Whites burned out...

Maverick wrote on 10/8/2012, 10:36 AM
To be honest I'm not sure the title really explains my problem so I'll try to elaborate:

I have some JPEGs (10MP) taken from a Canon 400D of the sea splashing against the shore so there is a lot of white spray. The JPEGS look good in W7 Photo Viewer and also when viewed in PhotoPlus X5 - the spray is clearly defined.

They also look just as good when added to the time line in V12.

All I've added is a transition between each JPEG as well as some Pan/Crop movement. All events have resampling turned off. I then render to Sony AVCHD 1920x1080 50p with Project video Rendering set to Best all other properties are left as is. When viewed on the same monitor the whites are 'burned out'. Almost just like one big blob of white mess :(

As another test I rendered to MainConcept HDV 720-25p with Project Render set to Best and video quality set to high with 2-pass variable bit rate with the same result.

How can I resolve this issue.

Cheers.

Comments

john_dennis wrote on 10/8/2012, 10:40 AM
Have you considered applying a levels change such as cRGB to sRGB?
Maverick wrote on 10/8/2012, 10:54 AM
Ahhhh, now... there's a thing...

I have no idea what you just said :)

Is there a good tutorial or someone who's ready to hold my hand through this?

All my previous editing has been straight forward SD stuff to PAL DVD on CRT TVs.

I find HD exciting and fun but I have a lot to get to grips with to make my projects appear more 'professional'.

Cheers.

Edit: Curious to know why they would look OK before rendering.

Also noticed that most of my rendered stuff looks burned out in some way. Maybe it's my monitor set up but that doesn't explain why the JPGs look OK in PhotoPlus, etc.

Is it worth posting a short clip so that those with 'much' more knowledge than me can see what is going on?
OldJack wrote on 10/8/2012, 11:15 AM
He said try the "Levels" video effects (on the Video FX tab) and from there select the "cRGB" computer Red Green Blue" and/or the "sRGB" studio Red Green Blue option. Drag it to your clip.
musicvid10 wrote on 10/8/2012, 11:38 AM
Explanation:

-- Your jpegs are RGB 0-255
-- Your avchd output is YUV 16-235

Applying he Levels filter to your jpegs corrects this.
No need to know the theory behind it to use it.
Maverick wrote on 10/8/2012, 1:31 PM
Thanks.

Had a play with it and it seems to make it a little better.

I've now connected the PC to the 40" Plasma, played the files through VLC Player and made the following observations.

The rendered file the Level adjustment definitely looked better but I think I need a bit more tweaking.

I noticed, though, that rendered video from my Sony PJ260VE was not so 'burned out' as the JPEGs. I then played the original footage and felt that that was a little brighter than it should be so maybe I need to adjust a setting in the camera - white balance?

It seems, though, tht all future editing will need the use of the Levels FX. Is this normal or is there something else I can do with both the video footage and JPEGS before bringing them into Vegas?
musicvid10 wrote on 10/8/2012, 2:00 PM
"A bit more tweaking" is accomplished by setting the levels manually, using the Historgram video scope, that's with project properties set to match media settings, and preview at Best/Full. The acceptable luminance range is 16-235 for YUV output..

Can't advise on subjective considerations for your TV, and best of luck.
john_dennis wrote on 10/8/2012, 2:02 PM
"...video from my Sony PJ260VE was not so 'burned out' as the JPEGs."

The question to ask: Does that camera record 0 to 255 or 16 to 235, or some combination of the two? If the video from the camera is already "legal" you should not apply the levels adjustment again.

Some past discussion of broadcast levels...

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=796396

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=804364