View Full Version : playback on tv question
skubany
1st January 2004, 22:11
Source DV 720x480 video transcoded to 4:3 aspect ratio and the DVD burned using Adobe Encore DVD when played on the computer includes the black lines on top and bottom of the screen as it should (shows the entire video). But when using the home DVD player the displayed video on the TV is cut filling the entire screen. Setting the DVD player to pan&scan 4:3, 4:3 letterbox, 16:9 changes nothing.
What can I do to make the video be displayed correctly on the TV?
I went on-line to read on this issue looked through these forums and the ones one adobe.com, some did touch one the subject but none offered a solution.
Kedirekin
1st January 2004, 23:02
I think you're seeing the effects of TV overscan. The borders are still there and being played back, but they're in the TV's overscan area so you can't see them.
You shouldn't think of this as displaying incorrectly on the TV. This is just part of how TVs work. And there really isn't a solution.
That said, I believe the "solution" of professionals is to frame their shots in such a way that all critical action in a shot happens in the center 2/3rds of the screen.
skubany
3rd January 2004, 00:34
Thanks for the information :)
I did a search for overscan on these forums and there is a lot of information. I read about fitCD and downloaded it. I might try resizing and adding borders. Is there image quality degradation when resising videos? Any quality difference in resizing .m2v (compressed) files compared to resizing .avi (uncompressed) files?
Kedirekin
3rd January 2004, 16:45
I don't know if I'd call it image degradation, but resizing can have effects on the image, outside the change of resolution. I assume you're not talking about decreased resolution when you say image degradation - that's a little to obvious.
There are different algorythms for resizing, and the different algorythms each have their own effects.
For example, bilinear resize often produces a smoothing effect. Many people feel that it smooths the video too much.
Bicubic on the other hand can have either a smoothing effect or a sharpening effect depending on what settings you use.
Resizing effects should be the same regardless of your source - m2v or avi. In most cases, you have to turn your m2v into a virtual avi in order to resize it in any case.
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