Too Bright (light) after importing and encoding through Sorenson / Flix :(

[P_Cherry]

Hi,

I am converting AVI files through Sorenson or Flix to FLV file. But there is a problem with brightness. Video looks fine in Vegas, but after importing the same file into Sorenson or Flix it becomes much more brighter / light ?

Where should be the problem ? I am converting files, which were grabed from DVD and than edited and converted in Vegas into AVI...

Also, when I don´t find any ******* solution, what should be better to decrease brightness or gamma in Sorenson ?

Thank you very much for any advice
Peter

[Shadowmistress]

It most likely has to do with the output step from "Sorenson or Flix". I'm not familiar with these programs but other encoders have a setting which allows you to specify if your source file is YUV or RGB and which way to output the file. If your final product is coming out too bright you need to set your source as YUV for it to come out properly.

YUV has a colour range of 8-235. This is what tv's display.
RGB has a colour range of 1-255. This is what computer monitors display.
Monitors can display YUV without much perceptive change to the human eye, but tv's can't display the RGB without making the whites look whiter and the blacks look blacker.

Some devices (video cameras or capture cards) record in RGB while others in YUV (some video is intended for tv while other for strictly online viewing). Most encoders will ask you what your source is so that if it is RGB the program can shrink the colour range from 1-255 to 8-235 so a tv can display it. If it's already in YUV it should do nothing.

Considering you're grabbing video off a dvd, I'm guessing it's already in YUV. Since it looks fine in Vegas it's probably staying YUV. Because Sorensen is outputting it brighter, it probably thinks it's importing an RGB range from Vegas instead of a YUV. Find that setting in Sorensen and change it.


For further info try this thread