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View Full Version : When to use RGB or YUY2 when encoding with CCE

1loser
16th June 2002, 01:33
I convert from avi to SVCD with CCE-SP but first I create a small avi sample and use DVD2SVCD to go through the entire encoding process. This way I'm able to check for potential problems like aspect ratio. It seems DVD2SVCD always creates an avs file with "ConvertToYUY2()" and at first I was including that when I encode with CCE. I have no idea why it's included and I would like to know when I should be using it. There was one time when the file didn't play back proper because I didn't include "ConvertToYUY2()". Also that particular time the file size was aout 1/4 the normal size.

I did a search like I'm suppose to and sorry if the answer is easily found but I didn't find it. I would appreciate a very simple answer because I don't have any background knowledge about this subject.

Thanks in advance
wmansir
17th June 2002, 15:57
ConvertToYUY2 is used to make sure the video is in the right color space since some avisynth functions only work on YUY2 video. If the video is already YUY2, nothing is done, so it doesn't hurt to always have it in the script before using a YUY2 only filter.

However, you shouldn't have to use ConvertToYUY2 if your ripping a dvd since it is already YUY2. I haven't used DVD2SVCD much, so I don't know how it uses ConvertToYUY2.
1loser
17th June 2002, 18:10
Originally posted by wmansir
ConvertToYUY2 is used to make sure the video is in the right color space since some avisynth functions only work on YUY2 video. If the video is already YUY2, nothing is done, so it doesn't hurt to always have it in the script before using a YUY2 only filter.

However, you shouldn't have to use ConvertToYUY2 if your ripping a dvd since it is already YUY2. I haven't used DVD2SVCD much, so I don't know how it uses ConvertToYUY2.
Thx for the info, in my case I'm always converting from DivX to SVCD so I guess I should ALWAYS use "ConvertToYUY2".

I would like to know more about RGB verse YUY2, if anyone can direct me to some articles that explain the differences or even give me a short explanation here.