DVX TECH GURU

RomanJaquez

RomanJaquez

Well-known member
DVX TECH GURU…? Please somebody help me.

Since I got my DVX I have not been able to get a good image ever… always I have to trouble shoot. Can someone please tell me how to fix this problem with the RED and the FIELDS?

Settings: F1, Auto no furthur change

Captured: in FCP HD; 29.97 timeline

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I am starting to question my skills and DVX's capabilities
 
Re: DVX TECH GURU

I am no GURU (for that you will have to wait for Barry's reply), but one thing is obvious:

The fields are there because you shot in 60i. Turn your scene file to F5 (24P) or F6 (24P advanced).

The reds - you probably have not change color balance preset, so it's still set to 'daylight (5.6K). If you don't want to do manual WB, make sure your WB switch is set to PRST, then press the WB button which will show you the current setting. If you press it again within (I think) 3 seconds, it will switch to 3.2K which is tungsten balanced, and the picture should be less reddish. Since this appears to be a night shot, you probably don't want to do manual WB anyway - 3.2K should be fine in most situations.

Good luck!
 
Re: DVX TECH GURU

Thanks such quick response Jerry,
I am not sure if I understood you properly "The fields are there because you shot in 60i. Turn your scene file to F5 (24P) or F6 (24P advanced)."

Do you mean I should turn to either of this scene files to capture the 60i footage?

Is there anything I can do in post to fix the PIXELS around the reds? They are all over the film where there is red.
 
Re: DVX TECH GURU

I am aware that some of you have encountered this problem... how did you solved it?

When shooting 60i, how can "we" the camera operator avoid the field’s problem?

Any FCU user here that can help with program settings for capturing and exporting the picture? or what about PremierPro

I am in need of a hero right now :P
 
Re: DVX TECH GURU

these are two other samples

here you can see it in the reds again
more.cgi


here it speaks for it self
more.cgi


Guys! I am a loyal DVX fan... and boy am I obsess with it… but I do not get the same issues with of other cameras like the DCR-VX2100…. Why is this?

I am almost sure that I did color balanced the cam prior to shoot.
 
Re: DVX TECH GURU

Hmmm...

that's interesting. I can only see the last two grabs. The slick looking guy definitely has the combing pattern that one would normally expect when there is a camera pan in 60i. If you were not panning, it could be because of horizontal camera shake. As far as I know, there is no way to get rid of it in interlace mode other than 'deinterlacing' in post. That's why I suggested turning the scene settings to F5 or F6 - that would definitely get rid of the comb pattern. However, it looks like you are not looking for a film look, so you can do 30P (I don't remember which of the scene files use that - you should try yourself).

The other shot of the drinking lady (and everything else) doesn't have the comb pattern - which should be expected with a steady shot where there is not much action.

The red pixels you are talking about (I assume they are in some grabs I cannot see) would most likely be due to miniDV compression (4:1:1). The red and blue pixels are sampled only once every four luminance samples. If you have bright reds, you will see some smearing because of that. I don't know all the technical terms to describe it, but I DO know that bright reds are always a problem.

Hope that a GURU will appear and explain everything...

Jerry
 
Re: DVX TECH GURU

Excellent job, Jerry! As far as the red, the problem is partially traceable to you using FCP. FCP's codec does no "chroma smoothing", so on the computer screen it shows the raw blockiness more than other codecs do. You can see comparisons between FCP's codec and Avid's (chroma-smoothing) codec at:
http://24p.com/codecs.htm
 
Re: DVX TECH GURU

Cool! Do you know if there is a similar comparison between Avid and Vegas? I know a lot of film people won't even consider editing on anything other than Avid Express, but Vegas so sooo cool! It took me like a millisecond to get it, vs. Avid Express which I left after hours of frustration.

The problem is - my apprenticeship production company 'wants' me to edit my stuff with Avid. Well - they don't force me, just 'suggest'. I'd like to show them why I prefer Vegas.

P.S. - thanks for the comment. I've got that nice warm feeling of recognition by the guru himself! ;D
 
Re: DVX TECH GURU

i love vegas,i tried all of them, vegas just seemed to come naturally.
 
Re: DVX TECH GURU

Wow! Thanks guys… Jerry you saved the night and became the hero.

I have no access to either Avid of Vegas, but I did capture the same footage on PC with PremierPro and did not have the same problems I had in my MAC. I’d check the software settings for a gazzilion time again up until I find the “right path” between my DVX and FCP.

Thanks again.

PS: any input on FCP?
;D
 
Re: DVX TECH GURU

I know that there is a chroma smoothing plugin out there for FCP. Try a google search and see what you come up with.
 
Re: DVX TECH GURU

I use FC and I like it.

I could get bashed for this and that's fine, but I think that as far as video editing, Mac's are the way to go.
 
Re: DVX TECH GURU

I agree with you... I have been using FCP for quite a while.
But, I do not know what is it that I am not doing right that whatever footage I shoot with my DVX [which by the way are of good quality] it will not allow me to export it without heavy Fields problem.

Perhaps you can give me some tips for DVX workflow with FCP.
 
Re: DVX TECH GURU

hm... yes f1=bad news bears  ;D I hate f1preset! f5 and f6 is where its at! I like to turn detail down to -5 or so and put mped around -6...


[quote author=Thinketernity link=board=Events;num=1100115093;start=15#15 date=11/11/04 at 11:55:21]I use FC and I like it.

I could get bashed for this and that's fine, but I think that as far as video editing, Mac's are the way to go.[/quote]


I have a g5 and fcp.. and I love it.. but I do have alot of quetsions about exporting and compressor...
 
Re: DVX TECH GURU

[quote author=RomanJaquez link=board=Events;num=1100115093;start=15#16 date=11/11/04 at 13:11:54]I agree with you... I have been using FCP for quite a while.
But, I do not know what is it that I am not doing right that whatever footage I shoot with my DVX [which by the way are of good quality] it will not allow me to export it without heavy Fields problem.

Perhaps you can give me some tips for DVX workflow with FCP.[/quote]
when you export a frame grab, you are exporting a slice of 1/30 of a second from your timeline. since this "slice of time" is comprised of two fields (even and odd), they both will show up - hence the combing effect on anything that is moving in the frame.
the way final cut handles this is simple - it exports all information in that frame (two fields) as your grab. this presence of both fields is fine for video in motion, but isn't the best for taking frame grabs :D. what i believe premiere does (it's been a while..) when you export a frame grab though is it automatically only exports one field with the missing scan lines interpolated in order to give you an image with minimal combing. in order to get this image out of final cut pro, just select the clip you want the frame grab out of, click effects>video>de-interlace (i think that's the path anyway...). then export your still frame from the timeline. you essentaially just did what premiere does automatically.
 
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