Black Levels

[Andy]

JD, you noted that it's fine on the DVD ... so this issue you are seeing with black level shifting only happening during realtime rendering/playback of effects and transitions, or is it also still visible in playback of fully rendered effects and transitions?

[antonsvideo]

it could also be that his TV is set to automatic gain control or similar

I only believe what I see on my waveform monitor, if there is no shift during the transition, then the fault is with the monitoring equipment

also, never trust what you see on a PC preview mon

[jdroadie]

Nah My TV's are older but they are good...remeber they are fine in CS4, I want to give you guys some drop box links what's the best way.....
IF My render mode is set to DV and I export DV I can show you the shift...If I just perview it shifts...might be gamma, seems like blacks both are gamma I guess.....here's hwre it gets better and might explain a little why the DVD is OK...If I don't render and export to HQ then no shift but I think its all shifted...here's the drop box links

https://dl.dropbox.com/u/57722845/test.avi this one is dv codec

https://dl.dropbox.com/u/57722845/test2.avi this one in HQ no prerender is all shifted up.... so when everything is rendered to anopther codec it all shifts up. (or gamma changes if you will)

I also made this in HQ from the pre-rendered DV and the shift occurs as you see in DV

https://dl.dropbox.com/u/57722845/test3.avi

[antonsvideo]

where is the graphics file?

[Andy]

Hey JD,

That first clip (the DV codec) ... isn't that supposed to be a Quicktime movie file (not AVI)? Any possibility you have a small sample of the original Quicktime footage rather than the DV AVI re-encode?

Cheers
Andy

[antonsvideo]

also, the dv file is not quicktime, it is the completed canopus dv file showing the problem

but I need to see how the problem came about, I guess there is something wrong with the graphics file or the quicktime file

once I have these files, I can tell you the problem and how to fix it

[jdroadie]

here's the graphic

https://dl.dropbox.com/u/57722845/dell.psd

I think those files are indicative of the issue already... but how can I split the QT files they are all an hour and change long...If I cut them in Edius and export as same, is there a recompress?

[Ron Evans]

How are you placing the title? I just tried putting your title over your DV file and have no shift at all. I placed you DV file in VA 1 and applied the title in 5V ( my default project, 4 VA tracks and 4 V tracks). I do not use the title track at all. I can fade in and out with no problems. However your whole DV file appears to be with 7.5 setup and it should be at 0 also when the title appears it goes up another 7.5 for some reason.

I am using Edius 6.07. I can do the same thing in CS6 too. In Vegas 11 I get some flickering and similar problem to what you report. Will try and investigate further to see why I can get it to work in Edius 6.07 and CS6 but have same problems you report with Vegas 11 !!!

Ron Evans

[antonsvideo]

here's the graphic

https://dl.dropbox.com/u/57722845/dell.psd

I think those files are indicative of the issue already... but how can I split the QT files they are all an hour and change long...If I cut them in Edius and export as same, is there a recompress?

no problem with your graphic, does not cause any gamma changes, but I don't have a quicktime dv clip

the one you provided is canopus dv

[createmedia]

Shift of black

No I added the graphic as well and no shift seen - ok here.

[Ron Evans]

Have you tried putting the original video files on the timeline and exporting as a HQ fine file then using that HQ file for the title overlays and final export? You should not have a noticeable quality loss.

Ron Evans

[jdroadie]

Yes that's how I worked it out.. I went to the venue last Friday...there was setup enabled in their SDI converter so that supports Ron's finding.....in the end the I exported it all in HQ then laid the graphic..... still puzzles me some....