Can anyone tell me why Vegas does this?

M

MiyaDV

New member
When I import my h.264 files into Vegas timeline, and render them out to lossless formats (I tried RGB and YUV) The luma shifts or something, the image is slightly darker everywhere compared to the original .mov files.
I searched through all the settings in Vegas to try and find something that would stop its, but I couldn't find anything.

I import the original h.264.mov file in AfterEffects and render to the same formats, the image is identical to the source file... (I tried a variety of codecs for both programs, matrox/utvideo/etc)

I'm on latest version of Vegas 64bit.
 
Quicktime files have an odd gamma shift one way or the other, depending on source and where you view it; this is because Apple wanted to pre-correct video playback for certain OS and monitors of their own, or something like that. I'm not totally clear on why. Regardless, it's a long standing issue. Vegas, I assume, doesn't have the latest codec updates that compensate for this. After Effects does. You can compensate by brightening the video, but it sounds like you're on a PC- if this is the issue, Apple users will see it with compensation; meaning it will become washed out. The only option I know works is to get it into AE. I could be wrong, but this sounds just like the issue I've read about pretty often.
 
If you answer a few questions, it might help. I work with Canon 5D H264 files all the time, and don't see that problem that you are having.

Which version of Vegas are you using? I am using 10c
What are your project settings? 32bit Full Range? 32bit Video Levels? 8bit?
Is your project size and frame rate the same as the h264 files that you are importing?
 
Err, yeah I'm on 10c. I usually have my project settings all matching the source footage (from Canon HDSLRs) so 1080p 24fps, 8bit, (I tried 32bit also, and tried disabling re sampling on the clip) it only seems to be doing it on h264.mov files though I tried it with AVI's and jpgs(lol) and they didn't get the shift. It's a very slight shift but noticeable like all the soft shadow areas are darker.

I downloaded CS5.5 premiere trial, and I'm not getting it in there playing around in premiere till I can figure this out cause I don't want to transcode files again I hate doing that lol
 
i have allways noticed a weird shifting on all footage rendered in vegas, regardless of origin and settings, what has worked best to keep it true to source is to render quicktime jpg, and i see lesser defects,
I have allways been a vegas enthusiast, but it has its little things that make me feel not quite satisfied, but i love its work flow and i really dont feel like i can do the things i can accomplish on sony's vegas as fast and easy as other nles do... maybe im just reluctant to try other things, maybe im stubborn, but i dont feel better anywhere else... my advice, try all settings possible and find your gold...
 
MiyaDV said:
When I import my h.264 files into Vegas timeline, and render them out to lossless formats (I tried RGB and YUV) The luma shifts or something, the image is slightly darker everywhere compared to the original .mov files.
I searched through all the settings in Vegas to try and find something that would stop its, but I couldn't find anything.

I import the original h.264.mov file in AfterEffects and render to the same formats, the image is identical to the source file... (I tried a variety of codecs for both programs, matrox/utvideo/etc)

I'm on latest version of Vegas 64bit.
Click to expand...

Hey there, sounds like something I ran into while editing my T3i shots. Im also using Pro 10d. Go into your Project Properties and set your Pixel Format to 32 bit floating point (full range) then change your Compositing Gamma to 2.222 (Video). Then check at the bottom to start all new projects with these settings. Now sometimes I found after I make those changes I need to close Vegas and reopen it after I do that for it to behave properly, but that was with 10c. I hope that helps.
 
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