MPEG-2 Frame sizes
by Rich Rubasch
on
May 21, 2008 at 1:53:23 am
So I know that MPEG-2 can be encoded to large HD sizes, but what would be compatible 4:3 MPEG-2 sizes that would be "legal" for playback? I have a projector that can display 1420 x 1060. What device might I use to playback this size 4:3 MPEG-2 file?
Re: MPEG-2 Frame sizes by Michael Palmer on May 21, 2008 at 2:14:05 am
So I know that MPEG-2 can be encoded to large HD sizes, but what would be compatible 4:3 MPEG-2 sizes that would be "legal" for playback? I have a projector that can display 1420 x 1060. What device might I use to playback this size 4:3 MPEG-2 file?
MPEG-2 can be anything you want it to be, I'm not sure by what you mean "legal" ?
Standard def 4:3 in NTSC is 720x486, there are a few HD standards like 720p (1280x720) and 1080i/p (1920x1080) and there are tons of in between sizes that can fit the 16:9 format.
What are you asking?
Re: MPEG-2 Frame sizes by Rich Rubasch on May 22, 2008 at 1:37:04 am
Turns out that MPEG-2 can be encoded to 1280 x 1024 (a standard SXVGA 5:4 resolution, and 1280 x 960, a standard 4:3 resolution. Most projectors and monitors can display these resolutions.
Video playback appliances playback MPEG-2 in these and other resolutions. I know that MPEG-2 can be encoded in many different frame sizes, but I was looking for resolutions larger than 720 x 480, but not necessarily HD....more in the 4:3 legal projector/display resolutions.
Re: MPEG-2 Frame sizes by Thomas Leong on May 22, 2008 at 6:58:35 pm
It is best to feed the projector its Native Resolution. This is the resolution that every projector handles best. Any thing else and the projector will resize the source to its native resolution, automatically, on the fly, and there may be some performance degradation since scaling is not the projector's forte. So look up the projector specs, and encode your source to its native res.
