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Images rendered in Vegas not coming out like the preview (Blacks too Dark, some other differences)
I’ve got a problem that’s doing my head in, I’ve drawn and coloured a simple picture to put as an intro to a video, In the preview the image looks fine, it looks how my image should look.
As soon as it’s rendered, it’s changed.. Blacks are too black and blot out my lineart, flesh colour became too bright, I have no idea why and I’m having a hard time trying to get any information other than my ATI card might somehow be screwing with the output render. I’ve tested other output formats, they all came out with the same altered coloured image.
I’m using Sony Vegas Pro 10, Windows XP SP3, ATi Radeon HD 5770. Trying to render to a Sony AVC Mp4 of the same resolution as the image and video, 1280×720.
If required I could post the original .PNG of the image I’m trying to use, and a small render of what it looks like after. Not sure where to upload it to however.
Anyone know what I can do to change this short of tediously editing my image to be brighter or darker in places? I really don’t understand why Vegas is editing the image, especially since it’s fine in the preview.
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5 Replies
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Where are you viewing the rendered video?
Note that black (and white) in a video is not the same as black (and white) in a photo. In a jpg, white is 255-255-255; black is 0-0-0. Broadcast white is 235-235-235; black is 16-16-16.
Sounds like you need to take everything in 0-255 and scale it to be within 16-235. You probably need to use the video FX objects Levels and/or Broadcast Colors.
Good discussions are:
— Colour Correction Sony Vegas
https://forums.creativecow.net/thread/24/939771— Sony “Levels” vs “Broadcast Colors”
https://forums.creativecow.net/thread/24/939445#939446Best.
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I viewed the rendered video with a few media players, MPC-HC and VLC, on my monitor, my plasma, my mother’s laptop. I uploaded a test to youtube too.
I was not aware of the difference in blacks and whites.. I suppose that would explain why it didn’t seem to overly affect other colours.
I’ll take a look at those links, thanks.
It just still kinda boggles me, the picture looks fine in the preview, if it’s going to turn out different after then what’s the point of a preview. :/
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Sorry for double-post, I don’t suppose there’s a levels preset for this kind of thing? I’m pretty new to Vegas and didn’t think it would be this stressful just to put a .PNG into a video..
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I believe that if you “view” on a monitor, white is 255-255-255, black is 0-0-0. If you view on a TV, your limits are 235-235-235 and 16-16-16.
From what I’ve heard, YouTube (and Vimeo) assume that your uploaded video falls in the 16-235 range and will automatically expand to 0-255 (since playback is on a computer monitor). Hence, if you feed YouTube 0-255 material, it anything 0-14 and 236-255 is getting overly crushed. Hence, the over-blacks and over-whites.
In Sony Levels, try using the preset: Computer RGB to Studio RGB. In Broadcast Colors, there’s a checkbox Studio RGB.
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[Morgan Lewis] “It just still kinda boggles me, the picture looks fine in the preview, if it’s going to turn out different after then what’s the point of a preview. :/”
Actually, preview is not to be used for color correcting. It’s more or less to show you what frame you are on and what an effect will look like but only if you preview and the Best setting. using the Preview setting it will approximate. All color decisions should be made on a calibrated secondary monitor (and if your primary monitor is not calibrated that’s bad too). I use the Datacolor Spyder 3 Pro to calibrate my ASUS ProArt PA246Q secondary monitor and my videos always come out looking exactly as I expect them to.
[Morgan Lewis] “I don’t suppose there’s a levels preset for this kind of thing? I’m pretty new to Vegas and didn’t think it would be this stressful just to put a .PNG into a video..”
As Tyson said, any image that you bring into the timeline should have the Sony Levels filter with the Computer RGB to Studio RGB preset applied. This will adjust the computer image to video levels. You can do this at the media or even level, or just place all of the images on their own track and do it at the track level. It’s up to you.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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