. It doesn't matter what camera it was shot on, it matters about the colors themselves. Rich colors and the DV codec do not play well together. Try this as a test. Since you are using final cut pro go back to your 720p footage (which still may have a bit of this issue) and export to both the quicktime DV codec and the quicktime animation codec, both in SD. See which one looks better.
Now the reason you may not have seen the same thing in footage shot with your DVX is becasue the color saturation may have been less, depending on the angle the footage was shot at, what was in the frame and camera settings.
This issue has been discussed at nauseum, and the advice that timur gave you is sound, especailly about the chroma blur that will get rid of that right away, something that may also have been used when exporting to H.264.
 
I've gotten that blocky, pixelated look with some footage I shot of a band at a nightclub. I think that part of the problem is the automatic gamma correction that FCP throws on all footage to make it approximate a television monitor. I started a thread a couple of weeks ago about how FCP and Avid interpret MXF's and Quicktimes in totally different ways.

The true test, of course, is to play your footage on a professional HD monitor.
 
if you go to adam-powell.com, and look at his most recent music video (Down I Go), the whole video looks clean as hell. Yet, at the very end of the video, there is this guy in a costume, under all this red light, and it is hella pixelated.

The thing is, he shot it in DVCPro HD, so I don't understand why that would still have pixelation if it was shot in HD with 4:2:2 color sampling?

check out the video @ adam-powell.com
 
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