Am supposed to play a project tomorrow. I burned using non-square pixel
- but when it was played with an lcd projector the quality really slipped.
If I burn using square pixel will it improve -
I first prepared a video prior to burning using project properties
Any suggestions.
Thanks
Petrea
video quality when projecting thru computer & LCD projec
Moderator: Ken Berry
-
Telgaladhion_Greyskye
file project settings
Here are the properties
It plays well on TV DVD player - problem is using computer & LCD projector where I loose quality
Project properties
NTSC ddrop fram (29.97 fps)
MPEG files
24 bits 720x480.29.97 fps
lower field first
(DVD-NTSC) 4:3
The project contains both JPEG files (interchange format compression JPEG UYV colors
and MPEG video
Thanks for any help you may be able to give
I tried changing the pixel designation but not sure that is the right thing to do. I will be running a test - but have to bring disc to where we will be
running the program - would like to bring some variations to try
Thanks again
Petrea
It plays well on TV DVD player - problem is using computer & LCD projector where I loose quality
Project properties
NTSC ddrop fram (29.97 fps)
MPEG files
24 bits 720x480.29.97 fps
lower field first
(DVD-NTSC) 4:3
The project contains both JPEG files (interchange format compression JPEG UYV colors
and MPEG video
Thanks for any help you may be able to give
I tried changing the pixel designation but not sure that is the right thing to do. I will be running a test - but have to bring disc to where we will be
running the program - would like to bring some variations to try
Thanks again
Petrea
It could be a couple of things...
It may be that the picture isn't really worse, but enlarging it makes the defects more noticable. Even on my old low-resolution big-screen TV, I can see defects that aren't noticable on my computer screen. Use the highest bitrate that allows the project to fit on a DVD.
Or, it could be the translation between your DVD resolution 720x480 and the display resolution. Note that 720x480 doesn't divide evenly into 1280x720 or 1920x1080. Most of your pixels will be scaled-up to 4 pixels, but some will be scaled-up to 2 pixels. If this is the problem, the comercial DVDs would have the same problem. I have no idea if this is a real problem, or a theoretical problem.
(This isn't an issue with analog CRT displays.)
The pixel shape is related to the aspect ratio... a 720x480 4:3 image will have different pixel shape than 720x480 16:9 image.
It may be that the picture isn't really worse, but enlarging it makes the defects more noticable. Even on my old low-resolution big-screen TV, I can see defects that aren't noticable on my computer screen. Use the highest bitrate that allows the project to fit on a DVD.
Or, it could be the translation between your DVD resolution 720x480 and the display resolution. Note that 720x480 doesn't divide evenly into 1280x720 or 1920x1080. Most of your pixels will be scaled-up to 4 pixels, but some will be scaled-up to 2 pixels. If this is the problem, the comercial DVDs would have the same problem. I have no idea if this is a real problem, or a theoretical problem.
(This isn't an issue with analog CRT displays.)The pixel shape is related to the aspect ratio... a 720x480 4:3 image will have different pixel shape than 720x480 16:9 image.